CN103076507B - Radio frequency module, sampling device, antenna test system and antenna test method - Google Patents
Radio frequency module, sampling device, antenna test system and antenna test method Download PDFInfo
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Abstract
The invention discloses a radio frequency module. The radio frequency module comprises a radio frequency main body and a driver circuit arranged on the radio frequency main body, wherein the driver circuit is provided with a signal input end, a signal output end and at least one parameter receiving end, the signal output end is used as a bypass end and used for connecting the signal input end of a driver circuit of another radio frequency module, the parameter receiving end is connected with a probe, and the probe is used for collecting measurement parameters of an antenna to be measured; and an external control signal is input to the driver circuit from the signal input end, and the driver circuit selectively enables the signal output end or selectively enables one of the at least one parameter receiving end according to the external control signal. The invention also discloses a sampling device, an antenna test system and an antenna test method. Through the scheme, the test efficiency and the test quality are improved during antenna phase test.
Description
Technical field
The present invention relates to wireless telecommunications system production technical field, particularly relate to a kind of radio-frequency module, sampling apparatus, Antenna testing system and antenna test method.
Background technology
For the base station radio-frequency antenna that a mobile communication cause uses, before putting into base station and using, to test the indices of base station radio-frequency antenna, wherein, this indices comprises standing wave, phase place and isolation etc., when these indexs all confirm qualified after, this base station radio-frequency antenna just can shipment to applications client.
Existing proving installation is substantially based on research and development type, it can provide the fundamental measurement of basic index, but in the testing authentication process of whole base station radio-frequency antenna, a lot of link needs to rely on manually carries out operating, controls and observation etc., not only testing efficiency is lower, and easily because artificial erroneous judgement thus cause underproof base station radio-frequency antenna stream to go to applications client.
Summary of the invention
The technical matters that the present invention mainly solves is to provide a kind of radio-frequency module, sampling apparatus, Antenna testing system and antenna test method, when for test antenna phase place, can improve testing efficiency and test mass.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of radio-frequency module for antenna measurement, comprise: radio frequency body and the driving circuit be arranged on radio frequency body, driving circuit is provided with signal input part, signal output part and at least one parameter receiving end; Wherein, signal output part is as bypass ends in order to connect the signal input part of driving circuit in another radio-frequency module, and parameter receiving end is connected with probe, pops one's head in the measurement parameter gathering antenna to be measured; External control signal is input to driving circuit from signal input part, and driving circuit is according to one of them in external control signal selectivity enable signal output terminal or selectivity at least one parameter receiving end enable.
Wherein, radio frequency body one end is provided with connector, the other end is provided with web member, and web member is for connecting the connector of another radio-frequency module and then radio-frequency module and another radio-frequency module being connected and fixed.
Wherein, radio frequency body interior is provided with accommodation space, and accommodation space is used for collecting company's fitting.
For solving the problems of the technologies described above, another technical solution used in the present invention is: provide a kind of sampling apparatus for antenna measurement, at least comprises the first radio-frequency module and the second radio-frequency module; First radio-frequency module comprises the first radio frequency body and is arranged at the first driving circuit on the first radio frequency body, and the first driving circuit is provided with the first signal input part, the first signal output part and at least one the first parameter receiving end; External control signal is input to the first driving circuit from the first signal input part, and the first driving circuit is according to one of them in enable first signal output part of external control signal selectivity or selectivity at least one first parameter receiving end enable; Second radio-frequency module comprises the second radio frequency body and is arranged at the second driving circuit on the second radio frequency body, second driving circuit is provided with secondary signal input end, secondary signal output terminal and at least one the second parameter receiving end, first parameter receiving end and the second parameter receiving end are connected with probe, the measurement parameter of probe in order to gather antenna to be measured, further, the first signal output part of the first driving circuit connects the secondary signal input end of the second driving circuit; When the first enable first signal output part of driving circuit, external control signal is input to the second driving circuit from secondary signal input end by the first signal output part, and the second driving circuit is according to one of them in external control signal selectivity enable secondary signal output terminal or selectivity at least one second parameter receiving end enable.
Wherein, first radio frequency body of the first radio-frequency module and the second radio-frequency module second radio frequency body one end is provided with connector, the other end is provided with web member, the web member of the first radio frequency body connects the connector of the second radio frequency body and then the first radio-frequency module and the second radio-frequency module is connected and fixed.
Wherein, the first radio frequency body and the second radio frequency body interior are provided with accommodation space, and the accommodation space of the first radio frequency body is for accommodating the web member of the first radio frequency body, and the accommodation space of the second radio frequency body is for accommodating the web member of the second radio frequency body.
