CN105577294A - Multifunctional handheld passive intermodulation analyzer - Google Patents
Multifunctional handheld passive intermodulation analyzer Download PDFInfo
- Publication number
- CN105577294A CN105577294A CN201410538963.7A CN201410538963A CN105577294A CN 105577294 A CN105577294 A CN 105577294A CN 201410538963 A CN201410538963 A CN 201410538963A CN 105577294 A CN105577294 A CN 105577294A
- Authority
- CN
- China
- Prior art keywords
- receiver
- passive intermodulation
- mixer
- mouth
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
- Noise Elimination (AREA)
Abstract
The invention discloses a multifunctional handheld passive intermodulation analyzer which comprises the components of two signal source generating circuits, a 3db bridge, a duplex combiner, a changeover switch, a first receiver, a second receiver and a third receiver. Two passive intermodulation excitation signals which are generated by the signal source generating circuit are amplified and input to the 3db bridge for being combined. After combination of the passive intermodulation excitation signals, an obtained signal is output to the duplex combiner for being processed. The first receiver is used for analyzing the intermodulation signal of the RX receiving end of the duplex combiner. The second receiver is used for analyzing the second-order intermodulation/secondary harmonic of the duplex combiner. The third receiver is connected with the coupling port of the duplex combiner or the N port of the analyzer through the changeover switch, and is used for analyzing isolation or frequency spectrum. The multifunctional handheld passive intermodulation analyzer has advantages of realizing detection for multiple functions of the passive intermodulation analyzer, realizing high integration level of an instrument, reducing size and weight of the instrument, and realizing convenient carrying.
Description
Technical field
The present invention relates to the passive cross modulation test technical field in mobile communication antenna feed system, especially relate to the hand-hold passive intermodulation analyzer that a kind of function is many, volume is little.
Background technology
Along with the high speed development of present mobile communication technology, the data passed through in fixed-bandwidth and speech data increase day by day, the signal of a lot of different frequency can be there is in same transmission medium, because transmission medium all has certain nonlinear characteristic, when the signal of these different frequencies mixes the transmission medium being input to and having nonlinear characteristic, a kind of spurious signal-passive intermodulation (PassiveInterModulation is called for short PIM) can be produced.
When in the reception frequency range that passive intermodulation drops on base station, the sensitivity of receiver can reduce, thus causes the Carrier interference ratio (C/I) of speech quality or system to reduce.Field engineer often needs to carry instrument and carries out passive intermodulation malfunction elimination, and based on this, demand that is little for volume, lightweight, Multifunctional hand-held passive intermodulation instrument that function is many is more and more stronger in mobile communications.
The design of some passive intermodulation analyzers is there is in prior art, as depicted in figs. 1 and 2, passive intermodulation analyzer wherein shown in Fig. 1 comprises the first signal source, secondary signal source, 3db electric bridge, duplexer and two receivers, first signal source and secondary signal source are input to the TX end of duplexer after respective power amplifier by 3db electric bridge, the RX end of duplexer and coupling aperture respectively connect a receiver, and its shortcoming existed cannot carry out analysis to measure to second order inter-modulation/second harmonic, frequency spectrum, isolation.
Passive intermodulation analyzer shown in Fig. 2 comprises the first signal source, secondary signal source, 3db electric bridge, duplexer and a receiver, first signal source and secondary signal source are input to the GSM end of duplexer after respective power amplifier by 3db electric bridge, the DCS termination receiver of duplexer, its shortcoming existed can only carry out analysis to measure for second order inter-modulation/second harmonic.
In above-mentioned two kinds of existing passive intermodulation analyzers except there is the few shortcoming of function, also all have that each several part integrated level in instrument is not high and the instrument volume that causes large, carry the shortcomings such as inconvenient, therefore the function for currently available technology existence is few, instrument volume is large, carry inconvenient problem, necessaryly provide a kind of multi-functional, passive intermodulation analyzer that integrated level is higher, to solve the defect that above-mentioned prior art exists.
