CN202817176U

CN202817176U - Adjustable antenna module

Info

Publication number: CN202817176U
Application number: CN 201220515841
Authority: CN
Inventors: 薛木坤; 林明忠
Original assignee: Smart Approach Co Ltd
Current assignee: Smart Approach Co Ltd
Priority date: 2012-09-29
Filing date: 2012-09-29
Publication date: 2013-03-20
Anticipated expiration: 2022-09-29

Abstract

An adjustable antenna module includes a grounding portion, a radiating line, a short circuit, a parasitic line, a frequency control unit and a control element. The radiating line has a first portion, a second portion and a third portion, and the first portion has a feeding portion, and the second portion and the third portion have a first radiating end and a second radiating end respectively. The short circuit connects the feeding portion and the grounding portion. The parasitic line has a fourth portion and a fifth portion and is adjacent to the first radiating end, the fourth portion is connected to the grounding portion, and the fifth portion has a third radiating end. The frequency control unit is configured adjacent to the first radiating end and connected to the grounding portion. The control element receives a frequency control signal through a digital control circuit and adjusts the area of the frequency control unit accordingly. Thereby, the antenna has the ability to transmit and receive multiple frequencies.

Description

The adjustable antenna module

Technical field

The utility model relates to a kind of antenna, particularly a kind of adjustable antenna module.

Background technology

Development along with wireless telecommunications science and technology, the user can not limited by landform, utilize wireless telecommunication system to carry out communication, so that utilize the electronic product of wireless communication technique, for example mobile computer (Notebook Computer), mobile phone, personal digital assistant (Personal Digital Assistant, PDA) etc. quantity and the kind of portable electronic devices grow with each passing day, and the antenna that is used for the transmitting-receiving electromagnetic wave signal namely becomes one of considerable element of wireless communication apparatus.

Take mobile computer as example, for the purchase trend in response to present consumer, being seen mobile computer is is all designed and developed towards lightening on the market.Therefore, in order to necessary its size of relative decrease of the antenna size of transmitting/receiving wireless electromagnetic wave signal, or change its structure kenel, can antenna be equipped in the confined space of mobile computer inside smoothly.

In general, the antenna rough classification is inverted-F antenna (Planar Inverted-F Antenna, PIFA), unipole antenna (Monopole Antenna) and loop antenna (Loop Antenna) etc., and the existing agreement that is applied to communication field has GSM850, GSM900, DCS1800, PCS1900, WCDMA2000 etc.Yet, though above-mentioned various antennas can be loaded in the frivolous portable electronic devices of volume smoothly, can't possess the ability that multifrequency is received and dispatched because of antenna in size reduction or after changing kenel.

At present by high-speed downloads packet access (High Speed Download Packet Access, HSDA), be commonly called as the 3.5th generation (3.5G) mechanics of communication, march toward gradually in the 4th generation (4G) mechanics of communication, and Long Term Evolution (Long Term Evolution, LTE) be a new generation's action radio wideband technology that gets most of the attention in the market, and become the one preferred technique of 4G communication field.Yet existing various types of antenna assemblies only possess the function of double frequency transmitting-receiving or three transmitting/receiving electromagnetic wave signal frequently, and can't satisfy the now bandwidth of 4G communication field, in the use still many restrictions.

The utility model content

In view of above problem, the purpose of this utility model is to provide a kind of adjustable antenna module, uses the ability that makes antenna possess the multifrequency transmitting-receiving, to satisfy the now demand of 4G low frequency communication technology.

For reaching above-mentioned purpose, the utility model provides a kind of adjustable antenna module, and it comprises:

One grounding parts;

One radial line, this radial line has one first position, one second position and one the 3rd position, one end at this first position is connected in this second position, and the other end at this first position has a feeding portion, one end at this second position connects an end at the 3rd position, the other end at this second position and the other end at the 3rd position and is respectively one first spoke side and one second spoke side, and the frequency band range of the frequency band range of this first spoke side and this second spoke side is different;

One short circuit line is positioned at a side of this feeding portion, and two ends of this short circuit line connect respectively this feeding portion and this grounding parts, and the centre of this short circuit line presents a warp architecture;

One parasitic circuit, this parasitism circuit has one the 4th position and one the 5th position, one end at the 4th position is connected in an end at the 5th position, and the 4th position is adjacent to the opposite side of this feeding portion, the other end at the 4th position connects this grounding parts, and the other end at the 5th position has one the 3rd spoke side, and wherein the frequency band range of the frequency band range of the 3rd spoke side and this first spoke side and this second spoke side is different;

One frequency regulation and control unit disposes adjacent to this first spoke side, and connects this grounding parts; And

One control element connects this frequency regulation and control unit and a digital control circuit, in order to receiving a frequency control signal by this digital control circuit, and produces according to this a plurality of control signals, regulates and control the area of unit to adjust this frequency.

