CN105656569A - Wireless signal measurement system - Google Patents
Wireless signal measurement system Download PDFInfo
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- CN105656569A CN105656569A CN201610147906.5A CN201610147906A CN105656569A CN 105656569 A CN105656569 A CN 105656569A CN 201610147906 A CN201610147906 A CN 201610147906A CN 105656569 A CN105656569 A CN 105656569A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/0082—Monitoring; Testing using service channels; using auxiliary channels
- H04B17/0087—Monitoring; Testing using service channels; using auxiliary channels using auxiliary channels or channel simulators
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/10—Monitoring; Testing of transmitters
- H04B17/15—Performance testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
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Abstract
The invention relates to a wireless signal measurement system. The wireless signal measurement system comprises a wireless device to be measured, a radiating antenna group, a device accompanied for measurement, a testing master controller and a signal propagation and simulation device, wherein the wireless device to be measured and the radiating antenna group are located in a first closed space, the device accompanied for measurement and the testing master controller are located in a second closed space, and the signal propagation and simulation device is located between the first closed space and the second closed space. Both the first closed space and the second closed space have the conditions of a free space. The signal propagation and simulation device is used for simulating a wireless signal propagation mode, conducts channel simulation processing on the data sent by the wireless device to be measured and received by the radiating antenna group and then transmits the data to the device accompanied for measurement, or the signal propagation and simulation device conducts channel simulation processing on the data sent by the device accompanied for measurement and then sends the data to the wireless device to be measured through the radiating antenna group. The wireless signal measurement system can simulate different propagation modes including reflection, diffraction, perpendicular incidence and the like of signals transmitted or received by the wireless device to be measured and replaces an actual testing and verification place, and the testing performance and testing efficiency of the signal measurement system can be improved.
Description
Technical field
The present invention relates to wireless communication technology field, particularly relate to a kind of wireless signal measuring system.
Background technology
Along with the standard of IEEE802.11 series constantly advances, advance and the practicality of its technology constantly improve, all kinds of radio communication product need to possess good transmitting and receptivity, can ensure communication quality, could provide more excellent voice-and-data business for users. Studying through for many years, testing method and device about the space radiation performance index in SISO (singleinputsingleoutput, single-input single-output) system are very ripe, especially gsm system.
Nowadays carrying out the 4G epoch such as 3G and even follow-up LTE (LongTermEvolution, long-term evolution), SISO system can not satisfy the demands far away. In new high-speed high-quality amount wireless communication system, usually all can use MIMO (MultipleInputMultipleOutput, multiple-input and multiple-output) system. But due to the test performance of conventional wireless Signal Measurement System lower, cannot support the requirement of the new technologies such as MIMO, the scheme that especially performance test of the radio communication product in mimo system is at present still imperfect.
Summary of the invention
Based on this, it is necessary to for the problem that conventional wireless Signal Measurement System performance is lower, it is provided that a kind of wireless signal measuring system.
A kind of wireless signal measuring system, comprising: in the wireless Devices to test of the first enclosed space and radiating antenna group, propagate simulator at accompany measurement equipment and the test master, signal between described first enclosed space and the 2nd enclosed space of the 2nd enclosed space; Described first enclosed space, the 2nd enclosed space all possess the condition of freeboard; Described radiating antenna group, signal are propagated simulator, are accompanied measurement equipment to be connected by radio frequency cable successively; Described measurement equipment is accompanied also to be connected with test master;
Described signal propagates simulator, for analog wireless signals propagation model, and be sent to after the data sent by wireless Devices to test of the described wireless reception of radiating antenna group are carried out channel simulation process and accompany measurement equipment, or described signal propagate simulator the described data accompanying measurement equipment to transmit are carried out channel simulation process after be wirelessly transmitted to wireless Devices to test by radiating antenna group.
Wherein in an embodiment, described signal is propagated simulator and is comprised interconnective transmission model emulator and losser; Described transmission model emulator, transmission of wireless signals model when there is obstacle for analog radio ripple channel; Described losser, for simulating the signal propagation losses of freeboard.
