CN203216989U - Non-contact test system of RFID tag antenna - Google Patents
Non-contact test system of RFID tag antenna Download PDFInfo
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- CN203216989U CN203216989U CN 201320218374 CN201320218374U CN203216989U CN 203216989 U CN203216989 U CN 203216989U CN 201320218374 CN201320218374 CN 201320218374 CN 201320218374 U CN201320218374 U CN 201320218374U CN 203216989 U CN203216989 U CN 203216989U
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Abstract
The utility model discloses a non-contact test system of an RFID tag antenna. The non-contact test system of the RFID tag antenna comprises a display unit, a data processing and control unit, an RF signal sending/receiving unit, a feeding mechanism unit and a test antenna unit, wherein the data processing and control unit is respectively connected with the display unit, the RF signal sending/receiving unit and the feeding mechanism unit, and the test antenna unit is connected with the RF signal sending/receiving unit. By adopting the non-contact test, the RFID tag antenna can be tested without binding a chip, thus the chip loss is reduced, the labor intensity of testing personnel is decreased, the error testing rate and missing testing rate are low, the automatic testing can be realized, the testing efficiency is high, and the indirect measurement of electrical property can be realized. The non-contact test system of the RFID tag antenna can realize automated testing easily, greatly reduces the requirements for mechanical structure, and is very suitable for production testing of large batch.
Description
Technical field
The utility model relates to the field tests technical field of REID, particularly a kind of system that the RFID label antenna is tested.
Background technology
The RFID full name is radio-frequency (RF) identification (Radio Frequency Identification), is a kind of non-contact automatic identification technology that utilizes radio-frequency technique to realize.The RFID label has that volume is little, read or write speed is fast, shape is various, long service life, reusable, memory capacity big, can penetrate characteristics such as non-conductive material, multiple goal identification and moving target identification can be realized in conjunction with the RFID read write line, further the tracking of article in the global range and sharing of information can also be realized by the combination with Internet technology.The RFID technology is applied to industries such as logistics, manufacturing, public information service, can significantly improve management and operational paradigm, reduces cost.
The RFID technology has become the focus in IT field at present, and numerous mechanisms and enterprise are all wideling popularize this technology.Along with the develop rapidly of RFID technology, the manufacturer of Related product increases gradually, and the kind of RFID label has also risen to hundreds of, and is constantly releasing new product.In order in various RFID label, to select can satisfy the product of user's demand, just need carry out special test to the performance index of RFID product, the consistance of RFID label antenna namely is one of important performance indexes of RFID label product.RFID label antenna consistance refers to that for a electronic tag because the electromagnetic performance otherness between the different samples that factors such as manufacturing process, machining precision cause, otherness is more little, and then consistance is more strong.
Use more and more widely in the market of RFID label, and the demand of label antenna is also increased substantially thereupon, and as communication and the energy receiver part of electronic tag, the quality of antenna directly has influence on the performance of label.The detection method of antenna mainly contains four kinds at present, and first kind is reviewer's visual inspection, and second kind is Machine Vision Detection, and the third is that nation decides to do the electrical property detection behind the chip, and the 4th kind is to use probe Meter Test electrical property.Manual Visual Inspection has the following disadvantages: visual detection mode reviewer's working strength is big; The eyes fatiguability; False retrieval, loss height; Checkability is low.Machine vision has the following disadvantages: can't measure electrical property; Resolution requirement to camera is very high, especially at antenna live width or distance between centers of tracks hour; Can't measure the connection impedance of punching press bridging measures; Not easy to identify to the overlapping position of blocking of aluminium foil.Nation decides to measure behind the chip and has the following disadvantages: cause the proportion of goods damageds of chip to raise, since the chip price height, the price of the far super antenna of the bad waste that causes of antenna itself.The probe instrument detects and has the following disadvantages: the impedance of probe self, probe contact impedance, instrument output impedance influence test result; Cause the probe loose contact for aluminum antenna easily because of surface compact oxidation layer; Antenna nation fixed position is little, the little probe location difficulty of spacing; Stay ugly vestige easily at the probe contact position and influence the antenna outward appearance; Because of the efficient of the high influence test of positioning requirements, and the cost height of accurate detent mechanism.
