CN204206186U - Binary channels passive device power margin test macro - Google Patents
Binary channels passive device power margin test macro Download PDFInfo
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- CN204206186U CN204206186U CN201420598774.4U CN201420598774U CN204206186U CN 204206186 U CN204206186 U CN 204206186U CN 201420598774 U CN201420598774 U CN 201420598774U CN 204206186 U CN204206186 U CN 204206186U
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- 238000012360 testing method Methods 0.000 title claims abstract description 53
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- 238000001914 filtration Methods 0.000 claims description 4
- 238000005422 blasting Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 abstract description 12
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Abstract
The utility model relates to a kind of binary channels passive device power margin test macro, comprise two signal generators, every platform signal generator correspondence is connected on signaling switch, signaling switch is connected to electric bridge by power amplifier, each signaling switch connects two power amplifiers respectively, connection is switched by switch, 3dB electric bridge is connected with duplexer by dual directional coupler, the plug-in load of electric bridge, forward and the reverse coupled end of dual directional coupler are connected two terminals of binary channels power meter respectively, duplexer is connected with frequency spectrograph by detection port, duplexer is connected to detection piece, detection piece is connected with attenuator by filter, the plug-in load of detection piece, attenuator is connected with frequency spectrograph.The utility model is by checking that device is in the operating state of peak power and average power and technical indicator, differentiates device performance quality, thus ensures the communication capacity of whole communication system and the demand of speech quality, reduce system interference from source.
Description
technical field
The utility model relates to communication technical field, especially relates to a kind of binary channels passive device power margin test macro.
Background technology
Along with the increase of Utilities Electric Co.'s communication network capacity, passive device becomes more and more important as part very important in network, the quality of passive device performance index directly has influence on the network quality of whole communication system, and the performance index therefore investigating passive device become very necessary.
In multi-channel wireless communication system, radio-frequency (RF) energy transmission can make resistance and dielectric dissipation and then produce heat energy, thus aging, the distortion causing device and the voltage flash phenomenon likely occurred.Wherein: arcing phenomena is because power margin is not enough, particularly not enough to the ability to bear of peak power, produce abnormal heating, spark phenomenon, thus cause the end to make an uproar rising, cause the interference of whole system, its harm is very serious.
Power margin test be examination passive device problem can not be caused to disturb for the heat energy caused by maximum input signal maximumly bear limit.Be mainly used in the important detection technique of Design and manufacture checking passive device, it by radiofrequency signal after power amplifier amplifies, by checking whether device performance worsens the performance quality judging the resistance to high-peak power of device.Along with the development of the communication technology, the high-power power load that passive device is born that prevailing network is on the increase is more and more heavier, therefore the probability producing system interference constantly promotes, in order to the communication capacity of safeguards system and the demand of speech quality, reduce system interference from source, be necessary to carry out power margin test to passive device.
Utility model content
The utility model will solve the shortcoming of above-mentioned prior art, provides a kind of binary channels passive device power margin test macro that can be applied in the communication networks such as antenna, duplexer, mixer, power splitter, directional coupler, 3dB electric bridge, cable, load.This system has standard signal source and supports that monitor power detects and the binary channels power meter of standing wave variable quantity, this test macro stable performance, low in energy consumption, easy and simple to handle, be convenient to the plurality of advantages such as flexible combination expansion.This test macro can solve the test of communication device supplier to base station antenna feeder system passive device power margin indexs such as antenna, duplexer, mixer, cables.
The utility model solves the technical scheme that its technical problem adopts:
Binary channels passive device power margin test macro, comprise two signal generators, every platform signal generator correspondence is connected on signaling switch, signaling switch is connected to 3dB electric bridge by power amplifier, each signaling switch connects two power amplifiers respectively, connection is switched by switch, 3dB electric bridge is connected with duplexer by dual directional coupler, the plug-in load of 3dB electric bridge, forward and the reverse coupled end of dual directional coupler are connected two terminals of binary channels power meter respectively, duplexer is connected with frequency spectrograph by detection port, duplexer is connected to detection piece, detection piece is connected with attenuator by filter, the plug-in load of detection piece, attenuator is connected with frequency spectrograph.
Computer remote connection control supported by described power amplifier.
Power amplifier comprises Switching Power Supply, circulator, high-power filtering, control circuit.
Described power amplifier uses 28V direct current supply.
Described binary channels passive device power margin test macro, possesses power source short-circuit protection, blasting protection, overcurrent protection, overvoltage protection, crosses vswr protection and over-temperature protection.
