CN202424728U - Multi-antenna measuring system based on network analysis instrument and radio-frequency switch - Google Patents
Multi-antenna measuring system based on network analysis instrument and radio-frequency switch Download PDFInfo
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- CN202424728U CN202424728U CN2011205285305U CN201120528530U CN202424728U CN 202424728 U CN202424728 U CN 202424728U CN 2011205285305 U CN2011205285305 U CN 2011205285305U CN 201120528530 U CN201120528530 U CN 201120528530U CN 202424728 U CN202424728 U CN 202424728U
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Abstract
The utility model relates to a multi-antenna measuring system based on a network analysis instrument and a radio-frequency switch. The radio-frequency switch in a time domain platform is effectively combined with the network analysis instrument in a frequency domain platform. On the premise of having the measurement advantages of the frequency domain, the multi-antenna measuring system can realize unmanned measurement by utilizing the remote control to avoid the manmade interference in the measuring process, and also can realize the automatic measurement on the basis of a labview software platform to effectively improve the measuring efficiency.
Description
Technical field
The present invention relates to a kind of multi-antenna channel measuring system, relate in particular to many antenna measurement systems of a kind of Excavation Cluster Based on Network Analysis appearance and RF switch.
Background technology
Existing wireless communications channel measurement platform mainly comprises two kinds on time domain measurement platform and frequency domain measurement platform.Than the time domain measurement platform, the frequency domain measurement platform has that to measure bandwidth big, and signal to noise ratio is high, characteristics such as be easy to adopt that the laboratory all purpose instrument is built.In the prior art, the frequency domain measurement platform of Excavation Cluster Based on Network Analysis appearance is used for multi-antenna channel to be measured, but this measurement adopts manual mode that antenna is switched usually, and efficiency of measurement is low, real-time is poor.
Summary of the invention
The technical problem that the present invention solves is: make up many antenna measurement systems of a kind of Excavation Cluster Based on Network Analysis appearance and RF switch, overcome that the prior art efficiency of measurement is low, real-time difference and the technical problem of using inconvenience.
Technical scheme of the present invention is: the many antenna measurement systems that make up a kind of Excavation Cluster Based on Network Analysis appearance and RF switch; Comprise the vector network analyzer that carries out Measurement and analysis, RF switch, a plurality of transmitting antenna, a plurality of reception antenna that carries out the channel switching; Said RF switch comprises connection said a plurality of transmitting antenna first RF switches and second RF switch that is connected said a plurality of reception antennas; Said vector network analyzer connects said transmitting antenna and sends measuring-signal to said transmitting antenna through said first RF switch; Said vector network analyzer connects said reception antenna through said second RF switch and receives the measuring-signal that said reception antenna is received; Said first RF switch travels through successively and switches said transmitting antenna; Said second RF switch travels through the said reception antenna of switching successively, and said vector network analyzer receives amplitude response and the phase response that measuring-signal is measured wireless channels all between said transmitting antenna and the said reception antenna successively through the said reception antenna that the said transmitting antenna that switches sends measuring-signal and switching.
Further technical scheme of the present invention is: said RF switch comprises the control unit that the multichannel antenna is carried out switching controls.
Further technical scheme of the present invention is: said control unit comprises power module, signal conversion module and the multichannel antenna is carried out the control module of switching controls that said control module adopts Transistor-Transistor Logic level to control the conducting and the disconnection of corresponding output port of said first RF switch and the corresponding input port of said second RF switch.
Further technical scheme of the present invention is: said multi-antenna channel measuring system comprises that also to alignment unit, said alignment unit is calibrated the frequency response between wireless channel.
Further technical scheme of the present invention is: said multi-antenna channel measuring system also comprises through said RF switch controls the computer that said transmitting antenna switches and said reception antenna switches.
Technical scheme of the present invention is: the many antenna measurements method that makes up a kind of Excavation Cluster Based on Network Analysis appearance and RF switch; Comprise the vector network analyzer that carries out Measurement and analysis, a plurality of transmitting antenna, a plurality of reception antenna; Transmitting antenna is switched the RF switch that switches with reception antenna, and said channel measuring method comprises the steps:
Send swept-frequency signal: vector network analyzer sends swept-frequency signal through said transmission antennas transmit;
The receiving frequency-sweeping signal: swept-frequency signal receives through said reception antenna, sends into said vector network analyzer then;
Measured channel: said vector network analyzer is measured the amplitude response and the phase response of the wireless channel of said transmitting antenna and said reception antenna;
Traversal switched antenna: travel through said transmitting antenna of switching and said reception antenna successively through said RF switch; Repeat the step of above-mentioned transmission swept-frequency signal, receiving frequency-sweeping signal, measured channel behind each the switching, up to amplitude response and the phase response of measuring all transmitting antennas and all reception antennas wireless channel between any two.