The utility model content
The purpose of this utility model is the deficiency that exists at RFID label antenna detection method in the prior art, provides a kind of and can simply, effectively judge whether qualified test macro and method of testing of label antenna.
To achieve these goals, the utility model provides a kind of non-contact testing system of RFID label antenna, comprising: display unit: be used for showing test results and corresponding data, figure, as the interface of man-machine interaction; Data are handled and control module: be used for configuration and the control of other functional module, sampling, store test data, computational data, judgement test result; The unit is sent out/received to radiofrequency signal: the radiofrequency signal that is used for producing on request the certain limit that can cover tested antenna self-resonant frequency under control module control, and amplify radiofrequency signal to the performance number of appointment, drive test antenna unit emitting radio frequency signal, receive from the feedback signal of the tested antenna of test antenna unit and amplify; Test antenna unit: be used for that the high-frequency signal that this locality after the power amplification produces is transformed into electromagnetic field and send to tested antenna, reception is from the signal of tested antenna, signal frequency according to emission under the control of control module changes the frequency tuning that carries out antenna, carries out the Antenna Impedance Matching adjustment simultaneously;
The feed mechanism unit: under the control of data processing and control module tested antenna is sent to test position, the defective antenna that test is found identifies; Wherein said data are handled with control module and are sent driver element with display unit, radiofrequency signal respectively, the feed mechanism unit links to each other, and the test antenna unit is sent out/received the unit and links to each other with radiofrequency signal.
Described data are handled and are comprised with control module: control module: for configuration, the control of other functional module and communicate by letter; Data processing unit: be used for data sampling, data conversion, store test data, computational data, judgement test result.
Described feed mechanism unit comprises: mechanical mechanism: carry out the antenna feeding, locate, guarantee to stablize the physical construction of tension force and deviation; Feeding control: after the instruction of accepting control module, be responsible for the working control to mechanical mechanism; Defective products Automatic Logos: provide corresponding acousto-optic hint after each antenna measurement is finished, bad antenna is stamped beautiful the differentiation automatically.
Described radiofrequency signal is sent out/received the unit and comprises: the radiofrequency signal generation unit: generation can cover the radiofrequency signal of the certain limit of tested antenna self-resonant frequency; Radiofrequency signal power amplification unit: amplify radiofrequency signal to the performance number of appointment, drive test antenna unit emitting radio frequency signal; Signal receives amplifying unit: receive from the feedback signal of the tested antenna of test antenna unit and amplify, send data processing unit to handle.
Described test antenna unit comprises: the electric tuning matching network: be used for carrying out according to the signal frequency variation of emission the frequency tuning of antenna under the control of control module, carry out the Antenna Impedance Matching adjustment simultaneously; Test antenna: be used for that the high-frequency signal that this locality after the power amplification produces is transformed into electromagnetic field and send to tested antenna, receive the signal from tested antenna.
Be provided with notch diplexer between described radiofrequency signal power amplification unit and the electric tuning matching network, be used for isolating the receiving and transmitting signal passage, radiofrequency signal is sent to antenna after making power amplification, the back-scattered signal from tested antenna that antenna is received is sent to receiving signal amplifier, the realization dual-mode antenna shares, and guarantees that receiving and transmitting signal meets the requirements of isolation.
Described electric tuning matching network is the varactor network, and described notch diplexer is circulator.
Described display unit and control module can adopt computer, and the computer expert crosses gpib bus and connects radiofrequency signal transmission driver element; Perhaps control module adopts microprocessor or PLC Programmable Logic Controller, and display unit adopts LCD, and LCD is by SPI, I
2C or RS232 communication port connect microprocessor, and microprocessor is by SPI, I
2C or parallel port connect radiofrequency signal and send out/receive the unit.
The non-contact type test method of RFID label antenna may further comprise the steps:
(1) control module control radiofrequency signal generation unit produces assigned frequency, range signal, and the radiofrequency signal power amplification unit carries out power amplification with the radiofrequency signal that signal generating unit produces;
(2) control module control electric tuning matching network is operated on the frequency identical with the signal generator signal test antenna;
(3) amplifying signal is transmitted to tested antenna by test antenna, or the process notch diplexer is transmitted to tested antenna, the signal that tested antenna feeds back receives via test antenna, the amplitude of the detection signal after signal receives the amplifying unit amplification of the signal after the reception;
(4) control module reads the final value that the range value that receives signal stored and judged whether to reach test frequency, if do not reach the final value of test frequency, then revise test frequency according to step-length, repeating step 1 is to step 4, until the final value that reaches test frequency;
(5) after finishing frequency final value test, reception signal amplitude value and the normal data of each frequency of storing are done contrast, receive signal magnitude data in the error range of stipulating as each, then tested antenna is qualified.