Wherein, sampling apparatus comprises housing, first radio-frequency module and the second radio-frequency module are all arranged at enclosure interior, wherein, housing is provided with the first port and the second port, first signal input port of the first driving circuit connects the first port, and the first radio-frequency module is all connected the second port with respective each probe of the second radio-frequency module.
Wherein, housing is the housing that can penetrate electromagnetism.
For solving the problems of the technologies described above, another technical solution used in the present invention is: provide a kind of Antenna testing system, comprises the sampling apparatus described by above-mentioned any one embodiment.
Wherein, Antenna testing system comprises control terminal, network analyzer, matrix switch module and breakout box, and wherein, breakout box is used for converting usb signal to TTL signal, wherein, control terminal is connected with sampling apparatus by breakout box, and the control terminal control end of interconnection network analyser and the control end of matrix switch module respectively, and, the output terminal of network analyzer, input end is connected respectively the input end of matrix switch module, output terminal, wherein, matrix switch module also comprises multiple test port, the input end of multiple test port equal selectivity connection matrix switch module and output terminal, wherein, a test port in the input end of matrix switch module and multiple test port connects and composes the first test channel, and another test port connects and composes the second test channel in the output terminal of matrix switch module and multiple test port, and, second test channel connects the first port of sampling apparatus, the first control signal gating first test channel that matrix switch module sends over according to control terminal and the second test channel, the test signal that first test channel sends in order to the output terminal being received from network analyzer, the each transmitter unit of antenna to be measured obtains test signal from the first test channel and test signal is launched, sampling apparatus selects corresponding probe with separately according to control terminal through the second control signal that breakout box sends over, gather the phase parameter of each transmitter unit of antenna to be measured successively, the input end of network analyzer obtains phase parameter from the second test channel.
Wherein, Antenna testing system comprises suction ripple wall; Inhaling the electromagnetic wave that ripple wall leaks out for absorbing antenna to be measured in sampling apparatus, wherein, inhaling the electromagnetic wave that ripple wall absorbs 700MHz-3GHz.
Wherein, the part of inhaling ripple wall electromagnetic wave absorption adopts high magnetic conductivity ferrite material.
Wherein, breakout box is USB-TTL controller.
For solving the problems of the technologies described above, another technical solution used in the present invention is: provide a kind of antenna test method, comprise the Antenna testing system described by above-mentioned arbitrary embodiment, comprise the steps: that matrix switch module is according to the first control signal gating first test channel and the second test channel, the test signal that the first test channel sends in order to the output terminal receiving network analyzer; The each transmitter unit of antenna to be measured obtains test signal from the first test channel and launches; Sampling apparatus according to the probe of second control signal its relevant position enable to gather the phase parameter of each transmitter unit of antenna to be measured separately, successively and phase parameter to be sent to the input end of network analyzer from the second test channel; Wherein, matrix switch module comprises multiple test port, the input end of multiple test port equal selectivity connection matrix switch module and output terminal, wherein, a test port in the input end of matrix switch module and multiple test port connects and composes the first test channel, and another test port connects and composes the second test channel in the output terminal of matrix switch module and multiple test port, and the second test channel connects the first port of sampling apparatus.
The invention has the beneficial effects as follows: the situation being different from prior art, radio-frequency module of the present invention is by signalization input end on the driving circuit of same radio-frequency module, signal output part and at least one parameter receiving end, wherein, the corresponding probe connecting sampling of each parameter receiving end, the more heterogeneous isostructural radio-frequency module and radio-frequency module can be connected, by the arbitrary parameter receiving end in external control signal selectivity enable respective radio-frequency module drive circuit, or selectivity enable signal output terminal, do not need that artificial progressively the collection of the test parameter of each transmitter unit of observation line is treated in mobile probe and then realization, the automation collection of the test parameter treating each transmitter unit of observation line can be realized and precision is adjustable, human cost can be reduced, time cost and testing apparatus cost, and then testing efficiency and test mass can be improved.
Accompanying drawing explanation
Fig. 1 is the structural representation of radio-frequency module embodiment of the present invention;
Fig. 2 is the circuit diagram of driving circuit in the embodiment of radio-frequency module shown in Fig. 1;
Fig. 3 is the connection diagram of radio-frequency module shown in Fig. 1 and another radio-frequency module;
Fig. 4 is the structural representation of sampling apparatus embodiment of the present invention;
Fig. 5 is the circuit diagram of driving circuit in the embodiment of sampling apparatus shown in Fig. 4;
Fig. 6 is the structural representation of another embodiment of sampling apparatus of the present invention;
Fig. 7 is the structural representation of inventive antenna test macro embodiment;
Fig. 8 is the circuit diagram of USB-TTL controller in the embodiment of Antenna testing system shown in Fig. 7;
Fig. 9 is the structural representation inhaling ripple wall in inventive antenna test macro embodiment;
Figure 10 is the process flow diagram of inventive antenna method of testing embodiment.