Further technical scheme of the present invention is: also comprise computer, the said reception antenna that the said RF switch of said computer control switches and switch said transmitting antenna.
Further technical scheme of the present invention is: also comprise the frequency response of wireless channel is calibrated.
Technique effect of the present invention is: wireless many antenna measurement systems of this patent Excavation Cluster Based on Network Analysis appearance and RF switch; Network analyzer in RF switch in the time domain platform and the frequency domain platform is effectively combined; This system can utilize Long-distance Control to realize unmanned the measurement under the prerequisite that possesses the frequency domain measurement advantage on the one hand, avoids the artificial disturbance in the measuring process; Can realize measuring automatically based on the labview software platform on the other hand, effectively improve efficiency of measurement.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the structural representation of control unit of the present invention.
Fig. 3 is a flow chart of the present invention
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is further specified.
As shown in Figure 1; Embodiment of the present invention is: the many antenna measurement systems that make up a kind of Excavation Cluster Based on Network Analysis appearance and RF switch; Comprise the vector network analyzer 1 that carries out Measurement and analysis, carry out RF switch (6,7) that channel switches, a plurality of transmitting antenna 3, a plurality of reception antenna 2, the LNA big unit 4 that signal is amplified and the power amplification unit 5 that signal is amplified; Said RF switch (6,7) comprises connection said a plurality of transmitting antenna 3 first RF switches 7 and second RF switch 6 that is connected said a plurality of reception antenna 2; Said first RF switch 6 is sent out big unit 5 through said power and is connected said transmitting antenna 3; Said second RF switch 6 connects said reception antenna 2 through said LNA big unit 4, and said vector network analyzer 1 connects said LNA big unit 4 and said power amplification unit 5.Said vector network analyzer 1 connects said transmitting antenna 3 and sends measuring-signal to said transmitting antenna 3 through said first RF switch 6; Said vector network analyzer 1 connects said reception antenna 2 through said second RF switch 7 and receives the measuring-signal that said reception antenna 2 is received; Said first RF switch 6 travels through successively and switches said transmitting antenna 3; Said second RF switch 7 travels through the said reception antenna 2 that switches successively, and said vector network analyzer 1 receives amplitude response and the phase response that measuring-signal is measured wireless channels all between said transmitting antenna 3 and the said reception antenna 2 successively through the said reception antenna that the said transmitting antenna 3 that switches sends measuring-signal and switching.
As shown in Figure 1, practical implementation process of the present invention is following: vector network analyzer 1 sends swept-frequency signal, and through transmitting antenna 3 emissions, swept-frequency signal is received 2 receptions of antenna via wireless channel to this swept-frequency signal after power amplification unit 5 amplifies.The swept-frequency signal that reception antenna 2 receives is sent into vector network analyzer 1 after being amplified by LNA big unit 4; Said vector network analyzer 1 connects said transmitting antenna 3 and sends measuring-signal to said transmitting antenna 3 through said first RF switch 6, and said vector network analyzer 1 connects said reception antenna 2 through said second RF switch 7 and receives the measuring-signal that said reception antenna 2 is received.Because it is a plurality of that transmitting antenna has, and adopts first RF switch 6 between a plurality of transmitting antennas, to switch; Because reception antenna 2 is a plurality of; Adopt second RF switch 6 in 2 switchings of a plurality of reception antennas; Said first RF switch 6 travels through successively and switches said transmitting antenna 3; Said second RF switch 7 travels through the said reception antenna 2 that switches successively, and said vector network analyzer 1 receives amplitude response and the phase response that measuring-signal is measured wireless channels all between said transmitting antenna 3 and the said reception antenna 2 successively through the said reception antenna that the said transmitting antenna 3 that switches sends measuring-signal and switching.