(6) receive the error range that signal magnitude data has exceeded regulation as each, then tested antenna is defective, control module sends instruction to display unit, and display unit shows test results, sends the acousto-optic indication, and control module control feed mechanism is done sign at defective antenna;
(7) control module judges whether that whole tested antennas have surveyed, and as not testing, control module sends instruction to feed mechanism, and feed mechanism is delivered to test position with the tested antenna of the next one, and beginning step 1 is to the next round test of step 6;
(8) surveyed as whole tested antennas, data processing unit is added up test data, and control module control display unit shows the data statistics result, and provides sound and light signal prompting test and all finish.
Usually there is a self-resonant frequency in antenna, and this frequency and antenna structure, size are closely related.Scale error in manufacture process, short circuit, open circuit, metal residue etc. all can cause changes in antenna impedance, thereby cause the variation of antenna self-resonant frequency or the variation of Q value.Send the swept-frequency signal of the certain limit comprise tested antenna self-resonant frequency by test antenna, just can judge by detecting the signal that tested antenna feeds back to test antenna whether tested antenna is qualified.
Be high frequency (HF) antenna for tested antenna, the feedback signal of detection is the impedance variation that is coupled to the test days line end.Be ultrahigh frequency (UHF) antenna for tested antenna, the feedback signal of detection is long-pending (RCS) signal of the RCS of tested antenna.Being received in these feedback signal data in the swept frequency range and standard value just compares and can obtain testing result.
The simple effective ways that obtain the tested antenna standard value of every money are a qualified antenna to be tested obtain, or get the mean value of a combination lattice antenna, can be by the testing apparatus method acquisition of study automatically.
Advantage of the present utility model and beneficial effect: the working strength that reduces the reviewer; False retrieval, loss are low; Can realize that robotization detects the detection efficiency height; Can realize the indirect measurement to electrical property; Can realize the measurement to the bridging function; Applicable to the overlapping measurement of blocking antenna of aluminium foil; Do not need to bind chip (IC) and just can test, reduced the loss of chip; Adopt non-contact testing, probe impedance, contact impedance, instrument impedance influences; Compare the requirement that has reduced the detent mechanism precision with probing test; Compare with probe test avoided because of contacting of causing of aluminum antenna oxide layer unreliable; Do not compare and can the outward appearance of antenna be impacted with probe test.
In the utility model, needn't in advance chip (IC) be tied on the tested antenna, especially the manufacturer that is fit to radio-frequency (RF) identification (RFID) label antenna, no matter be antenna to be inspected by random samples or examined all entirely be fit to, the manufacturing enterprise of electronic tag (Inlay) also can be used as the means of testing of Incoming Quality Control.
Description of drawings
Fig. 1 is the synoptic diagram of the non-contact testing system of the utility model RFID label antenna.
Fig. 2 is the structural representation of the concrete unit of non-contact testing system of the utility model RFID label antenna.
Fig. 3 is the equipment synoptic diagram of the utility model embodiment one.
Fig. 4 is the equipment synoptic diagram of the utility model embodiment two.
Fig. 5 is the equipment synoptic diagram of the utility model embodiment three.
Fig. 6 is the equipment synoptic diagram of the utility model embodiment four.
Fig. 7 is the resonance frequency analogous diagram of high frequency (HF) standard card antenna when chip is arranged.