Summary of the invention
The object of the invention is to the defect overcoming prior art, a kind of Multifunctional hand-held passive intermodulation analyzer is provided, add second order inter-modulation/second harmonic test function, isolation degree test function and spectrum analysis function, to realize the Function detection variation of passive intermodulation analyzer.
For achieving the above object, the present invention proposes following technical scheme: a kind of Multifunctional hand-held passive intermodulation analyzer, comprise: two paths of signals source circuit for generating, 3db electric bridge, duplexing mixer, receiver and diverter switch, described duplexing mixer has TX_GSM end, RX_GSM end, DCS end, coupling aperture and ANT end, described receiver comprises the first receiver, second receiver and the 3rd receiver, wherein:
Described two paths of signals source circuit for generating inputs to described 3db electric bridge for generation of two-way passive intermodulation pumping signal;
Passive intermodulation pumping signal described in two-way is closed behind road by described 3db electric bridge, is exported to that described duplexing mixer carries out filtering, signal separation process by the TX end of described duplexing mixer;
Described first receiver is held with the RX_GSM of described duplexing mixer and is connected, and the intermodulation that the passive intermodulation signal for producing TX_GSM transmitting terminal falls into RX_GSM receiving terminal is analyzed;
Described second receiver is held with the DCS of described duplexing mixer and is connected, and the intermodulation that the second order inter-modulation/second harmonic for producing GSM frequency range drops into DCS frequency range is analyzed;
Described 3rd receiver is connected with the coupling aperture of duplexing mixer by described diverter switch or is connected with the N mouth of analyzer, for carrying out the analysis of isolation or frequency spectrum.
Preferably, signal source circuit for generating described in every road comprises a signal source generator is connected described signal source generator output power amplifier with one, and the passive intermodulation pumping signal that described signal source generator produces exports to described 3db electric bridge after respective described power amplifier amplifies.
Preferably, one end switching of described diverter switch is connected to described coupling aperture or N mouth, and the other end is connected to described 3rd receiver, and described coupling aperture signal and N message number are switched by described diverter switch is defeated by described 3rd receiver.
Preferably, described 3db electric bridge one end also connects one first load, and the first load can select 51 ohm load.
Preferably, described duplexing mixer is by duplexer and mixer is integrated forms, and improves the integrated level of analyzer entirety, thus makes the corresponding reduction of the volume and weight of analyzer, alleviates.
Preferably, described analyzer also comprises DIN mouth, and the ANT end of described duplexing mixer is linked into described DIN mouth.
When carrying out second order inter-modulation/second harmonic test, described DIN mouth connects the input of measured device, output termination one second load of described measured device.Second order inter-modulation/second harmonic enters into corresponding receiver through the DCS port of duplexing mixer and analyzes, thus obtains second order inter-modulation/second harmonic test result.
When carrying out isolation degree test, described DIN mouth connects the input of measured device, and the output of described measured device is connected with described N mouth, and the input of described diverter switch is connected with described N mouth, 3rd receiver carries out analytical calculation to received power, obtains isolation degree test result.
When carrying out spectrum analysis test, the output of described measured device is connected with described N mouth, and the input of described diverter switch is connected with described N mouth, and the 3rd receiver carries out analytical calculation to received power, obtains spectrum analysis test result.
The invention has the beneficial effects as follows:
1, invention increases a receiver, make passive intermodulation analyzer can carry out the test of second order inter-modulation/second harmonic test function, isolation degree test function and spectrum analysis function simultaneously, realize the more convenient of instrument, with better function, more diversified.
2, duplexer and mixer integrate by the present invention, and the height achieving instrument is integrated, thus reduce the volume and weight of instrument, are easy to carry.
3, the problem of second order inter-modulation, second harmonic can be tested when the present invention is solved do not increased any peripheral hardware by diverter switch.