In the specific embodiment of the invention, said multi-antenna channel measuring system also comprises the computer 8 that switches between switching and the said reception antenna 2 through between the said transmitting antenna 3 of said RF switch (6,7) control.Excavation Cluster Based on Network Analysis appearance 1 all is equipped with 4 identical omnidirectional antennas with the transmitting-receiving two-end of the multi-antenna channel measuring system of RF switch (6,7); Computer 8 is thrown RF switch (6,7) through RS485 serial data communications busses control hilted broadsword four, realizes the automatic switchover between the dual-mode antenna.Computer 8 is responsible for coordinated measurement process and storage of measurement data.All adopt cable to connect between network analyzer 1 and said LNA big unit 4 and the said power amplification unit 5.
The process of traversal switched antenna of the present invention is following:
Receive mimo channel with 44 and be measured as example, transmitting antenna 3 comprises four: Tx1, Tx2, Tx3, Tx4, reception antenna comprise four: Rx1, Rx2, Rx3, Rx4.At first transmitting antenna 3 is switched to Tx1, reception antenna 2 switches to Rx1, measures the channel response between Tx1 and the Rx1.Reception antenna switches to Rx2, measures the channel response between Tx1 and the Rx2.Reception antenna switches to Rx4, measures the channel response between Tx1 and the Rx4.Transmitting antenna is switched to Tx2, and reception antenna switches to Rx1, measures the channel response between Tx2 and the Rx1.Reception antenna switches to Rx2, measures the channel response between Tx2 and the Rx2.Reception antenna switches to Rx4, measures the channel response between Tx2 and the Rx4.Up to the channel response that measures between any transmit antennas 3 and any reception antenna 2.
As shown in Figure 2, preferred implementation of the present invention is: said RF switch (6,7) comprises the control unit (not shown) of the multichannel antenna being carried out switching controls.Said control unit comprises power module, signal conversion module and the multichannel antenna is carried out the control module of switching controls that said control module adopts Transistor-Transistor Logic level to control the conducting and the disconnection of said first RF switch 6 and said second RF switch 7 corresponding ports.
As shown in Figure 1, preferred implementation of the present invention is: said multi-antenna channel measuring system comprises that also to the alignment unit (not shown), said alignment unit is calibrated the frequency response of wireless channel.Detailed process does; Measure the frequency response of said power amplification unit, said LNA big unit, said RF switch; The frequency response of the said power amplification unit 5 that employing is measured when carrying out data processing, said LNA big unit 4, said RF switch (6,7) is calibrated the frequency response of wireless channel.
Like Fig. 1, shown in Figure 3; Embodiment of the present invention is: the many antenna measurements method that makes up a kind of Excavation Cluster Based on Network Analysis appearance and RF switch; Comprise the vector network analyzer 1, a plurality of transmitting antenna 3, a plurality of reception antenna 2 that carry out Measurement and analysis; The LNA big unit 4 that signal is amplified reaches the power amplification unit 5 that signal is amplified; The RF switch (6 that wireless channel between transmitting antenna 3 and reception antenna 2 switches; 7), said RF switch (6,7) comprises connection said a plurality of transmitting antenna 3 first RF switches 7 and second RF switch 6 that is connected said a plurality of reception antenna 2; Said first RF switch 6 is sent out big unit 5 through said power and is connected said transmitting antenna 3, and said second RF switch 6 connects said reception antenna 2 through said LNA big unit 4, and said channel measuring method comprises the steps:
Comprise the vector network analyzer 1 that carries out Measurement and analysis, RF switch, a plurality of transmitting antenna, a plurality of reception antenna that carries out the channel switching, said channel measuring method comprises the steps:
Step 100: send swept-frequency signal, that is: vector network analyzer 1 sends swept-frequency signal, said transmitting antenna 3 emissions that swept-frequency signal is switched through said RF switch 7 after power amplification unit 5 amplifies;
Step 200: the receiving frequency-sweeping signal, that is: swept-frequency signal receives through the said reception antenna 2 that said RF switch 6 switches via wireless channel, sends into said vector network analyzer 1 after then the swept-frequency signal that receives being amplified by said LNA big unit 4;
Step 300: measured channel, that is: said vector network analyzer 1 is measured the amplitude response and the phase response of the wireless channel of said transmitting antenna 3 and said reception antenna 2;
Step 400: traversal switched antenna; That is: travel through said transmitting antenna 3 of switching and said reception antenna 2 successively through said RF switch (6,7); Repeat the step of above-mentioned transmission swept-frequency signal, receiving frequency-sweeping signal, measured channel behind each the switching, up to amplitude response and the phase response of measuring all transmitting antennas 3 and all reception antennas 2 wireless channel between any two.