Self-resonant frequency analogous diagram when Fig. 8 is high frequency (HF) standard card antenna chipless.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Be the synoptic diagram of the non-contact testing system of the utility model RFID label antenna as shown in Figure 1, Fig. 2 is the structural representation of the concrete unit of test macro.The non-contact testing system of RFID label antenna comprises that display unit, data processing and control module, radiofrequency signal send out/receive unit, feed mechanism unit and test antenna unit, data are handled with control module and are sent driver element with display unit, radiofrequency signal respectively, the feed mechanism unit links to each other, and the test antenna unit is sent out/received the unit and links to each other with radiofrequency signal.Data are handled with control module and are comprised control module and data processing unit.Radiofrequency signal is sent out/is received the unit and comprises that radiofrequency signal generation unit, radiofrequency signal power amplification unit and signal receive amplifying unit.The test antenna unit comprises electric tuning matching network and test antenna.The feed mechanism unit comprises mechanical mechanism, feeding control and defective products Automatic Logos.
According to the kind difference of tested antenna, introduce the non-contact type test method of label antenna respectively.
Embodiment one:
Tested antenna is RFID high frequency (HF) antenna, by the computer of band GPIB general purpose instrument interface bus as control and display unit.The computer expert crosses gpib bus and communicates by letter with radio-frequency signal generator, digital voltmeter with the belt transect gpib interface.
Radio-frequency signal generator and digital voltmeter are connected to computer through the GPIB cable and receive program control order, send the data to computer, and the computer expert crosses gpib bus and sends the radiofrequency signal that instruction produces assigned frequency and amplitude to radio-frequency signal generator.
The broadband rf signal power amplifier carries out power amplification with the signal that radio-frequency signal generator produces, the computer expert crosses serial communication port and controls tuning match circuit, make the frequency of antenna resonant frequency and radio-frequency signal generator identical, tuning match circuit module uses varactor as tuned cell, change the varactor bias voltage and realize the frequency adjustment of antenna, the radiofrequency signal after the power amplification sends to tested RFID high frequency (HF) antenna through aerial coil.
The test antenna coil is coupled in the impedance of tested antenna, make the radiofrequency signal voltage at test coil two ends with load variations, the signal voltage at coil two ends is delivered to the radiofrequency signal detection after receiving signal amplifier amplifies, obtain the range value of signal, digital voltmeter is measured the signal amplitude value after the detection.
The computer expert crosses the measurement data that gpib bus reads digital voltmeter, revises test frequency at interval according to sample frequency, repeats above-mentioned steps until the frequency range that requires, and obtains one group of measurement data.
The measurement data and the normal data that obtain are judged relatively whether tested antenna is qualified, show test results and draw test curve at computer monitor.Along with the tested antenna of the variation of signal frequency is coupled to impedance in the test antenna coil along with change, near tested antenna self-resonant frequency the time, be coupled to the impedance marked change in the test antenna coil, the voltage at coil two ends is obviously changed.
Computer adopts RS232, RS485, USB or Ethernet with communicating by letter of other component units.
Embodiment two:
Tested antenna is RFID ultrahigh frequency (UHF) antenna, and as control and display unit, the computer expert crosses gpib bus and communicates by letter with microwave radio signal generator, digital voltmeter with the belt transect gpib interface by the computer of being with GPIB general purpose instrument interface bus.
Microwave radio signal generator and digital voltmeter are connected to computer through the GPIB cable and receive program control order, send the data to computer, the computer expert crosses gpib bus and sends the high-frequency signal that instruction produces assigned frequency and amplitude to the microwave radio signal generator, wide-band microwave radiofrequency signal power amplifier carries out power amplification with the signal that the microwave radio signal generator produces, the computer expert crosses serial communication port and controls tuning match circuit, make antenna resonant frequency identical with the frequency of microwave radio signal generator, the electric tuning matching network uses varactor as tuned cell, change the varactor bias voltage and realize the frequency adjustment of antenna, microwave radio signal after the power amplification is loaded into test antenna by circulator, and is transmitted to tested RFID ultrahigh frequency (UHF) antenna.
The RCS back-scattered signal size of tested antenna is difference along with the variation of the signal frequency of microwave radio signal generator generation.Test antenna receives the RCS back-scattered signal of tested antenna and send into wideband low noise receiving signal amplifier (LNA) amplification behind circulator, the output signal of wideband low noise receiving signal amplifier (LNA) obtains to receive signal intensity indication (RSSI) voltage after detection, measured by digital voltmeter and receive signal intensity indication (RSSI) magnitude of voltage.