Accompanying drawing explanation
Fig. 1, Fig. 2 are the theory diagram schematic diagram of the passive intermodulation analyzer of two kinds of prior aries respectively;
Fig. 3 is the theory diagram schematic diagram of Multifunctional hand-held passive intermodulation analyzer of the present invention;
Fig. 4 is the theory diagram schematic diagram of Multifunctional hand-held passive intermodulation analyzer embodiment one of the present invention;
Fig. 5 is the theory diagram schematic diagram of Multifunctional hand-held passive intermodulation analyzer embodiment two of the present invention;
Fig. 6 is the theory diagram schematic diagram of Multifunctional hand-held passive intermodulation analyzer embodiment three of the present invention.
Embodiment
Below in conjunction with accompanying drawing of the present invention, clear, complete description is carried out to the technical scheme of the embodiment of the present invention.
In order to the volume effectively solving the existence of existing passive intermodulation analyzer is large and the few problem of function, the present invention, by integrated increase by receiver, can realize the test of second order inter-modulation/second harmonic test function, isolation degree test function and spectrum analysis function simultaneously; And duplexer and mixer integrate by the present invention, the height achieving instrument is integrated, thus reduces the volume and weight of instrument, is easy to carry.
Disclosed a kind of Multifunctional hand-held passive intermodulation analyzer, is mainly used in mobile communication antenna feed system and carries out in passive cross modulation test.As shown in Figure 1, it comprises signal source generator 1, signal source generator 2, power amplifier 1, power amplifier 2, 3db electric bridge, duplex mixer, receiver 1, receiver 2, receiver 3 and diverter switch, the output of signal source generator 1 connects the input of power amplifier 1, the output of signal source generator 2 connects the input of power amplifier 2, signal source generator 1 and power amplifier 1, signal source generator 2 and power amplifier 2 respectively form a road signal source circuit for generating, signal source generator 1 and signal source generator 2 are in order to produce a road passive intermodulation pumping signal respectively.
Signal source generator 1 or signal source generator 2 comprise FPGA (field programmable gate array) chip, ADC (analog-digital converter) chip and first frequency synthesizer, the principle that both produce passive intermodulation pumping signal is: produce CW signal by the first fpga chip, send into DAC device and carry out analog-to-digital conversion, the radiofrequency signal that conversion produces and local first frequency synthesizer synthesize, obtain the radiofrequency signal needed, namely required passive intermodulation pumping signal.
Two-way passive intermodulation pumping signal inputs to 3db electric bridge after respective power amplifier amplifies.Wherein delivery outlet access one first load of 3db electric bridge, during concrete enforcement, optional 51 ohm load of first load, another delivery outlet connects the TX_GSM end of duplexing mixer, and by being inputed to by the TX_GSM of duplexing mixer end after the excitation signals synthesis after amplifying, duplexing mixer carries out filtering 3db electric bridge, signal separation process.
Duplex mixer is integrated with GSM duplexer and DCS filter, for separating of and synthesis GSM uplink and downlink signal and DCS signal.It has the TX_GSM end for receiving GSM signal, the RX_GSM end exporting GSM signal, the DCS end exporting DCS signal, coupling aperture and ANT port, from duplexing mixer coupling aperture output is backward power detection signal, this signal enters receiver 3 and does standing wave test or standing wave assignment test, and ANT port is connected with the DIN mouth of analyzer.
Receiver 1 ~ 3 for the radiofrequency signal collected (as GSM frequency range inter-modulated signal, DCS frequency range inter-modulated signal etc.) carry out spectrum analysis, each receiver comprises low noise amplifier circuit, gain amplifying circuit, frequency mixer, second frequency synthesizer, frequency overlapped-resistable filter, DAC (digital analog converter) chip and the second fpga chip, its operation principle is: receiver by the radiofrequency signal that receives first through low noise amplification, then enter gain amplifying circuit and carry out gain amplification, then feeding frequency mixer and local second frequency synthesizer synthesize, produce intermediate-freuqncy signal and send into after frequency overlapped-resistable filter carries out filtering, finally signal is sent into DAC chip and carry out digital to analog conversion, digital signal after conversion enters FPGA and do received power statistical analysis again after Fourier transform.