As shown in Figure 1, preferred implementation of the present invention is: also comprise computer 8, said computer 8 is controlled the said reception antenna 2 of said RF switches (6,7) switching and is switched said transmitting antenna 3.
Said multi-antenna channel measuring system comprises that also to the alignment unit (not shown), said alignment unit is calibrated the frequency response of wireless channel.Detailed process does; Measure said power amplification unit 5, said LNA big unit 4, said RF switch (6; 7) frequency response; The frequency response of the said power amplification unit 5 that when carrying out data processing, will measure, said LNA big unit 4, said RF switch (6,7) is taken into account the frequency response of wireless channel is calibrated.
The process of traversal switched antenna of the present invention is following:
Receive mimo channel with 44 and be measured as example, transmitting antenna 3 comprises four: Tx1, Tx2, Tx3, Tx4, reception antenna comprise four: Rx1, Rx2, Rx3, Rx4.At first transmitting antenna 3 is switched to Tx1, reception antenna 2 switches to Rx1, measures the channel response between Tx1 and the Rx1.Reception antenna switches to Rx2, measures the channel response between Tx1 and the Rx2.Reception antenna switches to Rx4, measures the channel response between Tx1 and the Rx4.Transmitting antenna is switched to Tx2, and reception antenna switches to Rx1, measures the channel response between Tx2 and the Rx1.Reception antenna switches to Rx2, measures the channel response between Tx2 and the Rx2.Reception antenna switches to Rx4, measures the channel response between Tx2 and the Rx4.Up to the channel response that measures between any transmit antennas 3 and any reception antenna 2.
Technique effect of the present invention is: many antenna measurement systems of this patent Excavation Cluster Based on Network Analysis appearance and RF switch; Network analyzer in RF switch in the time domain platform and the frequency domain platform is effectively combined; This system can utilize Long-distance Control to realize unmanned the measurement under the prerequisite that possesses the frequency domain measurement advantage on the one hand, avoids the artificial disturbance in the measuring process; Can realize measuring automatically based on the labview software platform on the other hand, effectively improve efficiency of measurement.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (5)
1. many antenna measurement systems of Excavation Cluster Based on Network Analysis appearance and RF switch; It is characterized in that; Comprise the vector network analyzer that carries out Measurement and analysis, RF switch, a plurality of transmitting antenna, a plurality of reception antenna that carries out the channel switching; Said RF switch comprises connection said a plurality of transmitting antenna first RF switches and second RF switch that is connected said a plurality of reception antennas; Said vector network analyzer connects said transmitting antenna and sends measuring-signal to said transmitting antenna through said first RF switch; Said vector network analyzer connects said reception antenna through said second RF switch and receives the measuring-signal that said reception antenna is received; Said first RF switch travels through successively and switches said transmitting antenna; Said second RF switch travels through the said reception antenna of switching successively, and said vector network analyzer receives amplitude response and the phase response that measuring-signal is measured wireless channels all between said transmitting antenna and the said reception antenna successively through the said reception antenna that the said transmitting antenna that switches sends measuring-signal and switching.
2. according to many antenna measurement systems of said Excavation Cluster Based on Network Analysis appearance of claim 1 and RF switch, it is characterized in that said RF switch comprises the control unit that the multichannel antenna is carried out switching controls.
3. according to many antenna measurement systems of said Excavation Cluster Based on Network Analysis appearance of claim 2 and RF switch; It is characterized in that; Said control unit comprises power module, signal conversion module and the multichannel antenna is carried out the control module of switching controls that said control module adopts Transistor-Transistor Logic level to control the conducting and the disconnection of the corresponding input/output port conducting of said first RF switch and disconnection and the corresponding input/output port of said second RF switch.
4. according to many antenna measurement systems of said Excavation Cluster Based on Network Analysis appearance of claim 1 and RF switch, it is characterized in that said multi-antenna channel measuring system comprises that also to alignment unit, said alignment unit is calibrated the frequency response between wireless channel.