Above-mentioned adjustable antenna module wherein also comprises a substrate, and this grounding parts, this radial line, this short circuit line, this parasitism circuit, this frequency regulation and control unit and this control element are formed on this substrate.

Above-mentioned adjustable antenna module, wherein this grounding parts is a sheet metal, this warp architecture be shaped as U-shaped or the shape of a hoof.

Above-mentioned adjustable antenna module, wherein this frequency regulation and control unit comprises:

A plurality of frequency controlling elements, configuration is adjacent to this first spoke side; And

A plurality of switch elements, the one of these a plurality of switch elements are connected between the one of this grounding parts and these a plurality of frequency controlling elements, remain these a plurality of switch elements be connected in these a plurality of frequency controlling elements one and the residue these a plurality of frequency controlling elements between.

Above-mentioned adjustable antenna module, wherein these a plurality of frequency controlling elements are metal gasket, these a plurality of switch elements are radio-frequency (RF) switch.

Above-mentioned adjustable antenna module, wherein this control element comprises:

One digital control circuit connects this digital control circuit, in order to receiving this frequency control signal, and converts this frequency control signal to a logic control signal; And

One change-over circuit connects this digital control circuit and this a plurality of switch elements, in order to this logic control signal is converted to this a plurality of control signals, with conducting and the not conducting of controlling these a plurality of switch elements, and then adjusts the area of this frequency controlling element.

Above-mentioned adjustable antenna module, wherein this digital control circuit is microprocessor or the logical circuit that is combined into by active member.

Above-mentioned adjustable antenna module, wherein this change-over circuit is comprised of active member and passive device.

Above-mentioned adjustable antenna module, wherein this FREQUENCY CONTROL circuit is universal input/output bus, inter-integrated circuit bus, general asynchronous transceiver bus or tandem perimeter interface bus.

For reaching above-mentioned purpose, the utility model also provides a kind of adjustable antenna module, and it comprises:

One grounding parts;

One radial line, this radial line has one first position, one second position and one the 3rd position, one end at this first position is connected in this second position, and the other end at this first position has a feeding portion, one end at this second position connects an end at the 3rd position, the 3rd position has a warp architecture, the other end at the other end at this second position and the 3rd position is respectively one first spoke side and one second spoke side, and the frequency band range of the frequency band range of this first spoke side and this second spoke side is different;

One parasitic circuit, this parasitism circuit has one the 4th position, one end at the 4th position is adjacent to an end at this second position, and the other end at the 4th position has one the 3rd spoke side, and wherein the frequency band range of the frequency band range of the 3rd spoke side and this first spoke side and this second spoke side is different;

One frequency control unit disposes adjacent to the 3rd spoke side, and is connected between the 4th position and this grounding parts; And

One control element connects this frequency control unit and a digital control circuit, in order to receiving a frequency control signal by this digital control circuit, and produces according to this a plurality of control signals, to adjust the length of this frequency regulation and control unit.

Above-mentioned adjustable antenna module wherein also comprises a substrate, and this grounding parts, this radial line, this parasitism circuit, this frequency regulation and control unit and this control element are formed on this substrate.

Above-mentioned adjustable antenna module, wherein this grounding parts is a sheet metal, this warp architecture be shaped as U-shaped.

A plurality of frequency controlling elements, configuration is adjacent to the 3rd spoke side, and these a plurality of frequency controlling elements are sequentially arranged with a predeterminable range, and the length of these a plurality of frequency controlling elements is sequentially successively decreased by the 3rd spoke side, and an end of this frequency controlling element connects the 4th position; And

A plurality of switch elements connect in man-to-man mode between the other end and this grounding parts of these corresponding a plurality of frequency controlling elements.

Above-mentioned adjustable antenna module, wherein these a plurality of frequency controlling elements are metallic circuit, these a plurality of switch elements are radio-frequency (RF) switch.

The disclosed adjustable antenna module of the utility model, utilize radial line and parasitic circuit with adjacent mode spread configuration, to form at least three spoke sides of different frequency bands, and a plurality of frequency controlling elements are set, a plurality of switch elements and control element, and utilize control element control switch element conductive and not conducting, to adjust the resonance frequency of adjustable antenna module by the frequency controlling element, and then the resonance frequency of adjusting the adjustable antenna module is offset toward low frequency, so that antenna of the present utility model possesses small size and tool low frequency transmitting-receiving ability, can satisfy the now demand of 4G low frequency communication technology fully.

Below in conjunction with the drawings and specific embodiments the utility model is described in detail, but not as to restriction of the present utility model.