Wherein in an embodiment, described transmission model emulator comprises Signal separator device, the first signal generator, second signal maker, circuit delay device and signal syntheses device;
Described Signal separator device, for the input signal of described transmission model emulator is separated into two paths of signals, and is sent in the first signal generator and second signal maker respectively; Described first signal generator, second signal maker, export two-way phase place and all not identical signal of amplitude respectively according to respective input signal; Described circuit delay device, for carrying out delay process to the signal that described second signal maker exports; Described signal syntheses device, for the signal that described first signal generator, circuit delay device export is merged into a road signal, and is sent to described losser.
Wherein in an embodiment, described first signal generator comprises the first signal sampling unit, switch and the first phase delay unit that connect successively; One of them input terminus of described first signal sampling unit is the input terminus of described first signal generator, and the output terminal of described first signal sampling unit is the output terminal of described first signal generator.
Wherein in an embodiment, described second signal maker comprises the second signal sampling unit, attenuation units, the second phase delay unit that connect successively; One of them input terminus of described second signal sampling unit is the input terminus of described second signal maker, and the output terminal of described second signal sampling unit is the output terminal of described second signal maker.
Wherein in an embodiment, described first enclosed space is provided by microwave unreflected chamber.
Wherein in an embodiment, in described microwave unreflected chamber, absorbing material is set, and described absorbing material comprise absorption flat plate, inhale ripple and split point, inhale ripple and put down in cone one or more.
Wherein in an embodiment, in described microwave unreflected chamber, it is provided with rotation platform, and described rotation platform is for placing described wireless Devices to test.
Wherein in an embodiment, described 2nd enclosed space is provided by shielded cell, and is provided with absorption flat plate in described shielded cell.
Wherein in an embodiment, described in accompany measurement equipment to comprise radio frequency switching device and some reception/launch terminals being in different operating frequency range; Each described reception/launch terminal switches device by described radio frequency and is switched on or switched off the connection propagating simulator with described signal.
The useful effect that above-mentioned wireless signal measuring system has is: in this wireless signal measuring system, wireless Devices to test and radiating antenna group are all positioned at the first enclosed space, measurement equipment and test master is accompanied all to be positioned at the 2nd enclosed space, simultaneously the first enclosed space and the 2nd enclosed space all possess the condition of freeboard, thus for wireless Devices to test with accompany measurement equipment to provide a pure electromagnetic environment.
Simultaneously, between wireless Devices to test and the communication link accompanying measurement equipment, also there is signal propagate simulator, and this signal propagates simulator for analog wireless signals propagation model, and be sent to after the data sent by wireless Devices to test of wireless for radiating antenna group reception are carried out channel simulation process and accompany measurement equipment, or signal propagate simulator the data accompanying measurement equipment to transmit are carried out channel simulation process after be wirelessly transmitted to wireless Devices to test by radiating antenna group.
Therefore this wireless signal measuring system is for wireless Devices to test and accompany measurement equipment to provide on the basis without external interference and the test environment of weak reflection, wireless Devices to test can also be simulated launch or the different communication mode such as the reflection of Received signal strength, diffraction, direct projection, instead of actual testing authentication place such that it is able to improve test performance and the test efficiency of Signal Measurement System.
Accompanying drawing explanation
The composition structural representation of the wireless signal measuring system that Fig. 1 provides for an embodiment.
Fig. 2 is the composition structural representation that in wireless signal measuring system embodiment illustrated in fig. 1, signal propagates simulator.
Fig. 3 is the composition structural representation accompanying measurement equipment in wireless signal measuring system embodiment illustrated in fig. 1.
Embodiment
For the ease of understanding the present invention, below with reference to relevant drawings, the present invention is described more fully. Accompanying drawing gives the better embodiment of the present invention. But, the present invention can realize in many different forms, is not limited to embodiment described herein. On the contrary, it is provided that the object of these embodiments makes the understanding of the disclosure to the present invention more comprehensively thorough.