Particularly, receiver 1 connects the RX end of duplexing mixer, and the intermodulation that the passive intermodulation signal for producing TX_GSM transmitting terminal falls into RX_GSM receiving terminal is analyzed; Receiver 2 connects the DCS end of duplexing mixer, and the intermodulation that the second order inter-modulation/second harmonic for producing GSM frequency range drops into DCS frequency range is analyzed; Receiver 3 is connected with the coupling aperture of duplexing mixer or is connected with the N mouth of analyzer, for analyzing the index such as frequency, power level received.
Because receiver 3 only has an input port, therefore be connected with the switching of coupling aperture and N mouth to realize receiver, the present invention arranges a diverter switch at the Nodes of coupling aperture and N mouth incoming line, namely the input of diverter switch is connected with coupling aperture or N mouth, output receives receiver 3, and coupling aperture signal and N message number are switched by diverter switch is defeated by receiver 3.Wherein, the N mouth of analyzer inputs for the signal of isolation degree test on the one hand, on the other hand for doing signal input during frequency spectrograph test.
Innovative point of the present invention is mainly: except can realizing three rank that prior art comprises/multistage intermodulation testing function, intermodulation positioning function, standing wave test function and standing wave positioning function, also add second order inter-modulation/second harmonic test function, isolation degree test function, spectrum analysis function, particularly:
As shown in Figure 4, when second order inter-modulation/the second harmonic carrying out producing for GSM frequency range drops into the intermodulation testing of DCS frequency range, the input of measured device is received the DIN mouth of analyzer, export termination one second load, concrete Cleaning Principle is: information source generator 1, the two-way passive intermodulation pumping signal that information source generator 2 produces is ingoing power amplifier 1 respectively, power amplifier 2 amplifies, excitation signals after amplification enters duplexing mixer after carrying out conjunction road by 3dB electric bridge, then from duplexing mixer ANT port, pumping signal is exported to measured device, second order inter-modulation/the second harmonic produced by measured device is entered receiver 2 through the DCS port of duplexing mixer and analyzes, the intermodulation testing result that second order inter-modulation/second harmonic that GSM frequency range produces drops into DCS frequency range can be obtained.
Embodiment introduction shown in Fig. 4 be GSM and DCS co-sited use time, the second order inter-modulation of the uplink and downlink of GSM or second harmonic frequency fall into test system being caused in DCS uplink and downlink frequency range to interference, and analytical test is carried out in the up second order inter-modulation especially produced GSM frequency range or second harmonic interference.Certainly the invention is not restricted to the second order inter-modulation/second harmonic test of both, also can carry out as second order inter-modulation during GSM and TD-SCDMA co-sited/second harmonic test.
As shown in Figure 5, when carrying out isolation degree test, the DIN mouth of the input termination analyzer of measured device connects, output is connected with the N mouth of analyzer, simultaneously, the input switching of diverter switch is connected with N mouth, namely receiver 3 is made to be connected with N mouth, during concrete test, the pumping signal finally exported from duplexing mixer ANT port exports to measured device through DIN mouth, inputted the input signal of isolation degree test to receiver 3 by N mouth, receiver 3 pairs of received powers carry out analytical calculation, obtain isolation degree test result.
As shown in Figure 6, when carrying out spectrum analysis test, the output of measured device is connected with N mouth, and the input switching of diverter switch is simultaneously connected with N mouth, namely makes receiver 3 be connected with N mouth.During concrete test, the input signal of the spectrum analysis test of receiver 3 pairs of N mouth inputs carries out analytical calculation, obtains spectrum analysis test result.
