CN202002984U - Multi-frequency-band passive intermodulation test instrument - Google Patents
Multi-frequency-band passive intermodulation test instrument Download PDFInfo
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- CN202002984U CN202002984U CN2011200136446U CN201120013644U CN202002984U CN 202002984 U CN202002984 U CN 202002984U CN 2011200136446 U CN2011200136446 U CN 2011200136446U CN 201120013644 U CN201120013644 U CN 201120013644U CN 202002984 U CN202002984 U CN 202002984U
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Abstract
The utility model provides a multi-frequency-band passive intermodulation test instrument for a test range being 0.35 to 3GHz, which can ensure the measuring precision of the intermodulation index of products to be measured and can also improve the product measuring efficiency. In order to realize the goals, the multi-frequency-band passive intermodulation test instrument adopts the following technical scheme that the multi-frequency-band passive intermodulation test instrument comprises a signal amplification part, a power detection part, a switch matrix module, a power synthesis module and a receiving and processing part, wherein the signal amplification part is formed by connecting a first wideband signal source module in series with a first linear amplifier and connecting a second wideband signal source module in series with a second linear amplifier, the power detection part is formed by correspondingly installing a first directional coupler and a first analog-to-digital (AD) conversion module and correspondingly installing a second directional coupler and a second AD conversion module, the switch matrix module consists of first to third single-pole six-throw switches, the power synthesis module consists of a high-intermodulation power synthesis device, and the receiving and processing part is formed by connecting a low-intermodulation wideband pilot frequency combiner in series with a wide frequency receiver.
Description
Technical field
What the utility model patent related to is a kind of equipment that used wideband antenna feeder product (as: antenna, diplexer, cable assembly) in the radio communication is carried out intermodulation testing, and especially it can be measured in the so wide frequency range of 0.35～3GHz.
Background technology
" multiband passive cross modulation test instrument " is the specialized equipment that a kind of inter-modulated signal of precision is measured, and is used for detecting " Intermodulation Interference " noise of the widely used antenna of mobile communications network, cable assembly, triplexer.Along with the continuous expansion of China's mobile communications network and the rapid increase of transmitted data amount, requirement for mobile communication product " Intermodulation Interference " noise is also more and more higher, the indispensable detecting instrument when the passive cross modulation test instrument has become the production test of numerous communication production firm.And passive cross modulation test instrument in the market only is suitable for the intermodulation testing of single frequency point, if measure the intermodulation index of other frequency range, measured piece must be removed, change on the intermodulation testing instrument of other frequency range and test, vary like this, influence the efficient of production test.
The utility model content
The purpose of this utility model is for overcoming the deficiency of above-mentioned background technology, a kind of multiband intermodulation testing instrument that is used for 0.35～3GHz test specification is provided, can guarantee to measure the accuracy rate of test product intermodulation index, can improving the efficient that product is measured again.
The utility model adopts following technical scheme for achieving the above object:
The utility model multiband passive cross modulation test instrument, comprise signal amplifying part branch, power detection part, switch matrix module, power synthesis module and Return Reception Dept. branch, wherein signal amplifying part divide by the first broadband signal source module be connected in series first linear amplifier, the second band signal source module is connected in series second linear amplifier and forms; Power detection part is made up of with corresponding setting of the 2nd AD data-converting block with the corresponding setting of an AD data-converting block, second directional coupler first directional coupler; The switch matrix module is made up of first to the 3rd hilted broadsword, six throw switches; The power synthesis module is made up of high intermodulation power compositor; Return Reception Dept. divides by low intermodulation broadband alien frequencies combiner serial connection wideband receiver and forms; The input end of output termination first directional coupler of first linear amplifier, second linear amplifier the input end of output termination second directional coupler, the output terminal of first directional coupler is connected in series the input end that connects high intermodulation power compositor behind first hilted broadsword, six throw switches, the output terminal of second directional coupler is connected in series the input end that connects high intermodulation power compositor behind second hilted broadsword, six throw switches, the input end of the low intermodulation broadband of the output termination of high intermodulation power compositor alien frequencies combiner, the output terminal of high intermodulation power compositor also is provided with the 3rd hilted broadsword six throw switches.
Between the output terminal of first directional coupler and first hilted broadsword, six throw switches first isolator is set also; Between the output terminal of second directional coupler and second hilted broadsword, six throw switches second isolator is set also.