Unless otherwise defined, all technology used herein are identical with the implication that the those skilled in the art belonging to invention understand usually with scientific terminology. The term used in the specification sheets of invention herein is the object in order to describe specific embodiment, is not intended to restriction the present invention. Term as used herein "and/or" comprises arbitrary and all combinations of one or more relevant Listed Items.
As shown in Figure 1, in one embodiment, wireless signal measuring system is the measuring system being based upon the substandard a set of simulation actual network environment of user of IEEE802.11, this system adds signal in test link and propagates simulator 3000, the radio-wave propagation channel of artificial actual is to obtain the propagation model close with actual environment, thus experiences closer to the user network of reality. Next principle is realized by what specifically introduce this wireless signal measuring system.
Wireless signal measuring system comprises wireless Devices to test 1000, radiating antenna group 2000, signal propagation simulator 3000, accompanies measurement equipment 4000 and test master 5000.
In this wireless signal measuring system, wireless Devices to test 1000 and radiating antenna group 2000 can wirelessly transmitting data mutually, and be all positioned at the first enclosed space. Comprising antenna in wireless Devices to test 1000, and radiating antenna group 2000 is positioned at the radiation far field of wireless Devices to test 1000 antenna, radiating antenna group 2000 then is equivalent to accompany the antenna of measurement equipment 4000 one end simultaneously.
Measurement equipment 4000 and test master 5000 is accompanied all to be positioned at the 2nd enclosed space. Simultaneously the first enclosed space, the 2nd enclosed space all possess the condition of freeboard, namely in these two spaces, Electromgnetically-transparent, reflection are few, thus for wireless Devices to test 1000 and accompany measurement equipment 4000 to provide a pure electromagnetic environment, thus improve test efficiency.
In addition, radiating antenna group 2000, signal are propagated simulator 3000, are accompanied measurement equipment 4000 to be connected by radio frequency cable successively. Measurement equipment 4000 is accompanied also to be connected with test master 5000.
Signal propagates simulator 3000, for analog wireless signals propagation model, and be sent to after the data sent by wireless Devices to test 1000 of wireless for radiating antenna group 2000 reception are carried out channel simulation process and accompany measurement equipment 4000, or signal propagate simulator 3000 data accompanying measurement equipment 4000 to transmit are carried out channel simulation process after be wirelessly transmitted to wireless Devices to test 1000 by radiating antenna group 2000. Above-mentioned channel simulation processing example is as carried out the operation such as propagation path loss, phase delay.
As can be seen here in the present embodiment, wireless Devices to test 1000 and accompany the Signal transmissions path between measurement equipment 4000 to comprise two portions altogether: first part is space transmission between wireless Devices to test 1000 and the antenna (and radiating antenna group 2000) accompanying measurement equipment 4000 one end in the first enclosed space; Second section is that signal propagates simulator 3000. Wherein, in the first enclosed space, wireless Devices to test 1000 is equivalent to carry out glitch-free transmission of wireless signals with radiating antenna group 2000, and follow-up signal of being more convenient for like this is propagated simulator 3000 and carried out actual channel simulation.
The principle of work of so above-mentioned wireless signal measuring system is: if wireless Devices to test 1000 launches signal, and this signal is then radiated to space (i.e. space in the first enclosed space) by the antenna in wireless Devices to test 1000. Namely this signal can be accompanied the antenna of measurement equipment 4000 one end (i.e. radiating antenna group 2000) to receive and be sent to signal by radio frequency cable and propagate simulator 3000 and process, transmit with analog wireless channel this signal is caused propagation path loss, the situation such as phase delay. Signal after process is sent to by radio frequency cable and accompanies measurement equipment 4000 by signal propagation simulator 3000 again, thus establishes communication link, completes the half period of communication. With reason, after accompanying measurement equipment 4000 also can launch signal and carry out above-mentioned identical process, finally received by wireless Devices to test 1000, thus complete the another half period of communication.