Description of drawings

Fig. 1 is the schematic diagram of adjustable antenna module of first embodiment of the utility model;

Fig. 2 is the local enlarged diagram of adjustable antenna module of first embodiment of the utility model;

Fig. 3 is the schematic diagram of the adjustable antenna module of the second embodiment of the present utility model;

Fig. 4 is the local enlarged diagram of the adjustable antenna module of the second embodiment of the present utility model;

Fig. 5 is that the adjustable antenna module of Fig. 1 and Fig. 3 reaches via the voltage standing wave ratio numeric distribution figure after the structured testing that operates in state 1;

Fig. 6 is that the adjustable antenna module of Fig. 1 and Fig. 3 reaches via the voltage standing wave ratio numeric distribution figure after the structured testing that operates in state 2;

Fig. 7 is that the adjustable antenna module of Fig. 1 and Fig. 3 reaches via the voltage standing wave ratio numeric distribution figure after the structured testing that operates in state 3;

Fig. 8 is that the adjustable antenna module of Fig. 1 and Fig. 3 reaches via the voltage standing wave ratio numeric distribution figure after the structured testing that operates in state 4.

Wherein, Reference numeral

100,200 adjustable antenna modules

110,210 substrates

120,220 grounding parts

130,230 radial lines

131,231 first positions

1311,2311 feeding portions

132,232 second positions

1321,2,321 first spoke sides

133,233 the 3rd positions

1331,2,331 second spoke sides

140 short circuit lines

150,240 parasitic circuits

151,241 the 4th positions

152 the 5th positions

1521,2411 the 3rd spoke sides

160,250 frequencies regulation and control unit

161,162,163,251,252,253,254 frequency controlling elements

171,172,173,261,262,263,264 switch elements

180,270 control elements

181,271 digital control circuits

182,272 change-over circuits

190,280 numerical digit control circuits

CS1, CS2, CS3, CS4 control signal

Embodiment

Below in conjunction with accompanying drawing structural principle of the present utility model and operation principle are done concrete description:

Please refer to Figure 1 and Figure 2, it is respectively schematic diagram and the local enlarged diagram of the adjustable antenna module of the utility model the first embodiment.It is inner that the adjustable antenna module 100 of present embodiment can be installed in a portable electronic devices (not shown), and mobile computer (notebook computer) for example is in order to receive the radio magnetic wave signal.Adjustable antenna module 100 comprises substrate 110, grounding parts 120, radial line 130, short circuit line 140, parasitic circuit 150, frequency regulation and control unit 160 and control element 180.

Substrate 110 can be the FR4 glass mat, with the carrier as adjustable antenna module 100, but not as limit.Grounding parts 120 is formed on the substrate 110, and grounding parts 120 is a sheet metal, and its material can be aluminum metal or copper metal, but is not limited with kenel and the material that present embodiment was disclosed.

Radial line 130, short circuit line 140 are formed on the substrate 110 with parasitic circuit 150, and its material can be metal material.Radial line 130 has the first position 131, the second position 132 and the 3rd position 133, one end at the first position 131 is connected on the second position 132, and an end at the second position 132 connects an end at the 3rd position 133, and makes radial line 130 summarys consist of reversed F shaped structure.

The other end at the first position 131 has feeding portion 1311.The other end at the other end at the second position 132 and the 3rd position 133 is respectively the first spoke side 1321 and the second spoke side 1331, and the frequency band range of the first spoke side 1321 and the second spoke side 1331 radio magnetic wave signal that receives is not identical.

Short circuit line 140 is positioned at a side of feeding portion 1311, and two ends of short circuit line 140 connect respectively feeding portion 1311 and grounding parts 120, and the centre of short circuit line 140 presents a warp architecture.In the present embodiment, the shape of warp architecture can be U-shaped or the shape of a hoof, but also can be other shapes.

Parasitic circuit 150 has the 4th position 151 and the 5th position 152, wherein an end at the 4th position 151 is connected in an end at the 5th position 152, and an end at the 4th position 151 is adjacent to the opposite side of feeding portion 1311, and the other end at the 4th position 151 connects grounding parts 120.And the 5th position 152 has the 3rd spoke side 1521, and the 3rd spoke side 1521 is not identical with the frequency band range of the first spoke side 1321 and the second spoke side 1331 radio magnetic wave signal that receives.

160 configurations of frequency regulation and control unit are adjacent to first spoke side 1321 at the second position 132 of radial line 130, and connection grounding parts 120.Furthermore, frequency regulation and control unit 160 also comprises frequency controlling element 161,162,163 and switch element 171,172,173.

Frequency controlling element 161,162,163 can be metal gasket (Pad), and configuration is adjacent to first spoke side 1321 at the second position 132 of radial line 130.In the present embodiment, frequency controlling element 161,162,163 for example is disposed on the same axis, and is parallel to the second position 132 of radial line 130.