The computer expert crosses the measurement data that gpib bus reads digital voltmeter, revise test frequency at interval according to sample frequency, repeat above-mentioned steps until the frequency range that requires, obtain one group of measurement data, the measurement data and the normal data that obtain are judged relatively whether tested antenna is qualified, show test results and draw test curve at computer monitor.
Along with the size of the back-scattered signal (RCS) of the tested antenna of variation of microwave radio signal frequency along with change, the size of back-scattered signal (RCS) can produce marked change near tested antenna self-resonant frequency the time.
Computer adopts RS232, RS485, USB or Ethernet with communicating by letter of other component units.
Embodiment three:
Tested antenna is RFID high frequency (HF) antenna, controlled the work of each module as central control unit by microprocessor (MCU), the TTF LCD is connected to microprocessor (MCU) by SPI, I2C or RS232 communication port and shows data, test result, and the SD storage card is connected to microprocessor and is used for store test data and configuration data.
Microprocessor (MCU) is by SPI, I
2C or parallel port synthetic (DDS) radio-frequency signal generator module of control Direct Digital produce the assigned frequency signal, the broadband rf signal power amplifier carries out power amplification with the radiofrequency signal that Direct Digital synthetic (DDS) produces, microprocessor (MCU) control digital-to-analogue (D/A) modular converter is exported accurate voltage as the biasing of varactor, and antenna is tuned on the frequency of synthetic (DDS) radiofrequency signal of Direct Digital.
Radiofrequency signal after power amplification aerial coil after tested sends to tested RFID high frequency (HF) antenna, the test antenna coil is coupled in the impedance of tested antenna, make the radiofrequency signal voltage at test coil two ends with load variations, the signal voltage at test antenna coil two ends is delivered to the radiofrequency signal detection after signal receiving amplifier amplifies, obtain the range value of signal.
Signal amplitude value after the detection send microprocessor (MCU) to handle after modulus (A/D) conversion, the data that microprocessor (MUC) reads after modulus (A/D) conversion are stored in internal RAM or the SD storage card, revise test frequency at interval according to sample frequency, repeat above-mentioned steps until the frequency range that requires, obtain one group of measurement data, the measurement data and the normal data that obtain are judged relatively whether tested antenna is qualified.
Show test results and draw test curve at the TTF display screen, alarm provides acousto-optic hint with indicating module according to the result who detects, and antenna coiled material feed mechanism is delivered to the tested RFID high frequency of the next one (HF) antenna test position and tested next time.
Along with the tested antenna of the variation of radio frequency signal frequency is coupled to impedance in the test antenna coil along with change, near tested antenna self-resonant frequency the time, be coupled to the impedance marked change in the test antenna coil, the voltage at coil two ends is obviously changed.
Microprocessor adopts SPI, I with communicating by letter of other module
2C or parallel port.
Embodiment four:
Tested antenna is RFID ultrahigh frequency (UHF) antenna, controls the work of each module by microprocessor (MCU) as central control unit, and the TTF LCD is by SPI, I
2C or RS232 communication port are connected to microprocessor (MCU) and show data, test result, and the SD storage card is connected to microprocessor and is used for store test data and configuration data.
Microprocessor (MCU) is by SPI, I
2C or parallel port control microwave sweep signal generation module produce the assigned frequency signal, the wide-band microwave signal power amplifier carries out power amplification with the microwave signal that microwave sweep signal generation module produces, microprocessor (MCU) control digital-to-analogue (D/A) modular converter is exported accurate voltage as the biasing of varactor, and test antenna is tuned on the signal frequency of microwave sweep signal generation module generation.
Microwave signal after the power amplification is sent to electric tuning match circuit module through circulator, be transmitted to tested ultrahigh frequency (UHF) antenna by test antenna, the RCS back-scattered signal size of tested antenna is difference along with the variation of the signal frequency of microwave sweep signal generation module.
Test antenna receives the RCS back-scattered signal of tested antenna and send into wideband low noise reception amplifier (LNA) amplification behind circulator, the output signal of wideband low noise receiving signal amplifier (LNA) obtains to receive signal intensity indication (RSSI) voltage after detection, signal amplitude value after the detection send microprocessor (MCU) to handle after modulus (A/D) conversion, and the data that microprocessor (MUC) reads after modulus (A/D) conversion are stored in internal RAM or the SD storage card.