Embodiment
Below in conjunction with drawings and embodiments, the present invention is described in detail.
Composition graphs 1 to Fig. 3, Fig. 1 are the structural representations of radio-frequency module embodiment of the present invention, and Fig. 2 is the circuit diagram of driving circuit in the embodiment of radio-frequency module shown in Fig. 1, and Fig. 3 is the connection diagram of radio-frequency module shown in Fig. 1 and another radio-frequency module.Radio-frequency module embodiment of the present invention comprises: radio frequency body 11 and driving circuit 12.
Driving circuit 12 is arranged on radio frequency body 11, driving circuit 12 is provided with signal input part 121, signal output part 122 and three parameter receiving ends 123,124,125, parameter receiving end 123 connects probe 131, parameter receiving end 124 connects probe 132, parameter receiving end 125 connects probe 133, probe 131,132,133 is in order to gather the measurement parameter of antenna to be measured, and wherein, measurement parameter at least comprises phase parameter.Usually, pop one's head in 131, probe 132 and probe 133 can equidistantly or unequal-interval setting.Wherein, composition graphs 3, signal output part 122 as bypass ends in order to connect the signal input part (not shown) of driving circuit (not shown) in another radio-frequency module 1 ', for example, driving circuit 12 can select hilted broadsword four-throw radio-frequency (RF) switch (SP4T radio-frequency (RF) switch).The quantity of probe depends on the quantity of parameter receiving end, and in full, in each radio-frequency module, the quantity of parameter receiving end is at least set to one, is three is in full illustrated with parameter receiving end quantity in a radio-frequency module.
External control signal is input to driving circuit 12 from signal input part 121, and driving circuit 12 is according to one of them in external control signal selectivity enable signal output terminal 122 or the enable parameter receiving end 123,124,125 of selectivity.Or signal output part 122 is enabled that is, or in parameter receiving end 123,124,125, any one is enabled, parameter receiving end 123,124,125 any one when being enabled, its corresponding probe connected is sampled.
Embodiment of the present invention, by signalization input end 121 on the driving circuit 12 of same radio-frequency module 1, signal output part 122 and parameter receiving end 123, 124, 125, wherein, parameter receiving end 123, 124, the probe 131 of 125 corresponding connections for sampling, 132, 133, the more heterogeneous isostructural radio-frequency module and radio-frequency module 1 can be connected, by the arbitrary parameter receiving end in external control signal selectivity enable respective radio-frequency module drive circuit, or selectivity enable signal output terminal, do not need that artificial progressively the collection of the test parameter of each transmitter unit of observation line is treated in mobile probe and then realization, the automation collection of the test parameter treating each transmitter unit of observation line can be realized and precision is adjustable, human cost can be reduced, time cost and testing apparatus cost, and then testing efficiency and test mass can be improved.
Continue to consult Fig. 1 and Fig. 3, in an application implementation mode, radio frequency body 11 one end is provided with connector 111, the other end is provided with web member 112, and web member 112 is for connecting the connector (not shown) of another radio-frequency module 1 ' and then radio-frequency module 1 and another radio-frequency module 1 ' being connected and fixed.Radio frequency body 11 inside can be provided with accommodation space 113, when not needing use web member 112 or do not need to use whole length of web member 112, accommodation space 113 can collecting company's fitting 112 all or part of.The connection that connector 111 and web member 112 can facilitate radio-frequency module 1 is set, improves packaging efficiency; And accommodation space 113 is set in radio frequency body 11 inside with collecting company's fitting 112, can make the adjustable length of radio frequency body 11, the spacing not only between each radio-frequency module 1 of convenient adjustment, also can instant packed, transport to be suitable for different test environment.
Composition graphs 4 and Fig. 5, Fig. 4 are the structural representations of sampling apparatus embodiment of the present invention, and Fig. 5 is the schematic diagram of driving circuit in the embodiment of sampling apparatus shown in Fig. 4.The sampling apparatus of embodiment of the present invention at least comprises: the first radio-frequency module 2 and the second radio-frequency module 3.