Switch element 171,172,173 can be the element of radio-frequency (RF) switch (RF Switch) or other similar functions, and switch element 171,172,173 one are connected between grounding parts 120 and frequency controlling element 161,162,163 the one, and residue switch element 171,172,173 is connected between frequency controlling element 161,162,163 the one and residual frequency controlling element 161,162,163.For instance, switch element 171 is connected between grounding parts 120 and the frequency controlling element 161, and switch element 172 is connected between

frequency controlling element

161 and 162, and switch element 173 is connected between

frequency controlling element

162 and 163.

Control element 180 rate of connections regulation and control unit 160, in order to connect portable electronic devices by digital control circuit 190, to receive the frequency control signal that portable electronic devices was produced (also being outside control signal), and produce according to this a plurality of control signals, with the area of the regulation and control unit 160 of adjusting frequency, and then the resonance frequency of adjustment adjustable antenna module 100.

In the present embodiment, control element 180 comprises digital control circuit 181 and change-over circuit 182.Digital control circuit 181 linking number word control line roads 190 in order to the receive frequency control signal, and convert frequency control signal to logic control signal.Change-over circuit 182 linking number word control circuits 181 and switch element 171,172,173, be switch element 171,172,173 control voltage and a plurality of control signal CS1, CS2 and the CS3 of electric current in order to logic control signal is converted to for example, the respectively conducting of control switch element 171,172,173 and not conducting, regulate and control the size of the coupling area of unit 160 with the second position 132 of adjusting radial line 130 with frequency, and then adjust the resonance frequency of adjustable antenna module 100.

For instance, control signal CS1, CS2, the CS3 that produces respectively the accurate position of low logic when the change-over circuit 182 of control element 180 is to switch element 171,172,173 the time, switch element 171,172,173 all not conductings, then to operate in the structure of state 1 (be to connect between the frequency controlling element 161,162,163 to adjustable antenna module 100, and frequency controlling element 161 does not connect grounding parts 120), the second position 132 that makes radial line 130 not with frequency controlling element 161,162,163 couplings so that the first spoke side 1321 operates in the first frequency band range.

Produce respectively the control signal CS1 of high control voltage when the change-over circuit 182 of control element 180 to the control signal CS2 of switch element 171 and low control voltage, CS3 is to switch element 172,173 o'clock, make switch element 171 conductings, switch element 172,173 not conductings, then to operate in the structure of state 2 (be frequency controlling element 161 to adjustable antenna module 100,162, do not connect between 163, and frequency controlling element 161 connects grounding parts 120), make the

second position

132 and 161 couplings of frequency controlling element of radial line 130, so that the first spoke side 1321 operates in the second frequency band range.

Produce respectively the control signal CS1 of high control voltage when the change-over circuit 182 of control element 180, CS2 is to switch element 171,172 and the control signal CS3 of low control voltage during to switch element 173, switch element 171,172 conductings, switch element 173 not conductings, then to operate in the structure of state 3 (be not rate of connections controlling element 163 of frequency controlling element 162 to adjustable antenna module 100, and frequency controlling element 161 rate of connections controlling elements 162, and frequency controlling element 161 is to grounding parts 120), the second position 132 and frequency controlling element 161 of radial line 130,162 couplings are so that the first spoke side 1321 operates in the 3rd frequency band range.

Control signal CS1, CS2, the CS3 that produces respectively high control voltage when the change-over circuit 182 of control element 180 is to switch element 171,172,173 the time, switch element 171,172,173 conductings, then adjustable antenna module 100 (is all to connect between the frequency controlling element 161,162,163 in the structure operation of state 4, and frequency controlling element 161 connects grounding parts 120), the second position 132 and frequency controlling element 161,162,163 couplings of radial line 130 are so that the first spoke side 1321 operates in the 4th frequency band range.

In the present embodiment, aforementioned the first frequency band range, the second frequency band range, the 3rd frequency band range and the 4th frequency band range are all different, and the range size of frequency band is sequentially the first frequency band range, the second frequency band range, the 3rd frequency band range, the 4th frequency band range.Thus, utilize control switch element 171,172,173 conducting or not conductings, entire area size with the controlling element of adjusting frequency, and then the resonance frequency of adjusting adjustable antenna module 100 possesses good multifrequency transmitting-receiving ability toward the low frequency skew so that adjustable antenna module 100 can operate.

In addition, aforementioned digital control circuit 181 can be microcontroller (Microprocessor) or is made of the logical circuit that active member forms, and aforementioned change-over circuit 182 can be comprised of active member and passive device.Aforementioned digital control circuit 190 can be universal input/output (General Purpose Input/Output, GPIO) bus, inter-integrated circuit (Inter-Integrated Circuit, I2C) bus, general asynchronous transceiver (Universal Asynchronous Receiver/Transmitter, UART) bus or tandem perimeter interface (Serial Peripheral Interface, SPI) bus.

In addition, present embodiment only illustrates as example take 3 frequency controlling elements 161,162,163 and 3 switch elements 171,172,173, but the utility model is not limited to this, implements for example 2, more than 4 or 4 with frequency controlling element and switch element that can other quantity.