Therefore, the wireless signal measuring system that the present embodiment provides is for wireless Devices to test 1000 and accompany measurement equipment 4000 to provide on the basis without external interference and the test environment of weak reflection, wireless Devices to test 1000 can also be simulated launch or the different communication mode such as the reflection of Received signal strength, diffraction, direct projection, instead of actual testing authentication place such that it is able to improve test performance and the test efficiency of Signal Measurement System further.
Concrete, in above-mentioned wireless signal measuring system, as shown in Figure 2, signal is propagated simulator 3000 and is comprised interconnective transmission model emulator 3100 and losser 3200. Wherein, transmission model emulator 3100, transmission of wireless signals model when there is obstacle for analog radio ripple channel, thus build the propagation path loss of wireless signal, phase delay etc. Losser 3200, for simulating the signal propagation losses of freeboard.
In the present embodiment, losser 3200 is program control losser, it is possible to reduce the signal amplitude of wireless transmission link according to demand, thus reaches the object of the signal propagation losses of simulation freeboard. Simultaneously, transmission model emulator 3100 and the concrete circuit connecting relation of losser 3200 be: the input terminus of transmission model emulator 3100 is the input terminus that signal propagates simulator 3000, the output terminal of transmission model emulator 3100 is connected with the input terminus of losser 3200, and the output terminal of losser 3200 is the output terminal that signal propagates simulator 3000.
So, simulator 3000 is propagated for above-mentioned signal, after receiving input signal, signal first carries out the process such as associated propagation path loss decline, phase delay by transmission model emulator 3100, transmits model emulator 3100 afterwards and is processed by the data feeding losser 3200 after process. Therefore, the signal in the present embodiment propagate simulator 3000 can the transmission model of full-scope simulation radiowave channel by transmission model emulator 3100 and losser 3200 so that test more accurate.
It should be appreciated that the concrete structure that signal propagates simulator 3000 is not limited to above-mentioned a kind of situation, as long as can analog wireless signals propagation model.
Concrete, as shown in Figure 2, to propagate in simulator 3000 at above-mentioned signal, transmission model emulator 3100 comprises Signal separator device 3110, first signal generator 3120, second signal maker 3130, circuit delay device 3140 and signal syntheses device 3150.
Wherein, the input terminus of Signal separator device 3110 is the input terminus of transmission model emulator 3100, the output terminal of Signal separator device 3110 respectively input terminus with the first signal generator 3120, second signal maker 3130 be connected. The output terminal of the first signal generator 3120 is connected with the input terminus of signal syntheses device 3150. The output terminal of second signal maker 3130 is by another input terminus of circuit delay device 3140 connection signal synthesizer 3150. The output terminal of signal syntheses device 3150 is the output terminal of transmission model emulator 3100.
Signal separator device 3110, for the input signal of transmission model emulator 3100 (namely signal propagates the input signal of simulator 3000) is separated into two paths of signals, and it is sent to respectively in the first signal generator 3120 and second signal maker 3130. Wherein, transmit model emulator 3100 input signal be the signal accompanying measurement equipment 4000 to transmit or radiating antenna group 2000 transmit by the signal of the wireless wireless transmission of Devices to test 1000. Power divider such as selected by Signal separator device 3110.
First signal generator 3120, second signal maker 3130, export two-way phase place and all not identical signal of amplitude, namely generate the different multipath signal of two-way according to respective input signal (two paths of signals that namely Signal separator device 3110 exports). That is, the first signal generator 3120, second signal maker 3130 are main carries out the different treating processes such as amplitude and power reduction, phase delay to signal, thus exports two-way phase place and all not identical signal of amplitude.
Above-mentioned first signal generator 3120 specifically comprises the first signal sampling unit 3121, switch 3122 and the first phase delay unit 3123 that connect successively. Wherein, one of them input terminus of the first signal sampling unit 3121 is the input terminus of the first signal generator 3120, and the output terminal of the first signal sampling unit 3121 is the output terminal of the first signal generator 3120.