Revise test frequency at interval according to sample frequency, repeat above-mentioned steps until the frequency range that requires, obtain one group of measurement data, the measurement data and the normal data that obtain are judged relatively whether tested antenna is qualified.
Show test results and draw test curve at the TTF display screen, alarm provides acousto-optic hint with indicating module according to the result who detects, and antenna coiled material feed mechanism is delivered to the tested RFID ultrahigh frequency of the next one (UHF) antenna test position and tested next time.
Along with the size of the back-scattered signal (RCS) of the tested antenna of variation of frequency test signal along with change, the size of back-scattered signal (RCS) can produce marked change near tested antenna self-resonant frequency the time.
Microprocessor adopts SPI, I with communicating by letter of other module
2C or parallel port.
Fig. 7 is the resonance frequency analogous diagram of high frequency (HF) standard card antenna when chip is arranged, self-resonant frequency analogous diagram when Fig. 8 is high frequency (HF) standard card antenna chipless, comparison diagram 7 and Fig. 8 shape of the frequency characteristic of RFID high frequency (HF) antenna when nation decides chip and do not have the chip self-resonance as can be known are identical, the electrical property in the time of can measuring the work of antenna microarray strip indirectly by the self-resonant frequency characteristic.
Self-resonant frequency characteristic for RFID ultrahigh frequency (UHF) antenna is complicated, shape can be not identical, but the self-resonant frequency characteristic of passing through to obtain qualified antenna compares with test data as reference, also can finish indirectly the electrical property of antenna is measured.
Though the utility model with preferred embodiment openly as above; but embodiment and accompanying drawing are not to limit the utility model; anyly be familiar with this skill person; in the spirit and scope that do not break away from the utility model; can do various variations or retouching from working as, but equally within protection domain of the present utility model.What therefore protection domain of the present utility model should be defined with the application's claim protection domain is as the criterion.
Claims (9)
1. the non-contact testing system of a RFID label antenna is characterized in that comprising:
Display unit: be used for showing test results and corresponding data, figure, as the interface of man-machine interaction;
Data are handled and control module: be used for configuration and the control of other functional module, sampling, store test data, computational data, judgement test result;
The unit is sent out/received to radiofrequency signal: the radiofrequency signal that is used for producing on request the certain limit that can cover tested antenna self-resonant frequency under control module control, and amplify radiofrequency signal to the performance number of appointment, drive test antenna unit emitting radio frequency signal, receive from the feedback signal of the tested antenna of test antenna unit and amplify;
Test antenna unit: be used for that the high-frequency signal that this locality after the power amplification produces is transformed into electromagnetic field and send to tested antenna, reception is from the signal of tested antenna, signal frequency according to emission under the control of control module changes the frequency tuning that carries out antenna, carries out the Antenna Impedance Matching adjustment simultaneously;
The feed mechanism unit: under the control of data processing and control module tested antenna is sent to test position, the defective antenna that test is found identifies;
Wherein said data are handled with control module and are sent driver element with display unit, radiofrequency signal respectively, the feed mechanism unit links to each other, and the test antenna unit is sent out/received the unit and links to each other with radiofrequency signal.
2. the non-contact testing system of RFID label antenna according to claim 1 is characterized in that described data are handled with control module to comprise:
Control module: be used for configuration, control and the communication of other functional module;
Data processing unit: be used for data sampling, data conversion, store test data, computational data, judgement test result.
3. the non-contact testing system of RFID label antenna according to claim 1 is characterized in that described feed mechanism unit comprises:
Mechanical mechanism: carry out the antenna feeding, locate, guarantee to stablize the physical construction of tension force and deviation;
Feeding control: after the instruction of accepting control module, be responsible for the working control to mechanical mechanism;
Defective products Automatic Logos: provide corresponding acousto-optic hint after each antenna measurement is finished, bad antenna is stamped beautiful the differentiation automatically.
4. the non-contact testing system of RFID label antenna according to claim 1 is characterized in that described radiofrequency signal sends out/receive the unit and comprise:
The radiofrequency signal generation unit: generation can cover the radiofrequency signal of the certain limit of tested antenna self-resonant frequency;
Radiofrequency signal power amplification unit: amplify radiofrequency signal to the performance number of appointment, drive test antenna unit emitting radio frequency signal;
Signal receives amplifying unit: receive from the feedback signal of the tested antenna of test antenna unit and amplify, send data processing unit to handle.