The first driving circuit 22 that first radio-frequency module 2 comprises the first radio frequency body 21 and is arranged on the first radio frequency body 21, first driving circuit 22 is provided with the first signal input part 221, first signal output part 222 and the first parameter receiving end 223,224,225, further, the first parameter receiving end 223,224,225 corresponding connection probe 231,232,233 respectively.
External control signal is input to one of them according to external control signal selectivity in enable first signal output part 222 or the enable first parameter receiving end 223,224,225 of selectivity of the first driving circuit 22, first driving circuit 22 from the first signal input part 221.
The second driving circuit 32 that second radio-frequency module 3 comprises the second radio frequency body 31 and is arranged on the second radio frequency body 31, second driving circuit 32 is provided with secondary signal input end 321, secondary signal output terminal 322 and the second parameter receiving end 323,324,325, second parameter receiving end 323,324,325 corresponding connection probe 331,332,333 respectively.Further, the first signal output part 222 of the first driving circuit 22 connects the secondary signal input end 321 of the second driving circuit 32.
When wanting the secondary signal output terminal 322 in enable second driving circuit 32 or one of them in the second parameter receiving end 323,324,325, need enable first signal output part 222 of the first driving circuit 22, external control signal is input to the second driving circuit 32, second driving circuit 32 according to one of them in external control signal selectivity enable secondary signal output terminal 322 or the enable second parameter receiving end 323,324,325 of selectivity from secondary signal input end 321 by the first signal output part 222.
Certainly, sampling apparatus can comprise the radio-frequency module of more than three or three, when wanting the signal output part of driving circuit in the enable rear radio-frequency module of selectivity or want one of them in selectivity at least one parameter receiving end enable, need the signal output part of all radio-frequency modules before first this rear radio-frequency module enable, the driving circuit of this rear radio-frequency module just can get external control signal like this, and detailed process can with reference to above.More multi-radio of connecting can cover different antennas to be measured.
Embodiment of the present invention, by the arbitrary parameter receiving end in external control signal selectivity enable respective radio-frequency module drive circuit or selectivity enable signal output terminal, do not need that artificial progressively the collection of the test parameter of each transmitter unit of observation line is treated in mobile probe and then realization, the automation collection of the test parameter treating each transmitter unit of observation line can be realized and precision is adjustable, human cost, time cost and testing apparatus cost can be reduced, and then testing efficiency and test mass can be improved.
Certainly, in embody rule embodiment, as shown in Figure 5, first radio frequency body 21 one end of first radio-frequency module 2 is provided with connector 211, the other end is provided with web member 212 and second radio frequency body 31 one end of the second radio-frequency module 3 is provided with connector 311, the other end is provided with web member 312, and the web member 212 of the first radio frequency body 21 connects the connector 311 of the second radio frequency body 31 and then the first radio-frequency module 2 and the second radio-frequency module 3 is connected and fixed.And, accommodation space 213 can be set in the first radio frequency body 21 inside, in the second radio frequency body 31 inside, accommodation space 313 is set, the accommodation space 213 of the first radio frequency body 21 is for accommodating the accommodation space 313 of web member 212, the second radio frequency body 31 of the first radio frequency body 21 for accommodating the web member 312 of the second radio frequency body 31.
Further, as shown in Figure 6, Fig. 6 is the structural representation of another embodiment of sampling apparatus of the present invention, and incorporated by reference to Fig. 4.Sampling apparatus also comprises: housing 100.
It is inner that first radio-frequency module 2 and the second radio-frequency module 3 are all arranged at housing 100, wherein, housing 100 is provided with the first port (not shown) and the second port (not shown), first signal input part 221 of the first driving circuit 22 connects the first port, first radio-frequency module 2 is all connected the second port with respective each probe of the second radio-frequency module 3, as shown in Figure 6, the probe 331,332,333 etc. of probe 231,232,233 and second radio-frequency module 3 of the first radio-frequency module 2.When the quantity of radio-frequency module is more, it is inner that it is arranged at housing 100 with reference to the first radio-frequency module 2 and the second radio-frequency module 3, do not repeat one by one herein.
Housing 100 is the housing that can penetrate electromagnetism, and housing 100 can not treat the signal generation reflection that observation line is launched, and effectively can reduce because signal reflex is on the impact of measurement parameter, improve test accuracy.
Consult Fig. 7, Fig. 7 is the structural representation of inventive antenna test macro embodiment.And incorporated by reference to Fig. 5 and Fig. 6, inventive antenna test macro embodiment not only comprises the sampling apparatus 10 described by above-mentioned embodiment, also comprises network analyzer 20, matrix switch module 30, breakout box 40, GPIB module 50 and control terminal 60.