Technology contents of the present invention and technical characteristic have disclosed as above; but those of ordinary skill in the art still may do all replacement and the modification that do not deviate from spirit of the present invention based on teaching of the present invention and announcement; therefore; scope should be not limited to the content that embodiment discloses; and various do not deviate from replacement of the present invention and modification should be comprised, and contained by present patent application claim.
Claims (9)
1. a Multifunctional hand-held passive intermodulation analyzer, it is characterized in that, comprise two paths of signals source circuit for generating, 3db electric bridge, duplexing mixer, receiver and diverter switch, described duplexing mixer has TX_GSM end, RX_GSM end, DCS end, coupling aperture and ANT end, described receiver comprises the first receiver, second receiver and the 3rd receiver, wherein:
Described two paths of signals source circuit for generating inputs to described 3db electric bridge for generation of two-way passive intermodulation pumping signal;
Passive intermodulation pumping signal described in two-way is closed behind road by described 3db electric bridge, is exported to that described duplexing mixer carries out filtering, signal separation process by the TX end of described duplexing mixer;
Described first receiver is held with the RX_GSM of described duplexing mixer and is connected, and the intermodulation that the passive intermodulation signal for producing TX_GSM transmitting terminal falls into RX_GSM receiving terminal is analyzed;
Described second receiver is held with the DCS of described duplexing mixer and is connected, and the intermodulation that the second order inter-modulation/second harmonic for producing GSM frequency range drops into DCS frequency range is analyzed;
Described 3rd receiver is connected with the coupling aperture of duplexing mixer by described diverter switch or is connected with the N mouth of analyzer, for carrying out the analysis of isolation or frequency spectrum.
2. Multifunctional hand-held passive intermodulation analyzer according to claim 1, it is characterized in that, signal source circuit for generating described in every road comprises a signal source generator is connected described signal source generator output power amplifier with one, and the passive intermodulation pumping signal that described signal source generator produces exports to described 3db electric bridge after respective described power amplifier amplifies.
3. Multifunctional hand-held passive intermodulation analyzer according to claim 1, it is characterized in that, one end switching of described diverter switch is connected to described coupling aperture or N mouth, the other end is connected to described 3rd receiver, and described coupling aperture signal and N message number are switched by described diverter switch is defeated by described 3rd receiver.
4. Multifunctional hand-held passive intermodulation analyzer according to claim 1, is characterized in that, described 3db electric bridge one end also connects one first load.
5. Multifunctional hand-held passive intermodulation analyzer according to claim 1, is characterized in that, described duplexing mixer is by duplexer and mixer is integrated forms.
6. the Multifunctional hand-held passive intermodulation analyzer according to Claims 1 to 5 any one, is characterized in that, described analyzer also comprises DIN mouth, and the ANT end of described duplexing mixer is linked into described DIN mouth.
7. Multifunctional hand-held passive intermodulation analyzer according to claim 6, is characterized in that, when carrying out second order inter-modulation/second harmonic test, described DIN mouth connects the input of measured device, output termination one second load of described measured device.
8. Multifunctional hand-held passive intermodulation analyzer according to claim 6, it is characterized in that, when carrying out isolation degree test, described DIN mouth connects the input of measured device, the output of described measured device is connected with described N mouth, and the input of described diverter switch is connected with described N mouth.