The effect that the utility model is useful is:
This test macro is by checking that device is in the operating state of peak power and average power and technical indicator, differentiates device performance quality, thus ensures the communication capacity of whole communication system and the demand of speech quality, reduce system interference from source.System supports the modulated carrier signal of GSM900 and DCS1800, is monitored by frequency spectrograph, selects the peak power of the average power 2000W of 500W, guarantees 4 road carrier (boc) modulated signals of the different systems realizing being not less than 50W; Every road power model can send into the full-time gap modulated carrier of 2 different frequent points in worked scope, can be equipped with power and have larger redundancy, with the reliability of guaranteed output and useful life.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model binary channels passive device power margin test macro.
Description of reference numerals: signal generator 101, signaling switch 102, power amplifier 103,3dB electric bridge 104, load 105, dual directional coupler 106, duplexer 107, measured piece 108, filter 109, attenuator 110, frequency spectrograph 111, power meter 112.
Embodiment
As tried hard to shown in 1, the utility model binary channels passive device power margin test macro, comprise two signal generators 101, every platform signal generator 101 correspondence is connected on signaling switch 102, signaling switch 102 is connected to 3dB electric bridge 104 by power amplifier 103, each signaling switch connects two power amplifiers respectively, connection is switched by switch, 3dB electric bridge is connected with duplexer 107 by dual directional coupler 106, the plug-in load 105 of 3dB electric bridge 104, forward and the reverse coupled end of dual directional coupler 106 are connected two terminals of binary channels power meter 112 respectively, duplexer 107 is connected with frequency spectrograph 111 by detection port, duplexer 107 is connected to detection piece 108, detection piece 108 is connected with attenuator 110 by filter 109, the plug-in load 105 of detection piece 108, attenuator 110 is connected with frequency spectrograph 111.
As preferably, described power amplifier connects computer by RCI.
As preferably, described power amplifier comprises Switching Power Supply, circulator, high-power filtering, control circuit.
As preferably, described power amplifier uses 28V direct current supply.
As preferably, said system possesses power source short-circuit protection, blasting protection, overcurrent protection, overvoltage protection, crosses vswr protection and over-temperature protection.
Signal generator requires, for vector signal generator, to support GSM/GPRS/EDGE standard, can produce single carrier and multi-carrier signal; Operating frequency range should meet the requirement producing China Mobile GSM and DCS frequency band signals; Good phase noise performance should be had, produce high-quality single carrier and multi-carrier signal.
Frequency spectrograph needs to support GSM/GPRS/EDGE standard; DNAL in GSM frequency range not higher than-160dBm/Hz.
Power amplifier can amplify single-channel carrier signal or two-way carrier signal respectively; Power amplifier working frequency range is 930MHz-960MHz; Support mode is continuous wave and impulse wave; Average power is 650W, and peak value is 2600W; There is automatic protection functions, can unsafe signal be disconnected in time and send alarm, standing wave alarm function will be had simultaneously, the relevant device of protection system and test instrumentation.
Test accessories for system building should be selected according to the requirement of system building, its general requirement is that the test accessories for transmitting high-power signal is necessary for large power test annex, the test accessories of Intermodulation Interference may be caused to be necessary for low intermodulation testing annex simultaneously; The configuration quantity of test accessories should be able to meet the power margin test request of four power splitters.
In order to reduce the testing time, high-low temperature chamber can be adopted in test process to simulate hot environment, powering up plus signal like this and carrying out the testing time and can shorten to 10 minutes by 30 minutes, thus improving testing efficiency.High-low temperature chamber requires as can be warming up to 55 DEG C; Can carry out program control; Possess the standard configurations such as glass vision panel, test product frame and test lead hole; There is safety protection function, can carry out leaking electricity, short circuit, overload, overcurrent, overtemperature, motor overheating, the protection such as compressor superpressure.
Radiofrequency signal flows to: signal generator 101 → signaling switch 102 → power amplifier 102 → 3dB electric bridge 104 → dual directional coupler 106 → duplexer 107 → measured piece 108 → filter 109 → attenuator 110 → frequency spectrograph 111.Signal generator 101 exports CW signal, carrier signal, pulse signal etc. by test specification requirement, be input to power amplifier 102, amplify step by step through power amplifier, the TX port arriving large duplexer 107 behind road is closed again through mixer, measured piece is arrived again through duplexer 107 signal, device 109 and attenuator 110 after filtering successively again, receives on frequency spectrograph 111.Enabling signal generator 101 during test, operation signal switch 102, when power meter 112 reading arrives in test specification, frequency spectrograph 111 is observed waveform with or without flying fox or back noise lifting phenomenon, if any flying fox or back noise lifting phenomenon, show that measured piece 108 produces sparking; If any standing wave alarm, then show that equipment has the possibility producing sparking.
The utility model have employed following key technology:
Employing binary channels designs, and supports binary channels concurrent testing, improves testing efficiency.