Wherein, control terminal 60 is connected with sampling apparatus 10 by breakout box 40, and breakout box 40 is for converting usb signal to TTL signal, and it adopts USB-TTL controller usually.Particularly, as shown in Figure 8, USB-TTL controller 40 comprises the USB input port 401, USB output port 402, TTL input port 403 and the TTL output port 404 that connect successively, USB interface 601, the TTL output port 404 of USB input port 401 connection control terminal 60 connects the second port one 02 of sampling apparatus 10; And control terminal 60 is by GPIB module 50 interconnection network analyser 20 and matrix switch module 30 respectively.Usually, control terminal 60 is terminal.
And, the output terminal 201 of network analyzer 20, input end 202 is connected respectively the input end 301 of matrix switch module 30, output terminal 302, wherein, matrix switch module 30 also comprises multiple test port (test port 303 as shown in Figure 7, 304, 305), the input end 301 of the equal alternative connection matrix switch module 30 of multiple test port and output terminal 302, namely the input end 301 of matrix switch module 30 connects its all test port, the output terminal 302 of matrix switch module 30 also connects its all test port, when the phase test for antenna 70 to be measured, the enable corresponding port of control signal that matrix switch module 30 sends over according to control terminal 60, namely corresponding test channel is selected to send or receiving parameter, particularly, input end 301 and multiple test port (303 of matrix switch module 30, 304, 305) test port (as 304) in connects and composes the first test channel, and the output terminal 302 of matrix switch module 30 and multiple test port (303, 304, 305) in, another test port (303) connects and composes the second test channel.Wherein, the test port 303 of matrix switch module 30 is connected with the first port 101 of sampling apparatus 10, and namely the second test channel connects the first port 101 of sampling apparatus 10.
The first control signal gating first test channel that matrix switch module 30 sends over through GPIB module 50 according to control terminal 60 and the second test channel, with the test signal that the output terminal 201 receiving network analyzer 20 sends, the each transmitter unit 701 of antenna 70 to be measured obtains this test signal from the first test channel and test signal is launched, sampling apparatus 10 selects corresponding probe (can consult Fig. 4-Fig. 6) with separately according to control terminal 60 through the second control signal that USB-TTL controller 40 sends over, gather the phase parameter of each transmitter unit 701 of antenna 70 to be measured successively, the input end 202 of network analyzer 20 obtains phase parameter from the second test channel, namely the test port 303 of matrix switch module 30 is obtained phase parameter through the first port 101 of sampling apparatus 10 and by the second test channel, phase parameter is sent to the input end 202 of network analyzer 20.
As shown in Figure 9, Antenna testing system also comprises suction ripple wall 80.Inhaling ripple wall 80 for absorbing the electromagnetic wave that antenna 70 to be measured leaks out in sampling apparatus 10, wherein, inhaling the electromagnetic wave that ripple wall 80 absorbs 700MHz-3GHz.The part of inhaling ripple wall 80 electromagnetic wave absorption adopts high magnetic conductivity ferrite material, inhales the mode electromagnetic wave absorption most emittance of ripple wall 80 by resonance, then by coupling, electromagnetic energy conversion is become heat energy.Set up the electromagnetic wave inhaled ripple wall 80 Absorbable rod and reveal, the impact of electromagnetic interference (EMI) on probe sampling data accuracy can be eliminated dramatically.
In above-mentioned embodiment, need to treat observation line 70 and carry out position setting and connection, particularly, need by each transmitter unit of antenna 70 to be measured 701 each probe of the corresponding sampling apparatus 10 of the surface of emission arrange, namely need sampling apparatus to be covered antenna 70 to be measured, then inhale ripple wall 80 with the electromagnetic wave from sampling apparatus 10 leakage after absorbing sampling of pop one's head in the arranged outside of sampling apparatus 10.
Further, antenna 70 to be measured at least comprises the first port 702, treats observation line 70 when carrying out phase test, test port 304 (or test port 305) in the first port 702 connection matrix switch module 30 of this antenna 70 to be measured.
Control terminal 60 sends the first control signal to matrix switch module 30 to select corresponding test channel by GPIB module 50, this test channel receives the test signal sent in order to the output terminal 201 being received from network analyzer 20, and the first port 702 of antenna 70 to be measured obtains this test signal and launched by this signal.