5. according to many antenna measurement systems of said Excavation Cluster Based on Network Analysis appearance of claim 1 and RF switch; It is characterized in that, said multi-antenna channel measuring system also comprise through said RF switch control between the said transmitting antenna switch and said reception antenna between the computer that switches.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011205285305U CN202424728U (en) | 2011-12-16 | 2011-12-16 | Multi-antenna measuring system based on network analysis instrument and radio-frequency switch |
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| CN2011205285305U CN202424728U (en) | 2011-12-16 | 2011-12-16 | Multi-antenna measuring system based on network analysis instrument and radio-frequency switch |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412917A (en) * | 2011-12-16 | 2012-04-11 | 哈尔滨工业大学深圳研究生院 | Multiple-antenna measurement system and method based on network analyzer and RF (radio frequency) switch |
| CN103076507A (en) * | 2012-12-28 | 2013-05-01 | 苏州市大富通信技术有限公司 | Radio frequency module, sampling device, antenna test system and antenna test method |
| CN104198824A (en) * | 2014-09-05 | 2014-12-10 | 中国科学院电子学研究所 | Measurement method for differential antenna |
| CN105281844A (en) * | 2014-06-30 | 2016-01-27 | 中兴通讯股份有限公司 | Broadband multi-antenna wireless channel measuring system and method thereof |
| CN107064655A (en) * | 2017-01-24 | 2017-08-18 | 北京电子工程总体研究所 | A kind of microwave multiple antennas test device of program-controlled switching |
| CN107104742A (en) * | 2017-04-02 | 2017-08-29 | 上海无线通信研究中心 | A kind of calibration method and its system towards parallel multi-channel wireless channel measurement |
| CN107179527A (en) * | 2017-07-10 | 2017-09-19 | 闽江学院 | A kind of method that the indoor ranging of high accuracy is realized based on orthogonal set technology |
| CN109309534A (en) * | 2018-11-16 | 2019-02-05 | 北京遥感设备研究所 | Multi-channel radio frequency transmitting-receiving subassembly automatization test system and method |
| CN109374990A (en) * | 2018-12-03 | 2019-02-22 | 北京无线电计量测试研究所 | A kind of antenna phase center calibration method |
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2011
- 2011-12-16 CN CN2011205285305U patent/CN202424728U/en not_active Withdrawn - After Issue
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102412917A (en) * | 2011-12-16 | 2012-04-11 | 哈尔滨工业大学深圳研究生院 | Multiple-antenna measurement system and method based on network analyzer and RF (radio frequency) switch |
| CN102412917B (en) * | 2011-12-16 | 2014-04-16 | 哈尔滨工业大学深圳研究生院 | Multiple-antenna measurement system and method based on network analyzer and RF (radio frequency) switch |
| CN103076507A (en) * | 2012-12-28 | 2013-05-01 | 苏州市大富通信技术有限公司 | Radio frequency module, sampling device, antenna test system and antenna test method |
| CN103076507B (en) * | 2012-12-28 | 2015-07-08 | 苏州市大富通信技术有限公司 | Radio frequency module, sampling device, antenna test system and antenna test method |
| CN105281844A (en) * | 2014-06-30 | 2016-01-27 | 中兴通讯股份有限公司 | Broadband multi-antenna wireless channel measuring system and method thereof |
| CN104198824A (en) * | 2014-09-05 | 2014-12-10 | 中国科学院电子学研究所 | Measurement method for differential antenna |
| CN107064655A (en) * | 2017-01-24 | 2017-08-18 | 北京电子工程总体研究所 | A kind of microwave multiple antennas test device of program-controlled switching |
| CN107104742A (en) * | 2017-04-02 | 2017-08-29 | 上海无线通信研究中心 | A kind of calibration method and its system towards parallel multi-channel wireless channel measurement |
| CN107179527A (en) * | 2017-07-10 | 2017-09-19 | 闽江学院 | A kind of method that the indoor ranging of high accuracy is realized based on orthogonal set technology |
| CN107179527B (en) * | 2017-07-10 | 2020-02-14 | 闽江学院 | Method for realizing high-precision indoor distance measurement based on orthogonal diversity technology |
| CN109309534A (en) * | 2018-11-16 | 2019-02-05 | 北京遥感设备研究所 | Multi-channel radio frequency transmitting-receiving subassembly automatization test system and method |
| CN109374990A (en) * | 2018-12-03 | 2019-02-22 | 北京无线电计量测试研究所 | A kind of antenna phase center calibration method |
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