In the hardware designs of test macro, equally there is automatic protection functions.For the crucial testing equipment in test macro, such as, special protection mechanism is devised to spectrum analyzer, signal generator, power amplifier, binary channels power meter, high-low temperature chamber, power supply etc.
Test macro integrated in, consider the heat dispersal situations of whole test macro comprehensively.Under whole test macro is operated in power rating, a large amount of heats can be produced, have influence on the stability of test macro.Therefore in test macro is integrated, we have taken into full account the heat sinking function of test cabinet, optimize the fixed position of testing equipment in rack simultaneously, avoid interference mutually occurs between each equipment of test macro.
The special hardware protection module in power amplifier indoor design; when power amplifier reflected standing wave ratio be greater than power amplifier bear limit value time; power amplifier can be closed in time when hardware protection module detects this standing-wave ratio; disconnect unsafe signal, indicator light alarm and buzzing alarm can be carried out simultaneously.
On hardware integration, power amplifier module is added in system support, carries out power amplifier module cascaded design, realizes the expansion of working frequency range.Test macro is all equipped with isolator (isolator) at input and output side, and signal transmission path is launched according to the circuit of regulation, avoids because of the interference of signal transmitting to instrument and meter.The power supply of test macro passes through software control; there is various intelligent protection; when power supply is subject to foreign impacts; energy self-protection also accomplishes prevention & protection to other equipment of system; when load transients change, when exceeding rated output power, power supply can proceed to overload protection state; reduced output voltage or stopping export, thus realize the defencive function to power amplifier and miscellaneous equipment.
Test macro adopts structurized EMC Design, mainly by the determination of material selection, version with to the suppression of shield opening seam leakage, reduces and prevents electromagnetic interference.We mainly through rational deployment in assembly, set up the selecting of shielded partitions, connector, into and out of air port, the measures such as gauze screen be housed.
Claims (5)
1. binary channels passive device power margin test macro, it is characterized in that: comprise two signal generators, every platform signal generator correspondence is connected on signaling switch, signaling switch is connected to 3dB electric bridge by power amplifier, each signaling switch connects two power amplifiers respectively, connection is switched by switch, 3dB electric bridge is connected with duplexer by dual directional coupler, the plug-in load of 3dB electric bridge, forward and the reverse coupled end of dual directional coupler are connected two terminals of binary channels power meter respectively, duplexer is connected with frequency spectrograph by detection port, duplexer is connected to detection piece, detection piece is connected with attenuator by filter, the plug-in load of detection piece, attenuator is connected with frequency spectrograph.
2. according to the binary channels passive device power margin test macro described in claim 1, it is characterized in that: computer remote connection control supported by described power amplifier.
3., according to the binary channels passive device power margin test macro described in claim 1, it is characterized in that: power amplifier comprises Switching Power Supply, circulator, high-power filtering, control circuit.
4. binary channels passive device power margin test macro according to claim 1, is characterized in that: described power amplifier uses 28V direct current supply.
5. binary channels passive device power margin test macro according to claim 1, is characterized in that: possess power source short-circuit protection, blasting protection, overcurrent protection, overvoltage protection, cross vswr protection and over-temperature protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420598774.4U CN204206186U (en) | 2014-10-16 | 2014-10-16 | Binary channels passive device power margin test macro |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420598774.4U CN204206186U (en) | 2014-10-16 | 2014-10-16 | Binary channels passive device power margin test macro |
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| CN204206186U true CN204206186U (en) | 2015-03-11 |
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| CN201420598774.4U Active CN204206186U (en) | 2014-10-16 | 2014-10-16 | Binary channels passive device power margin test macro |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104301049A (en) * | 2014-10-16 | 2015-01-21 | 国家电网公司 | Dual-channel passive device power tolerance testing system |
| CN113484633A (en) * | 2021-06-07 | 2021-10-08 | 中国工程物理研究院应用电子学研究所 | Shielding effectiveness test system and method suitable for electromagnetic protection performance test of artificial material |
-
2014
- 2014-10-16 CN CN201420598774.4U patent/CN204206186U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104301049A (en) * | 2014-10-16 | 2015-01-21 | 国家电网公司 | Dual-channel passive device power tolerance testing system |
| CN113484633A (en) * | 2021-06-07 | 2021-10-08 | 中国工程物理研究院应用电子学研究所 | Shielding effectiveness test system and method suitable for electromagnetic protection performance test of artificial material |
| CN113484633B (en) * | 2021-06-07 | 2023-04-21 | 中国工程物理研究院应用电子学研究所 | Shielding efficiency test system and method suitable for electromagnetic shielding performance test of artificial material |
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