And, when carrying out phase test, also need to select to pop one's head in the phase parameter gathering each transmitter unit 701 of antenna 70 to be measured accordingly in sampling apparatus 10, particularly, control terminal 60 sends the second control signal (the second control signal is TTL signal) by USB-TTL controller 40 and selects to pop one's head in accordingly in sampling apparatus 10, the each transmitter unit 701 of antenna 70 to be measured finally can be made can to carry out one_to_one corresponding with probe, it should be noted that, for guaranteeing measuring accuracy, synchronization can only be sampled to the phase parameter of a transmitter unit 701, namely control terminal 60 can only be sampled by some probes of a certain radio-frequency module in enable sampling apparatus 10 at synchronization.Certainly, in practical operation, the selection for the second control signal needs to consider the parameter such as the spacing of each probe and the size of antenna to be measured 70.
Finally, the test port 303 of matrix switch module 30 is obtained phase parameter through the first port 101 of sampling apparatus 10 and by test channel, phase parameter is sent to the input end 202 of network analyzer 20 from the output terminal 302 of matrix switch module 30, carries out phase analysis for network analyzer 20.
Certainly, the performance such as isolation and standing-wave ratio (SWR) that inventive antenna test macro can also be used for treating observation line 70 is tested.Briefly:
Usually, antenna 70 to be measured comprises multiple transmitter unit 701, each transmitter unit 701 comprises a HFS 7011 and a low frequency part 7012 further, the HFS 7011 of each transmitter unit 701 is all connected to the first port 702 of antenna 70 to be measured, and the low frequency part 7012 of each transmitter unit 701 is all connected to the second port 703 of antenna 70 to be measured.
(1) when testing isolation, first antenna 70 to be measured is carried out connection with matrix switch module 30, particularly, the test port 304 (or test port 305) of matrix switch module 30 is connected to the first port 702 of antenna 70 to be measured, and the test port 305 (or test port 304) of matrix switch module 30 is connected to the second port 703 of antenna 70 to be measured.
Such as, network analyzer 20 sends high-frequency signal from its output terminal 201 and inputs to the first port 702 of antenna 70 to be measured successively through the input end 301 of matrix switch module 30, the test port 304 of matrix switch module 30, second port 703 of antenna 70 to be measured obtains this high-frequency signal and inputs to the input end 202 of network analyzer 20 successively through the test port 304 of matrix switch module 30, the output terminal 302 of matrix switch module 30, analyzes for network analyzer 20.
Correspondingly, network analyzer 20 sends low frequency signal from its output terminal 201 and inputs to the second port 703 of antenna 70 to be measured successively through the input end 301 of matrix switch module 30, the test port 305 of matrix switch module 30, first port 702 of antenna 70 to be measured obtains this low frequency signal and inputs to the input end 202 of network analyzer 20 successively through the test port 305 of matrix switch module 30, the output terminal 302 of matrix switch module 30, analyzes for network analyzer 20.
When specifically judging whether antenna 70 to be measured meets insulated degree requirement, if when the high-frequency signal strength that the second port 703 that analysis obtains antenna 70 to be measured gets is less than certain value, if and when the low frequency signal intensity that the first port 702 that analysis obtains matrix switch module 30 gets is less than certain value, can judge that the isolation obtaining antenna 70 to be measured meets the demands.
Certainly, network analyzer 20 can send the mixed signal comprising high-frequency signal and low frequency signal simultaneously, and its principle of work can be consulted above.
(2), when testing standing-wave ratio (SWR), also need first antenna 70 to be measured to be carried out connection with matrix switch module 30.Particularly, the test port 304 of matrix switch module 30, in 305, any one test port is connected to the first port 702 (or second port 703) of antenna 70 to be measured, network analyzer 20 sends test massage from its output terminal 201, and (this test signal can be high-frequency signal, low frequency signal or comprise the mixed signal of high-frequency signal and low frequency signal), and successively through the input end 301 of matrix switch module 30, the test port 304 (or test port 305) of matrix switch module 30 inputs to the first port 702 (or second port 703) of antenna 70 to be measured, first port 702 (or second port 703) of antenna 70 to be measured obtains the corresponding reflected signal of this low frequency signal also successively through the test port 304 (or test port 305) of matrix switch module 30, the output terminal 302 of matrix switch module 30 inputs to the input end 202 of network analyzer 20, analyze for network analyzer 20.
When specifically judging whether antenna 70 to be measured meets standing-wave ratio (SWR) requirement, only need judge whether the ratio of input signal and reflected signal is less than port reflects coefficient.If namely the ratio of input signal and reflected signal is less than port reflects coefficient, can judge that antenna 70 to be measured meets standing-wave ratio (SWR) requirement.