The utlity model has following beneficial effect:
1., high stable state, low spuious broadband signal source.
2., highly sensitive, broadband receiver, can in 0.35～3GHz scope, receive the microwave signal of processing-130dBm;
3., the design and the processing technology of the passive network of low intermodulation level;
4., the low-power consumption high power, the design of linear amplifier and application technology;
5., high efficiency integrated heat spreader;
6., the interface control program of writing based on GCC platform C language development;
7., hang down intermodulation, the switch matrix module of high-isolation.
8., the broadband alien frequencies combiner of high power, low intermodulation numerical value.
9., this equipment has adopted the cabinet of EMC technology.
The multiband passive cross modulation test instrument that adopts the said structure technology to form, can be used in the mobile communcations system of 0.35～3GHz, with equal modules (narrow band signal source involved in each frequency range intermodulation instrument, narrow-band receiver, the arrowband power amplifier), completely changes, select the signal source in broadband for use, the receiver in broadband, the power amplifier in broadband; It is nearly 40% that the total system work efficiency improves, the power consumption of saving equipment greatly.Simultaneously, utilize the receiver in two wideband signal sources and a broadband can substitute signal source and six narrow-band receivers of 12 arrowbands, saved resources costs greatly.
Description of drawings
Shown in Figure 1 is the test philosophy of passive intermodulation instrument in the past.
Shown in Figure 2 is test philosophy of the present utility model.
Embodiment
Independent as shown in Figure 1 desk-top signal source (or frequency synthesis source) 101,102 outputs connect linear power amplifier 203,204 driving work, by isolator 303,304(isolator 303, the 304th, anti-stop signal total reflection is to linear power amplifier 201,202 damage), the back is synthetic with two paths of signals by cavity type electric bridge 601, composite signal is monitored by instrumentation power meter 701 by cavity type directional coupler 401(directional coupler 401 coupled powers, monitor each road power amplifier 201,202 output powers), export to directional coupler 501 through measured piece DUT, most of power signal is absorbed by terminator 901, part power signal be reflected (consequent passive intermodulation signal), by desk-top instrument spectrum analyzer received signal, analyzing and processing shows this intermodulation point with inter-modulated signal in the spectral line mode.
The signal source 103 of high integrated wideband frequency as shown in Figure 2,104 outputs connect linear power amplifier 203,204 drive its work, by directional couple 402,403 and isolator 303,304(directional coupler 402,403 coupled powers are by AD digital conversion 111,112 monitor, monitor each road output power, isolator 303, the 304th, anti-stop signal total reflection is to linear power amplifier 203,204 damage, the intermodulation numerical value that suppresses system simultaneously), export to high power, the switch matrix 801 of low intermodulation numerical value, 802, the effect of 803(switch matrix is the power combiner that high-power signal can be switched to different frequency range), power combiner 602 with different frequency range, A1, A2, A3, A4, A5, A6 port are connected to the A1 of the broadband alien frequencies combiner 131 of high intermodulation, A2 successively, A3, A4, A5 is on the A6 port.Signal is launched (most of power signal is absorbed by terminator 902) through wideband combiner 131 by the A port, part power signal be reflected (consequent passive intermodulation signal) collect to wideband receiver 121 analyzing and processing by broadband alien frequencies combiner and switch matrix, be shown on the LCD screen intuitively by programming software control mode with numerical value.
Claims (2)
1. multiband passive cross modulation test instrument, it is characterized in that: comprise signal amplifying part branch, power detection part, switch matrix module, power synthesis module and Return Reception Dept. branch, wherein the signal amplifying part branch is made up of the first broadband signal source module (103) serial connection, first linear amplifier (203), the second broadband signal source module (104) serial connection second linear amplifier (204); Power detection part is made up of with corresponding setting of the 2nd AD data-converting block (112) with the corresponding setting of an AD data-converting block (111), second directional coupler (403) first directional coupler (402); The switch matrix module is made up of first to the 3rd hilted broadsword, six throw switches (801), (802), (803); The power synthesis module is made up of high intermodulation power compositor (602); Return Reception Dept. divides by low intermodulation broadband alien frequencies combiner (131) serial connection wideband receiver (121) and forms; The input end of output termination first directional coupler (402) of first linear amplifier (203), second linear amplifier (204) the input end of output termination second directional coupler (403), the output terminal of first directional coupler (402) is connected in series the input end that connects high intermodulation power compositor (602) behind first hilted broadsword, six throw switches (801), the output terminal of second directional coupler (403) is connected in series the input end that connects high intermodulation power compositor (602) behind second hilted broadsword, six throw switches (802), the input end of the low intermodulation broadband alien frequencies combiner (131) of the output termination of high intermodulation power compositor (602), the output terminal of high intermodulation power compositor (602) also is provided with the 3rd hilted broadsword six throw switches (803).