Please refer to Fig. 3 and shown in Figure 4, it is the schematic diagram of the adjustable antenna module of the utility model the second embodiment.It is inner that the adjustable antenna module 200 of present embodiment also can be installed in a portable electronic devices, and mobile computer for example is in order to receive the radio magnetic wave signal.Adjustable antenna module 200 comprise substrate 210, grounding parts 220, radial line 230, parasitic circuit 240, a plurality of frequency controlling element 251,252,253,254, a plurality of switch element 261,262,263,264, with control element 270.

Substrate 210 can be the FR4 glass mat, with the carrier as adjustable antenna module 200, but not as limit.Grounding parts 220 is formed on the substrate 210, and grounding parts 220 is a sheet metal, and its material can be aluminum metal or copper metal, but is not limited with kenel and the material that present embodiment was disclosed.

Radial line 230 is formed on the substrate 210 with parasitic circuit 240, and its material can be metal material.The end that radial line 230 has the first position 231, the second position 232 and 233, the first positions 231, the 3rd position is connected on the second position 232, and an end at the second position 232 connects an end at the 3rd position 233, and the 3rd position 233 has warp architecture.In the present embodiment, the shape of warp architecture can be U-shaped, but also can be other shapes.

The other end at the first position 231 has feeding portion 2311.The other end at the other end at the second position 232 and the 3rd position 233 is respectively the first spoke side 2321 and the second spoke side 2331, and the frequency band range of the first spoke side 2321 and the second spoke side 2331 radio magnetic wave signal that receives is not identical.

Parasitic circuit 240 has the 4th position 241, wherein an end at the 4th position 241 is adjacent to an end at the second position 232, and the 4th position 241 has the 3rd spoke side 2411, and the 3rd spoke side 2411 is not identical with the frequency band range of the first spoke side 2321 and the second spoke side 2331 radio magnetic wave signal that receives.

The 3rd spoke side 2411 that frequency regulation and control unit 250 disposes adjacent to the 4th position 241 of parasitic circuit 240, and connect between the 4th position 241 and grounding parts 220 of parasitic circuit 240.Furthermore, frequency regulation and control unit 250 also comprises frequency controlling element 251,252,253,254 and switch element 261,262,263,264.

Frequency controlling element 251,252,253,254 can be metallic circuit (Trace), and frequency controlling element 251,252,253,254 configurations are adjacent to the 3rd spoke sides 2411 at the 4th position 241 of parasitic circuit 240.And frequency controlling element 251,252,253,254 is sequentially arranged with a predeterminable range.For instance, by 2411 beginnings of the 3rd spoke side, the ordering of frequency controlling element is sequentially 251,252,253,254, and wherein aforementioned predeterminable range can be looked the demand Self-adjustment according to the user.

Sequentially successively decrease in the path of frequency controlling element 251,252,253,254 trixenie spoke sides 2411.For instance, the length of frequency controlling element 251〉length of frequency controlling element 252〉length of frequency controlling element 253〉length of frequency controlling element 254.And for example frequency controlling element 251,252,253, an end of 254 connect respectively the 4th position 241 of parasitic circuit 240.

Switch element 261,262,263,264 can be the element of radio-frequency (RF) switch or other similar functions, and switch element 261,262,263,264 is connected between corresponding frequency controlling element 251,252,253,254 the other end and grounding parts 220 in man-to-man mode.For instance, switch element 261 is connected between frequency controlling element 251 and the grounding parts 220, switch element 262 is connected between frequency controlling element 252 and the grounding parts 220, switch element 263 is connected between frequency controlling element 253 and the grounding parts 220, and switch element 264 is connected between frequency controlling element 254 and the grounding parts 220.

Control element 270 rate of connections controlling elements, in order to connect portable electronic devices by digital control circuit 280, to receive the frequency control signal that portable electronic devices was produced (also being outside control signal), and produce according to this a plurality of control signals, with the length of the regulation and control unit 250 of adjusting frequency, and then the resonance frequency of adjustment adjustable antenna module 200.

In the present embodiment, control element 270 comprises digital control circuit 271 and change-over circuit 272.Digital control circuit 271 linking number word control line roads 280 in order to the receive frequency control signal, and convert frequency control signal to logic control signal.Change-over circuit 272 linking number word control circuits 271 and switch element 261,262,263,264, be switch element 171,172,173 control voltage and a plurality of control signal CS1, CS2, CS3 and the CS4 of electric current in order to logic control signal is converted in order to logic control signal is converted to for example, the respectively conducting of control switch element 261,262,263,264 and not conducting, with the 4th position 241 of adjusting parasitic circuit 240 and the length between the grounding parts 120, and then adjust the resonance frequency of adjustable antenna module 200.