9. Multifunctional hand-held passive intermodulation analyzer according to claim 6, is characterized in that, when carrying out spectrum analysis test, the output of described measured device is connected with described N mouth, and the input of described diverter switch is connected with described N mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410538963.7A CN105577294B (en) | 2014-10-13 | 2014-10-13 | Multifunctional handheld passive intermodulation analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410538963.7A CN105577294B (en) | 2014-10-13 | 2014-10-13 | Multifunctional handheld passive intermodulation analyzer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105577294A true CN105577294A (en) | 2016-05-11 |
| CN105577294B CN105577294B (en) | 2020-09-11 |
Family
ID=55887037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410538963.7A Active CN105577294B (en) | 2014-10-13 | 2014-10-13 | Multifunctional handheld passive intermodulation analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105577294B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105099586A (en) * | 2015-09-11 | 2015-11-25 | 中国电子科技集团公司第四十一研究所 | Passive isolator intermodulation test device based on chamber filtering and method |
| CN108107345A (en) * | 2017-12-12 | 2018-06-01 | 广州兴森快捷电路科技有限公司 | Passive cross modulation test device |
| CN110166147A (en) * | 2019-05-15 | 2019-08-23 | 杭州紫光网络技术有限公司 | A kind of antenna for base station intermodulation fault location test system and method |
| CN112305307A (en) * | 2020-12-21 | 2021-02-02 | 深圳市鼎阳科技股份有限公司 | Third-order intermodulation measurement method of spectrum analyzer and spectrum analyzer |
| CN116054869A (en) * | 2023-03-31 | 2023-05-02 | 深圳市德雄科技有限公司 | Integrated signal combiner |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101478700A (en) * | 2008-12-11 | 2009-07-08 | 杭州紫光网络技术有限公司 | Integrated passive intermodulation analyzer |
| CN102025432A (en) * | 2010-12-17 | 2011-04-20 | 镇江市澳华测控技术有限公司 | Forward and reverse passive inter-modulation (PIM) testing device and method for isolator |
| CN202002984U (en) * | 2011-01-18 | 2011-10-05 | 南京纳特通信电子有限公司 | Multi-frequency-band passive intermodulation test instrument |
| CN202008510U (en) * | 2011-01-18 | 2011-10-12 | 南京纳特通信电子有限公司 | Comprehensive tester for passive isolator |
| CN202631635U (en) * | 2012-04-16 | 2012-12-26 | 罗森伯格（上海）通信技术有限公司 | Radio frequency test system |
| CN103368665A (en) * | 2012-03-30 | 2013-10-23 | 中国联合网络通信有限公司广东省分公司 | Multi-signal passive intermodulation test method, equipment and system |
| CN103684638A (en) * | 2013-12-17 | 2014-03-26 | 中国电子科技集团公司第四十一研究所 | Intermodulation distortion testing method of high-power device |
-
2014
- 2014-10-13 CN CN201410538963.7A patent/CN105577294B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101478700A (en) * | 2008-12-11 | 2009-07-08 | 杭州紫光网络技术有限公司 | Integrated passive intermodulation analyzer |
| CN102025432A (en) * | 2010-12-17 | 2011-04-20 | 镇江市澳华测控技术有限公司 | Forward and reverse passive inter-modulation (PIM) testing device and method for isolator |
| CN202002984U (en) * | 2011-01-18 | 2011-10-05 | 南京纳特通信电子有限公司 | Multi-frequency-band passive intermodulation test instrument |
| CN202008510U (en) * | 2011-01-18 | 2011-10-12 | 南京纳特通信电子有限公司 | Comprehensive tester for passive isolator |
| CN103368665A (en) * | 2012-03-30 | 2013-10-23 | 中国联合网络通信有限公司广东省分公司 | Multi-signal passive intermodulation test method, equipment and system |
| CN202631635U (en) * | 2012-04-16 | 2012-12-26 | 罗森伯格（上海）通信技术有限公司 | Radio frequency test system |
| CN103684638A (en) * | 2013-12-17 | 2014-03-26 | 中国电子科技集团公司第四十一研究所 | Intermodulation distortion testing method of high-power device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105099586A (en) * | 2015-09-11 | 2015-11-25 | 中国电子科技集团公司第四十一研究所 | Passive isolator intermodulation test device based on chamber filtering and method |
| CN105099586B (en) * | 2015-09-11 | 2017-11-21 | 中国电子科技集团公司第四十一研究所 | A kind of isolator passive cross modulation test device and method based on cavity filtering |