2. multiband passive cross modulation test instrument according to claim 1 is characterized in that: between the output terminal of first directional coupler (402) and first hilted broadsword, six throw switches (801) first isolator (303) is set also; Between the output terminal of second directional coupler (403) and second hilted broadsword, six throw switches (802) second isolator (304) is set also.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200136446U CN202002984U (en) | 2011-01-18 | 2011-01-18 | Multi-frequency-band passive intermodulation test instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200136446U CN202002984U (en) | 2011-01-18 | 2011-01-18 | Multi-frequency-band passive intermodulation test instrument |
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| Publication Number | Publication Date |
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| CN202002984U true CN202002984U (en) | 2011-10-05 |
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| CN2011200136446U Expired - Fee Related CN202002984U (en) | 2011-01-18 | 2011-01-18 | Multi-frequency-band passive intermodulation test instrument |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664695A (en) * | 2012-05-08 | 2012-09-12 | 中国联合网络通信有限公司广东省分公司 | Multi-signal passive intermodulation test equipment |
| CN102664694A (en) * | 2012-04-25 | 2012-09-12 | 中国联合网络通信有限公司广东省分公司 | Multi-band and multi-signal mixed inter-modulation interference analyzer and analyzing method thereof |
| CN102868462A (en) * | 2012-09-07 | 2013-01-09 | 苏州市大富通信技术有限公司 | Inter-modulation signal detecting system and method |
| CN102928736A (en) * | 2012-10-29 | 2013-02-13 | 罗森伯格（上海）通信技术有限公司 | Signal processing method, unit and device as well as signal transmission system |
| CN103001712A (en) * | 2012-11-20 | 2013-03-27 | 武汉虹信通信技术有限责任公司 | Multi-frequency-band multi-signal second-order inter-modulation testing system |
| CN103226168A (en) * | 2013-04-07 | 2013-07-31 | 南京纳特通信电子有限公司 | PIM+S parameter tester |
| CN103236887A (en) * | 2013-04-07 | 2013-08-07 | 南京纳特通信电子有限公司 | Low intermodulation radio frequency coaxial switch testing array |
| CN103245851A (en) * | 2013-04-07 | 2013-08-14 | 南京纳特通信电子有限公司 | Intermodulation tester for open-circuit device |
| CN103517299A (en) * | 2012-06-18 | 2014-01-15 | 罗森伯格（上海）通信技术有限公司 | Base-station intermodulation signal detection method and system |
| CN103605066A (en) * | 2013-08-30 | 2014-02-26 | 西安空间无线电技术研究所 | Passive intermodulation test system employing single power amplifier |
| CN103605033A (en) * | 2013-11-29 | 2014-02-26 | 北京无线电计量测试研究所 | Cross-frequency-band electromagnetic property measuring device and method of X band antennas |
| CN104767008A (en) * | 2015-04-23 | 2015-07-08 | 西安电子工程研究所 | Microwave frequency band electronic switch array |
| CN104880621A (en) * | 2015-04-18 | 2015-09-02 | 南京纳特通信电子有限公司 | Self calibration passive intermodulation tester |
| CN105577294A (en) * | 2014-10-13 | 2016-05-11 | 罗森伯格技术（昆山）有限公司 | Multifunctional handheld passive intermodulation analyzer |
| WO2016110727A1 (en) * | 2015-01-06 | 2016-07-14 | Commscope Italy S.R.L. | Multi-band combiner with pim detection |
| CN106253997A (en) * | 2016-08-10 | 2016-12-21 | 杭州紫光网络技术有限公司 | A kind of multiband intersection cross modulation test system |
| CN106412977A (en) * | 2015-07-28 | 2017-02-15 | 工业和信息化部通信计量中心 | Intermodulation test method and device |
| CN107769869A (en) * | 2016-08-18 | 2018-03-06 | 京信通信***（中国）有限公司 | Multi-signal passive intermodulation test system |