Embodiment of the present invention, do not need that artificial progressively the collection of the test parameter of each transmitter unit 701 of observation line 70 is treated in mobile probe and then realization, the automation collection of the test parameter treating each transmitter unit 701 of observation line 70 can be realized and precision is adjustable, human cost, time cost and testing apparatus cost can be reduced, and then testing efficiency and test mass can be improved.In addition, embodiment of the present invention can not only realize the phase test treating observation line 70, can also realize treating the tests such as observation line 70 isolation and standing-wave ratio (SWR).
The present invention also provides a kind of antenna test method.
Consult Figure 10, Figure 10 is the process flow diagram of inventive antenna method of testing embodiment.Based on the Antenna testing system of above-mentioned embodiment, inventive antenna method of testing embodiment comprises the steps:
Step S101, matrix switch module according to the first control signal gating first test channel and the second test channel, the test signal that the first test channel sends in order to the output terminal receiving network analyzer.
Step S102, each transmitter unit of antenna to be measured obtains test signal from the first test channel and launches.
Step S103, sampling apparatus according to the probe of second control signal its relevant position enable to gather the phase parameter of each transmitter unit of antenna to be measured separately, successively and phase parameter to be sent to the input end of network analyzer from the second test channel.
Wherein, matrix switch module comprises multiple test port, the input end of multiple test port equal selectivity connection matrix switch module and output terminal, wherein, a test port in the input end of matrix switch module and multiple test port connects and composes the first test channel, and another test port connects and composes the second test channel in the output terminal of matrix switch module and multiple test port, and the second test channel connects the first port of sampling apparatus.
Embodiment of the present invention, can realize the automation collection of the test parameter treating each transmitter unit of observation line and precision is adjustable, can reduce human cost, time cost and testing apparatus cost, and then can improve testing efficiency and test mass.In addition, embodiment of the present invention can not only realize the phase test treating observation line, can also realize treating surveying the test such as isolation between antennas and standing-wave ratio (SWR).
The foregoing is only embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize instructions of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (14)
1., for a radio-frequency module for antenna measurement, it is characterized in that:
Described radio-frequency module comprises radio frequency body and is arranged at the driving circuit on described radio frequency body, and described driving circuit is provided with signal input part, signal output part and at least one parameter receiving end;
Wherein, described signal output part is as bypass ends in order to connect the signal input part of driving circuit in another radio-frequency module, and described parameter receiving end is connected with probe, and described probe is in order to gather the measurement parameter of antenna to be measured;
External control signal is input to described driving circuit from described signal input part, and described driving circuit is according to one of them in the enable described signal output part of described external control signal selectivity or the enable parameter receiving end described at least one of selectivity.
2. radio-frequency module according to claim 1, is characterized in that,
Described radio frequency body one end is provided with connector, the other end is provided with web member, and described web member is for connecting the connector of another radio-frequency module described and then described radio-frequency module and another radio-frequency module described being connected and fixed.
3. radio-frequency module according to claim 2, is characterized in that,
Described radio frequency body interior is provided with accommodation space, and described accommodation space is for accommodating described web member.
4., for a sampling apparatus for antenna measurement, it is characterized in that,
At least comprise the first radio-frequency module and the second radio-frequency module;
Described first radio-frequency module comprises the first radio frequency body and is arranged at the first driving circuit on described first radio frequency body, and described first driving circuit is provided with the first signal input part, the first signal output part and at least one the first parameter receiving end;
External control signal is input to described first driving circuit from described first signal input part, and described first driving circuit is according to one of them in enable described first signal output part of described external control signal selectivity or the enable first parameter receiving end described at least one of selectivity;
Described second radio-frequency module comprises the second radio frequency body and is arranged at the second driving circuit on described second radio frequency body, described second driving circuit is provided with secondary signal input end, secondary signal output terminal and at least one the second parameter receiving end, described first parameter receiving end and described second parameter receiving end are connected with probe, described probe is in order to gather the measurement parameter of antenna to be measured, further, described first signal output part of described first driving circuit connects the described secondary signal input end of described second driving circuit;
When described first enable described first signal output part of driving circuit, described external control signal is input to described second driving circuit from described secondary signal input end by described first signal output part, and described second driving circuit is according to one of them in the enable described secondary signal output terminal of described external control signal selectivity or the enable second parameter receiving end described at least one of selectivity.
5. sampling apparatus according to claim 4, is characterized in that,
Second radio frequency body one end is provided with connector, the other end is provided with web member for the described first radio frequency body of described first radio-frequency module and described second radio-frequency module described, and the described web member of described first radio frequency body connects the connector of described second radio frequency body and then described first radio-frequency module and described second radio-frequency module is connected and fixed.