| CN108107345A (en) * | 2017-12-12 | 2018-06-01 | 广州兴森快捷电路科技有限公司 | Passive cross modulation test device |
| CN110166147A (en) * | 2019-05-15 | 2019-08-23 | 杭州紫光网络技术有限公司 | A kind of antenna for base station intermodulation fault location test system and method |
| CN110166147B (en) * | 2019-05-15 | 2020-01-21 | 杭州紫光网络技术有限公司 | Base station antenna intermodulation fault positioning test system and method |
| CN112305307A (en) * | 2020-12-21 | 2021-02-02 | 深圳市鼎阳科技股份有限公司 | Third-order intermodulation measurement method of spectrum analyzer and spectrum analyzer |
| CN116054869A (en) * | 2023-03-31 | 2023-05-02 | 深圳市德雄科技有限公司 | Integrated signal combiner |
| CN116054869B (en) * | 2023-03-31 | 2023-09-12 | 深圳市德雄科技有限公司 | Integrated signal combiner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105577294B (en) | 2020-09-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102916719B (en) | Multichannel, multi-mode, multi-functional L-band wireless set | |
| CN105577294A (en) | Multifunctional handheld passive intermodulation analyzer | |
| CN103209147B (en) | A kind of multiband millimeter wave receiver and method | |
| CN102832959A (en) | Radio-frequency front end in high and medium frequency superheterodyne+zero intermediate frequency structure | |
| CN105281850A (en) | Handheld radio comprehensive tester | |
| CN109412639B (en) | Microwave communication same frequency interference protector | |
| CN102611476A (en) | Transceiver with twice-frequency-conversion structure for 60GHz wireless communication | |
| CN109975772B (en) | Multi-system radar interference performance detection system | |
| CN102611475A (en) | Direct variable-frequency transmitter-receiver for 60 GHz wireless communication | |
| CN210958360U (en) | Signal processing circuit and antenna device | |
| CN210327507U (en) | Frequency conversion assembly for receiving frequency converter | |
| KR20090009534A (en) | Multi-band receiving apparatus and transceiving apparatus by using tunable filter | |
| CN114204950B (en) | High-performance broadband microwave receiving channel | |
| CN101888688B (en) | Time division duplex radio remote unit | |
| US9680521B2 (en) | Transceiver front-end for blocking transmit or receive frequency signals | |
| CN110768682B (en) | PXIe bus vector signal real-time transceiving module device and method | |
| CN102590617A (en) | Method for realizing output of double sources of frequency spectrograph by using integrated broadband local oscillator and switch filter array | |
| CN103001587A (en) | X-frequency-range extra-low inter-modulation frequency converter device of measurement and control system | |
| CN112564629A (en) | Spectrum expanding device based on dual-port mixer | |
| CN201690414U (en) | Transceiving channel device for KA frequency converter | |
| CN203643599U (en) | Secondary radar high- and intermediate-frequency digital receiver | |
| CN110677216A (en) | Digital radio frequency front end facing electronic countermeasure and radio frequency signal frequency detection method | |
| CN113381779B (en) | Ultra wideband receiver | |
| CN213585704U (en) | Spectrum expanding device based on dual-port mixer | |
| CN113992556A (en) | Ultra-wideband signal analysis and processing system supporting 5G millimeter wave frequency band |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: Kunshan Dianshan Lake Town City Suzhou city Jiangsu province 215345 Shen road, No. 6 Applicant after: Rosenberg Technology Co.,Ltd. Address before: Kunshan Dianshan Lake Town City Suzhou city Jiangsu province 215345 Shen road, No. 6 Applicant before: ROSENBERGER TECHNOLOGY ( KUNSHAN) Co.,Ltd. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 215300 No.6 Shen'an Road, Dianshanhu Town, Kunshan City, Suzhou City, Jiangsu Province Patentee after: ProLogis Communication Technology (Suzhou) Co.,Ltd. Address before: 215345 No. 6 Shen'an Road, Dianshan Lake Town, Kunshan City, Suzhou City, Jiangsu Province Patentee before: Rosenberg Technology Co.,Ltd. |