For instance, produce respectively the control signal CS1 of high control voltage when the change-over circuit 272 of control element 270 to the control signal CS2 of switch element 264 and low control voltage, CS3, CS4 is to switch element 263,262,261 o'clock, switch element 264 conductings, switch element 263,262,261 not conductings, then to operate in the structure of state 1 (be frequency controlling element 253 to adjustable antenna module 200,252,251 do not connect grounding parts 220, and frequency controlling element 254 connects grounding parts 220), make the 4th position 241 of parasitic circuit 240 connect grounding parts 220 by frequency controlling element 254, so that the 3rd spoke side 2411 operates in the first frequency band range.

Produce respectively the control signal CS2 of high control voltage when the change-over circuit 272 of control element 270 to the control signal CS1 of switch element 263 and low control voltage, CS3, CS4 is to switch element 264,262,261 o'clock, switch element 263 conductings, switch element 264,262,261 not conductings, then to operate in the structure of state 2 (be frequency controlling element 254 to adjustable antenna module 200,252,251 do not connect grounding parts 220, and frequency controlling element 253 connects grounding parts 220), make the 4th position 241 of parasitic circuit 240 connect grounding parts 220 by frequency controlling element 253, so that the 3rd spoke side 2411 operates in the second frequency band range.

Produce respectively the control signal CS3 of high control voltage when the change-over circuit 272 of control element 270 to the control signal CS1 of switch element 262 and low control voltage, CS2, CS4 is to switch element 264,263,261 o'clock, switch element 262 conductings, switch element 264,263,261 not conductings, then to operate in the structure of state 3 (be frequency controlling element 254 to adjustable antenna module 200,253,251 do not connect grounding parts 220, and frequency controlling element 252 connects grounding parts 220), make the 4th position 241 of parasitic circuit 240 connect grounding parts 220 by frequency controlling element 252, so that the 3rd spoke side 2411 operates in the 3rd frequency band range.

Produce respectively the control signal CS4 of high control voltage when the change-over circuit 272 of control element 270 to the control signal CS1 of switch element 261 and low control voltage, CS2, CS3 is to switch element 264,263,262 o'clock, switch element 261 conductings, switch element 264,263,262 not conductings, then to operate in the structure of state 4 (be frequency controlling element 254 to adjustable antenna module 200,253,252 do not connect grounding parts 220, and frequency controlling element 251 connects grounding parts 220), make the 4th position 241 of parasitic circuit 240 connect grounding parts 220 by frequency controlling element 254, so that the 3rd spoke side 2411 operates in the 4th frequency band range.

In the present embodiment, aforementioned the first frequency band range, the second frequency band range, the 3rd frequency band range and the 4th frequency band range are all different, and the range size of frequency band is sequentially the first frequency band range, the second frequency band range, the 3rd frequency band range, the 4th frequency band range.Thus, utilize control switch element 261,262,263,264 conducting or not conductings, so that the 4th position 241 of parasitic circuit 240 is by frequency controlling element 251,252,253, the 254 connection grounding parts 220 of different length, and then the resonance frequency of adjusting adjustable antenna module 200 possesses good multifrequency transmitting-receiving ability toward the low frequency skew so that adjustable antenna module 200 can operate.

In addition, aforementioned digital control circuit 271 can be microcontroller (Microprocessor) or is made of the logical circuit that active member forms, and aforementioned change-over circuit 272 can be comprised of active member and passive device.Aforementioned digital control circuit 280 can be universal input/output bus, inter-integrated circuit bus, general asynchronous transceiver bus or tandem perimeter interface bus.In addition, present embodiment illustrates as example take 4 frequency controlling elements 251,252,253,254 and 4 switch elements 261,262,263,264, but the utility model is not limited to this, implement for example 2,3, more than 5 or 5 with frequency controlling element and switch element that can other quantity.

Please refer to Fig. 5 ~ shown in Figure 8, its adjustable antenna module 100 and 200 that is respectively Fig. 1 and Fig. 3 is via the voltage standing wave ratio after the structured testing that operates in state 1 ~ state 4 (Voltage Standing Wave Ratio, VSWR) numeric distribution figure.In Fig. 5, the 1st is about 0.88GHz, and the 2nd is about 0.96GHz, and the 3rd is about 1.71GHz, and the 4th is about 2.17GHz, and the 5th is about 2.5GHz, and the 6th is about 2.7GHz.Wherein, it the 1st o'clock to the 2nd for example was the frequency band range of the 3rd spoke side 2411 of the first spoke side 1321 of Fig. 1 and Fig. 3, the 3rd o'clock to the 4th for example being the frequency band range of the second spoke side 2331 of the second spoke side 1331 of Fig. 1 and Fig. 3, the 5th o'clock to the 6th for example was the frequency band range of the first spoke side 2321 of the 3rd spoke side 1521 of Fig. 1 and Fig. 3.