-
2011
- 2011-01-18 CN CN2011200136446U patent/CN202002984U/en not_active Expired - Fee Related
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664694A (en) * | 2012-04-25 | 2012-09-12 | 中国联合网络通信有限公司广东省分公司 | Multi-band and multi-signal mixed inter-modulation interference analyzer and analyzing method thereof |
| CN102664695A (en) * | 2012-05-08 | 2012-09-12 | 中国联合网络通信有限公司广东省分公司 | Multi-signal passive intermodulation test equipment |
| CN103517299A (en) * | 2012-06-18 | 2014-01-15 | 罗森伯格（上海）通信技术有限公司 | Base-station intermodulation signal detection method and system |
| CN103517299B (en) * | 2012-06-18 | 2018-11-20 | 罗森伯格（上海）通信技术有限公司 | A kind of base-station intermodulation signal detection method and system |
| CN102868462A (en) * | 2012-09-07 | 2013-01-09 | 苏州市大富通信技术有限公司 | Inter-modulation signal detecting system and method |
| CN102928736A (en) * | 2012-10-29 | 2013-02-13 | 罗森伯格（上海）通信技术有限公司 | Signal processing method, unit and device as well as signal transmission system |
| CN103001712A (en) * | 2012-11-20 | 2013-03-27 | 武汉虹信通信技术有限责任公司 | Multi-frequency-band multi-signal second-order inter-modulation testing system |
| CN103226168B (en) * | 2013-04-07 | 2015-05-20 | 南京纳特通信电子有限公司 | PIM+S parameter tester |
| CN103245851A (en) * | 2013-04-07 | 2013-08-14 | 南京纳特通信电子有限公司 | Intermodulation tester for open-circuit device |
| CN103236887A (en) * | 2013-04-07 | 2013-08-07 | 南京纳特通信电子有限公司 | Low intermodulation radio frequency coaxial switch testing array |
| CN103226168A (en) * | 2013-04-07 | 2013-07-31 | 南京纳特通信电子有限公司 | PIM+S parameter tester |
| CN103605066A (en) * | 2013-08-30 | 2014-02-26 | 西安空间无线电技术研究所 | Passive intermodulation test system employing single power amplifier |
| CN103605033A (en) * | 2013-11-29 | 2014-02-26 | 北京无线电计量测试研究所 | Cross-frequency-band electromagnetic property measuring device and method of X band antennas |
| CN103605033B (en) * | 2013-11-29 | 2016-05-18 | 北京无线电计量测试研究所 | X-wave band autenna across frequency range electromagnetic property measurement mechanism and measuring method |
| CN105577294A (en) * | 2014-10-13 | 2016-05-11 | 罗森伯格技术（昆山）有限公司 | Multifunctional handheld passive intermodulation analyzer |
| WO2016110727A1 (en) * | 2015-01-06 | 2016-07-14 | Commscope Italy S.R.L. | Multi-band combiner with pim detection |
| US10090938B2 (en) | 2015-01-06 | 2018-10-02 | Commscope Italy, S.R.L. | Multi-band combiner with PIM detection |
| CN104880621B (en) * | 2015-04-18 | 2018-06-05 | 南京纳特通信电子有限公司 | Self calibration passive cross modulation test instrument |
| CN104880621A (en) * | 2015-04-18 | 2015-09-02 | 南京纳特通信电子有限公司 | Self calibration passive intermodulation tester |
| CN104767008A (en) * | 2015-04-23 | 2015-07-08 | 西安电子工程研究所 | Microwave frequency band electronic switch array |
| CN106412977A (en) * | 2015-07-28 | 2017-02-15 | 工业和信息化部通信计量中心 | Intermodulation test method and device |
| CN106412977B (en) * | 2015-07-28 | 2019-10-29 | 中国信息通信研究院 | The method and device of intermodulation testing |
| CN106253997B (en) * | 2016-08-10 | 2018-10-19 | 杭州紫光网络技术有限公司 | A kind of multiband intersection cross modulation test system |
| CN106253997A (en) * | 2016-08-10 | 2016-12-21 | 杭州紫光网络技术有限公司 | A kind of multiband intersection cross modulation test system |
| CN107769869A (en) * | 2016-08-18 | 2018-03-06 | 京信通信***（中国）有限公司 | Multi-signal passive intermodulation test system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111005 Termination date: 20200118 |