5. the non-contact testing system of RFID label antenna according to claim 4 is characterized in that described test antenna unit comprises:
Electric tuning matching network: be used under the control of control module, carrying out according to the signal frequency variation of emission the frequency tuning of antenna, carry out the Antenna Impedance Matching adjustment simultaneously;
Test antenna: be used for that the high-frequency signal that this locality after the power amplification produces is transformed into electromagnetic field and send to tested antenna, receive the signal from tested antenna.
6. the non-contact testing system of RFID label antenna according to claim 5, it is characterized in that: be provided with notch diplexer between described radiofrequency signal power amplification unit and the electric tuning matching network, be used for isolating the receiving and transmitting signal passage, radiofrequency signal is sent to antenna after making power amplification, the back-scattered signal from tested antenna that antenna is received is sent to receiving signal amplifier, the realization dual-mode antenna shares, and guarantees that receiving and transmitting signal meets the requirements of isolation.
7. the non-contact testing system of RFID label antenna according to claim 6, it is characterized in that: described electric tuning matching network is the varactor network.
8. the non-contact testing system of RFID label antenna according to claim 7, it is characterized in that: described notch diplexer is circulator.
9. the non-contact testing system of RFID label antenna according to claim 1, it is characterized in that: described display unit and control module can adopt computer, and the computer expert crosses gpib bus and connects radiofrequency signal and send out/receive the unit; Perhaps control module adopts microprocessor or PLC Programmable Logic Controller, and display unit adopts LCD, and LCD is by SPI, I
2C or RS232 communication port connect microprocessor, and microprocessor is by SPI, I
2C or parallel port connect radiofrequency signal and send out/receive the unit.
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| CN 201320218374 CN203216989U (en) | 2013-04-26 | 2013-04-26 | Non-contact test system of RFID tag antenna |
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| CN 201320218374 CN203216989U (en) | 2013-04-26 | 2013-04-26 | Non-contact test system of RFID tag antenna |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267911A (en) * | 2013-04-26 | 2013-08-28 | 苏州德诚物联科技有限公司 | Non-contact test system and method of RFID label antenna |
| CN104614595A (en) * | 2015-02-12 | 2015-05-13 | 哈尔滨工业大学 | Non-contact Measurement Method of Natural Frequency and Quality Factor of Resonant Coil |
| CN104897978A (en) * | 2014-03-05 | 2015-09-09 | 汤姆逊许可公司 | Electrical activity sensor device for detecting electrical activity and electrical activity monitoring apparatus |
| CN105101032A (en) * | 2015-08-27 | 2015-11-25 | 深圳市音沃仕科技有限公司 | Acoustic testing method for electroacoustic transducer compound antenna module |
| CN109660304A (en) * | 2017-10-10 | 2019-04-19 | 川升股份有限公司 | Artificial intelligence Antenna Design platform |
-
2013
- 2013-04-26 CN CN 201320218374 patent/CN203216989U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103267911A (en) * | 2013-04-26 | 2013-08-28 | 苏州德诚物联科技有限公司 | Non-contact test system and method of RFID label antenna |
| CN103267911B (en) * | 2013-04-26 | 2015-08-12 | 苏州德诚物联科技有限公司 | The non-contact testing system and method for RFID label antenna |
| CN104897978A (en) * | 2014-03-05 | 2015-09-09 | 汤姆逊许可公司 | Electrical activity sensor device for detecting electrical activity and electrical activity monitoring apparatus |
| CN104614595A (en) * | 2015-02-12 | 2015-05-13 | 哈尔滨工业大学 | Non-contact Measurement Method of Natural Frequency and Quality Factor of Resonant Coil |
| CN105101032A (en) * | 2015-08-27 | 2015-11-25 | 深圳市音沃仕科技有限公司 | Acoustic testing method for electroacoustic transducer compound antenna module |
| CN109660304A (en) * | 2017-10-10 | 2019-04-19 | 川升股份有限公司 | Artificial intelligence Antenna Design platform |
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