In Fig. 6, the 1st is about 0.791GHz, and the 2nd is about 0.894GHz.Wherein, the 1st o'clock to the 2nd for example is the frequency band range of the 3rd spoke side 2411 of the first spoke side 1321 of Fig. 1 and Fig. 3.In Fig. 7, the 1st is about 0.746GHz, and the 2nd is about 0.787GHz.Wherein, the 1st o'clock to the 2nd for example is the frequency band range of the 3rd spoke side 2411 of the first spoke side 1321 of Fig. 1 and Fig. 3.In Fig. 8, the 1st is about 0.704GHz, and the 2nd is about 0.746GHz.Wherein, the 1st o'clock to the 2nd for example is the frequency band range of the 3rd spoke side 2411 of the first spoke side 1321 of Fig. 1 and Fig. 3.

Learn by knowing among the figure, adjustable antenna module 100 of the present utility model and 200 can be utilized and adjust switch element 171,172, the corresponding adjustable antenna module 100 of 173() and switch element 261,262,263, the corresponding adjustable antenna module 200 of 264() conducting or not conducting, so that the resonance frequency of adjustable antenna module 100 and 200 can be toward low frequency skew (for example by the 880MHz of the structure of state 1 704MHz to the structure of state 4), so that but adjustable antenna module 100 and 200 frequency acceptance band scopes, prove thus that this novel adjustable antenna module 100 and 200 possesses the ability of multifrequency transmitting-receiving really at the radio magnetic wave signal of 700MHz to 2700MHz.

Following table 1 ~ table 4 is respectively the antenna performance gain table in actual when test that adjustable antenna module 100 of the present utility model and 200 operates in the structure of state 1, state 2, state 3 and state 4.

The frequency of state 1 (MHz)	The equal yield value of the frequency of state 1 (dBi)
		880	-3.88
900	-3.52
		915	-3.37
925	-4.29
		940	-4.41
960	-5.29
		1710	-3.42
1732	-3.46
		1750	-3.45
1755	-3.61
		1785	-3.41
1805	-3.52
		1840	-2.98
1850	-2.64
		1880	-2.55
1910	-2.68
		1920	-2.86
1930	-2.72
		1950	-2.87
1960	-3.33
		1980	-3.32
1990	-3.49
		2110	-2.86
2132	-4.24
		2140	-4.78

2155	-4.42
		2170	-4.18
2500	-3.67
		2535	-3.79
2570	-3.83
		2620	-4.34
2655	-5.43
		2690	-5.76

Table 1

The frequency of state 2 (MHz)	The equal yield value of the frequency of state 2 (dBi)
		791	-3.87
806	-3.63
		821	-3.53
824	-3.46
		832	-3.57
836	-3.48
		847	-3.75
849	-3.74
		862	-3.97
869	-4.37
		880	-4.35
894	-4.44

Table 2

The frequency of state 3 (MHz)	The equal yield value of the frequency of state 3 (dBi)
		746	-3.78
751	-3.63
		756	-3.69
777	-4.18

782	-4.25
		787	-4.37

Table 3

The frequency of state 4 (MHz)	The equal yield value of the frequency of state 4 (dBi)
		704	-4.27
710	-4.15
		716	-4.16
734	-4.08
		740	-4.36
746	-4.42

Table 4

By provable in table 1 ~ table 4, adjustable antenna module 100 of the present utility model and 200 is under the operating position of different frequency scope, and its yield value is quite good and no problem.

A kind of adjustable antenna module of the present utility model, utilize radial line and parasitic circuit with adjacent mode spread configuration, to form at least three spoke sides of different frequency bands, and a plurality of frequency controlling elements are set, a plurality of switch elements and control element, and utilize control element control switch element conductive and not conducting, to adjust the resonance frequency of adjustable antenna module by the frequency controlling element, and then the resonance frequency of adjusting the adjustable antenna module is offset toward low frequency, so that antenna of the present utility model possesses small size and tool low frequency transmitting-receiving ability, can satisfy the now demand of 4G low frequency communication technology fully.

Certainly; the utility model also can have other various embodiments; in the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the utility model.

Claims

1. An adjustable antenna module, characterized in that, comprising:

a grounding portion;

A radiation line, the radiation line has a first part, a second part and a third part, one end of the first part is connected to the second part, and the other end of the first part has a feed-in part, the One end of the second part is connected to one end of the third part, the other end of the second part and the other end of the third part are respectively a first radiation end and a second radiation end, and the frequency band range of the first radiation end The frequency band ranges of the second radiating end are different from each other;

a short-circuit line, located on one side of the feed-in part, the two ends of the short-circuit line are respectively connected to the feed-in part and the grounding part, and the middle of the short-circuit line presents a curved structure;

A parasitic line, the parasitic line has a fourth part and a fifth part, one end of the fourth part is connected to one end of the fifth part, and the fourth part is adjacent to the other side of the feeding part, the The other end of the fourth part is connected to the ground part, and the other end of the fifth part has a third radiating end, wherein the frequency band range of the third radiating end is different from the frequency band ranges of the first radiating end and the second radiating end. same;

a frequency regulation unit, configured adjacent to the first radiation end, and connected to the ground; and

A control element is connected to the frequency regulation unit and a digital control circuit for receiving a frequency control signal through the digital control circuit and generating multiple control signals to adjust the area of the frequency regulation unit.