Specifically, the first signal sampling unit 3121 such as selects directional coupler. Switch 3122 and first phase delay unit 3123 control by test master 5000. Switch 3122 is high speed switch, and its speed carrying out open and close switching should meet the transmission requirement of analog radio ripple channel.
So in above-mentioned first signal generator 3120, after receiving the road input signal that Signal separator device 3110 transmits, this input signal, under the switching control of switch 3122 and after first phase delay unit 3123 carries out phase delay process, exports signal syntheses device 3150 to eventually through the first signal sampling unit 3121.
Above-mentioned second signal maker 3130 specifically comprises the second signal sampling unit 3131, attenuation units 3132, the second phase delay unit 3133 that connect successively. Wherein, one of them input terminus of second signal sampling unit 3131 is the input terminus of second signal maker 3130, and the output terminal of second signal sampling unit 3131 is the output terminal of second signal maker 3130.
Specifically, second signal sampling unit 3131 such as selects directional coupler. Attenuation units 3132 such as selects program control losser. Attenuation units 3132 and second phase delay unit 3133 control by test master 5000.
So in above-mentioned second signal maker 3130, after receiving another road input signal that Signal separator device 3110 transmits, this input signal carries out the treating processes different from the first signal generator 3120, it is specially this input signal and is both carried out power and amplitude decay by attenuation units 3132, carry out phase delay through second phase delay unit 3133 again, sample unit 3131 eventually through second signal and export circuit delay device 3140 to.
Circuit delay device 3140, for carrying out delay process to the signal that second signal maker 3130 exports.
Signal syntheses device 3150, for the signal that the first signal generator 3120, circuit delay device 3140 export is merged into a road signal, and is sent to losser 3200. Power divider such as selected by signal syntheses device 3150.
So, for above-mentioned transmission model emulator 3100, its concrete principle of work is: input signal is separated into two paths of signals by Signal separator device 3110, this two paths of signals forms two-way phase place and all different signal of amplitude after being processed by the first signal generator 3120, second signal maker 3130 respectively. Meanwhile, the signal that second signal maker 3130 is formed after processing also to be carried out delay process by circuit delay device 3140. Finally, the signal that the signal that finally drawn by the first signal generator 3120 by signal syntheses device 3150, circuit delay device 3140 are formed after processing carries out superposition, thus completes transmission of wireless signals modeling process when radiowave channel exists obstacle.
It should be appreciated that the concrete structure of transmission model emulator 3100 is not limited to above-mentioned a kind of situation, as long as can the transmission of wireless signals model of analog radio ripple channel when there is obstacle.
Concrete, as shown in Figure 1, above-mentioned first enclosed space is provided by microwave unreflected chamber 6000. Microwave unreflected chamber 6000 is a standard-sized rectangle microwave darkroom.
Meanwhile, in order to meet the propagation demand of the modern techniquies such as MIMO signal, microwave unreflected chamber 6000 is provided with the absorbing material with different receptivity. In the present embodiment, absorbing material comprise absorption flat plate 6100, inhale ripple split point 6200, inhale ripple put down cone 6300 in one or more. In addition, above-mentioned dissimilar absorbing material is according to the difference inhaling intensity of wave, in six planes being distributed in microwave unreflected chamber 6000 of rule, so that the reflection of hertzian wave and absorption are in equilibrium state, not only met MIMO signal have effect spread but also meet the reliability of this wireless signal measuring system and test data repeatable.
Concrete, also it is provided with rotation platform 7000 in above-mentioned microwave unreflected chamber 6000, and rotation platform 7000 is for placing wireless Devices to test 1000. Rotation platform 7000 is made up of the dielectric material of low dielectric simultaneously, to avoid, wireless Devices to test 1000 is caused interference. Certainly, wireless Devices to test 1000 is not limited to be positioned over this kind of form of rotation platform 7000, it is also possible to other modes are positioned in microwave unreflected chamber 6000, as long as normally can communicate with radiating antenna group 2000.