6. sampling apparatus according to claim 5, is characterized in that,
Described first radio frequency body and described second radio frequency body interior are provided with accommodation space, the described accommodation space of described first radio frequency body is for accommodating the web member of described first radio frequency body, and the described accommodation space of described second radio frequency body is for accommodating the web member of described second radio frequency body.
7. sampling apparatus according to claim 4, is characterized in that,
Described sampling apparatus comprises housing, described first radio-frequency module and described second radio-frequency module are all arranged at described enclosure interior, wherein, described housing is provided with the first port and the second port, described first signal input port of described first driving circuit connects described first port, and described first radio-frequency module is all connected described second port with the respective each described probe of described second radio-frequency module.
8. sampling apparatus according to claim 7, is characterized in that,
Described housing is the housing that can penetrate electromagnetism.
9. an Antenna testing system, is characterized in that, comprises the sampling apparatus as described in any one of claim 4-8.
10. Antenna testing system according to claim 9, is characterized in that,
Described Antenna testing system comprises control terminal, network analyzer, matrix switch module and breakout box, and wherein, described breakout box is used for converting usb signal to TTL signal;
Wherein, described control terminal is connected with described sampling apparatus by described breakout box, and described control terminal connects the control end of described network analyzer and the control end of described matrix switch module respectively;
And, the output terminal of described network analyzer, input end is connected respectively the input end of described matrix switch module, output terminal, wherein, described matrix switch module also comprises multiple test port, the equal selectivity of multiple described test ports connects input end and the output terminal of described matrix switch module, wherein, a test port in the input end of described matrix switch module and multiple described test port connects and composes the first test channel, and another test port connects and composes the second test channel in the output terminal of described matrix switch module and multiple described test port, and, described second test channel connects the first port of described sampling apparatus,
First test channel and the second test channel described in the first control signal gating that described matrix switch module sends over according to described control terminal, the test signal that described first test channel sends in order to the output terminal being received from described network analyzer, the each transmitter unit of antenna to be measured obtains described test signal from described first test channel and described test signal is launched, described sampling apparatus selects corresponding probe with separately according to described control terminal through the second control signal that described breakout box sends over, gather the phase parameter of each transmitter unit of described antenna to be measured successively, the input end of described network analyzer obtains described phase parameter from described second test channel.
11. Antenna testing systems according to claim 10, is characterized in that,
Described Antenna testing system comprises inhales ripple wall;
The electromagnetic wave that described suction ripple wall leaks out in described sampling apparatus for absorbing described antenna to be measured, wherein, described suction ripple wall absorbs the electromagnetic wave of 700MHz-3GHz.
12. Antenna testing systems according to claim 11, is characterized in that,
The part of described suction ripple wall electromagnetic wave absorption adopts high magnetic conductivity ferrite material.
13. Antenna testing systems according to claim 10, is characterized in that,
Described breakout box is USB-TTL controller.
14. 1 kinds of antenna test methods, comprise the Antenna testing system as described in any one of claim 10-13, it is characterized in that, comprise the steps:
Matrix switch module according to the first control signal gating first test channel and the second test channel, the test signal that described first test channel sends in order to the output terminal receiving network analyzer;
The each transmitter unit of antenna to be measured obtains described test signal from described first test channel and launches;
Sampling apparatus according to the probe of second control signal its relevant position enable to gather the phase parameter of each transmitter unit of described antenna to be measured separately, successively and described phase parameter to be sent to the input end of described network analyzer from the second test channel;
Wherein, described matrix switch module comprises multiple test port, the equal selectivity of multiple described test ports connects input end and the output terminal of described matrix switch module, wherein, a test port in the input end of described matrix switch module and multiple described test port connects and composes the first test channel, and another test port connects and composes the second test channel in the output terminal of described matrix switch module and multiple described test port, further, described second test channel connects the first port of described sampling apparatus.
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| CN107966619A (en) * | 2017-11-24 | 2018-04-27 | 北京小米移动软件有限公司 | Obtain the method, apparatus and storage medium and analyzer of Antenna Operation efficiency |
| EP3540446B1 (en) * | 2018-03-13 | 2021-09-29 | Rohde & Schwarz GmbH & Co. KG | Measurement system and method for operating a measurement system |
| CN110873824A (en) * | 2018-08-31 | 2020-03-10 | 南京捷希科技有限公司 | Massive MIMO antenna test system and method |
| CN111323656B (en) * | 2020-03-24 | 2023-02-03 | 南京纳特通信电子有限公司 | High-efficiency amplitude-phase test system and test method for multi-channel passive antenna array |
| CN113176528B (en) * | 2021-04-29 | 2025-03-18 | 杭州微影医疗科技有限公司 | Interference elimination method, medium and device |
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