2. The adjustable antenna module according to claim 1, further comprising a substrate, the ground portion, the radiation line, the short circuit, the parasitic line, the frequency regulation unit and the control element are formed on the on the substrate.

3 . The adjustable antenna module according to claim 1 , wherein the ground portion is a thin metal sheet, and the curved structure is U-shaped or horseshoe-shaped. 4 .

4. The adjustable antenna module according to claim 1, wherein the frequency control unit comprises:

a plurality of frequency regulating elements arranged adjacent to the first radiation end; and

A plurality of switching elements, one of the plurality of switching elements is connected between the ground portion and one of the plurality of frequency regulation elements, and the remaining plurality of switching elements are connected between one of the plurality of frequency regulation elements and the remaining Between the multiple frequency regulating elements.

5 . The adjustable antenna module according to claim 4 , wherein the plurality of frequency regulating elements are metal pads, and the plurality of switching elements are radio frequency switches.

6. The adjustable antenna module according to claim 4, wherein the control element comprises:

A digital control circuit, connected to the digital control circuit, is used to receive the frequency control signal and convert the frequency control signal into a logic control signal; and

A conversion circuit, connected to the digital control circuit and the plurality of switching elements, for converting the logic control signal into the plurality of control signals, so as to control the conduction and non-conduction of the plurality of switching elements, and then adjust the frequency The area of the control element.

7. The adjustable antenna module according to claim 6, wherein the digital control circuit is a microprocessor or a logic circuit composed of active components.

8. The adjustable antenna module according to claim 6, wherein the conversion circuit is composed of active components and passive components.

9. The adjustable antenna module according to claim 1, wherein the frequency control circuit is a Universal Input/Output Bus, an Inter-Integrated Circuit Bus, a Universal Asynchronous Transceiver Bus or a Serial Peripheral Interface Bus.

10. An adjustable antenna module, comprising:

a grounding portion;

A radiation line, the radiation line has a first part, a second part and a third part, one end of the first part is connected to the second part, and the other end of the first part has a feed-in part, the One end of the second part is connected to one end of the third part, the third part has a curved structure, the other end of the second part and the other end of the third part are respectively a first radiating end and a second radiating end , and the frequency band range of the first radiation end is different from the frequency band range of the second radiation end;

A parasitic line, the parasitic line has a fourth part, one end of the fourth part is adjacent to one end of the second part, and the other end of the fourth part has a third radiating end, wherein the third radiating end The frequency band range is different from the frequency band ranges of the first radiating end and the second radiating end;

a frequency control unit configured adjacent to the third radiation end and connected between the fourth part and the ground part; and

A control element is connected to the frequency control unit and a digital control circuit for receiving a frequency control signal through the digital control circuit and generating multiple control signals to adjust the length of the frequency control unit.

11 . The adjustable antenna module according to claim 10 , further comprising a substrate, the ground portion, the radiation line, the parasitic line, the frequency regulation unit and the control element are formed on the substrate.

12 . The adjustable antenna module according to claim 10 , wherein the ground portion is a thin metal sheet, and the curved structure is U-shaped. 13 .

13. The adjustable antenna module according to claim 10, wherein the frequency regulation unit comprises:

A plurality of frequency regulation elements arranged adjacent to the third radiating end, and the plurality of frequency regulation elements are arranged sequentially at a preset distance, and the lengths of the plurality of frequency regulation elements are sequentially decreased from the third radiating end , one end of the frequency regulation element is connected to the fourth site; and

A plurality of switching elements are connected between the other ends of the corresponding plurality of frequency regulating elements and the ground part in a one-to-one manner.

14. The adjustable antenna module according to claim 13, wherein the plurality of frequency regulating elements are metal lines, and the plurality of switching elements are radio frequency switches.

15. The adjustable antenna module according to claim 13, wherein the control element comprises:

16. The adjustable antenna module according to claim 15, wherein the digital control circuit is a microprocessor or a logic circuit composed of active components.

17. The adjustable antenna module according to claim 15, wherein the conversion circuit is composed of active components and passive components.

18. The adjustable antenna module according to claim 10, wherein the frequency control circuit is a Universal Input/Output Bus, an Inter-Integrated Circuit Bus, a Universal Asynchronous Transceiver Bus or a Serial Peripheral Interface Bus.