Concrete, as shown in Figure 1, the 2nd enclosed space is provided by shielded cell 8000, and is provided with absorption flat plate 6100 in shielded cell 8000. This shielded cell 8000 has identical function with microwave unreflected chamber 6000.
It is understandable that, first enclosed space, the 2nd enclosed space are not limited to above-mentioned a kind of set-up mode, as long as the condition of freeboard can be possessed, such as the first enclosed space, the 2nd enclosed space are provided by shielded cell 8000, microwave unreflected chamber 6000 respectively conversely.
Concrete, as shown in Figure 3, accompany measurement equipment 4000 to comprise radio frequency switching device 4200 and some reception/launch terminals 4100 being in different operating frequency range. Each reception/launch terminal 4100 switches device 4200 by radio frequency and is switched on or switched off the connection propagating simulator 3000 with signal. Therefore, each reception/launch terminal 4100 can switch device 4200 by radio frequency as required and carry out free switching, thus meets different test demands.
Wherein, reception/launch terminal 4100 not only can launch signal but also can Received signal strength, and the quantity of reception/launch terminal 4100 should be identical with the quantity of antenna in radiating antenna group 2000. Reception/launch terminal 4100 is installed on test master 5000 simultaneously. Radio frequency switching device 4200 is controlled by test master 5000.
In addition, in the present embodiment, auxiliary test controller in the first enclosed space, also it is provided with, for providing the operation of test procedure, content measurement and test data computing etc. In other embodiments, certainly, the function that auxiliary test controller realizes also can directly be realized by test master 5000.
In sum, in the wireless signal measuring system that this enforcement provides, wireless Devices to test 1000 (such as wireless AP) and accompany measurement equipment 4000 (such as wireless STA) lay respectively at provide by microwave unreflected chamber 6000 and shielded cell 8000 the first enclosed space, in the 2nd enclosed space, and the mode being coupled by antenna is communicated. Wherein, microwave unreflected chamber 6000 and shielded cell 8000 provide without the test environment of external interference and weak reflection. On this basis, it is provided with signal between microwave unreflected chamber 6000 and shielded cell 8000 and propagates simulator 3000, inputting corresponding mould parameter number by software, calculating simulation obtains travel path and the mode of spacing wireless signal, thus reaches with reality test that field is consistent tests effect. Therefore, this wireless signal measuring system not only facilitates product performance detection, also improves test efficiency.
Each technology feature of the above embodiment can combine arbitrarily, for making description succinct, each all possible combination of technology feature in above-described embodiment is not all described, but, as long as the combination of these technology features does not exist contradiction, all it is considered to be the scope that this specification sheets is recorded.
The above embodiment only have expressed several enforcement modes of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent. , it is also possible to make some distortion and improvement, it should be appreciated that for the person of ordinary skill of the art, without departing from the inventive concept of the premise these all belong to protection scope of the present invention. Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a wireless signal measuring system, it is characterized in that, comprising: in the wireless Devices to test of the first enclosed space and radiating antenna group, propagate simulator at accompany measurement equipment and the test master, signal between described first enclosed space and the 2nd enclosed space of the 2nd enclosed space; Described first enclosed space, the 2nd enclosed space all possess the condition of freeboard; Described radiating antenna group, signal are propagated simulator, are accompanied measurement equipment to be connected by radio frequency cable successively; Described measurement equipment is accompanied also to be connected with test master;
Described signal propagates simulator, for analog wireless signals propagation model, and be sent to after the data sent by wireless Devices to test of the described wireless reception of radiating antenna group are carried out channel simulation process and accompany measurement equipment, or described signal propagate simulator the described data accompanying measurement equipment to transmit are carried out channel simulation process after be wirelessly transmitted to wireless Devices to test by radiating antenna group.
2. wireless signal measuring system according to claim 1, it is characterised in that, described signal is propagated simulator and is comprised interconnective transmission model emulator and losser; Described transmission model emulator, transmission of wireless signals model when there is obstacle for analog radio ripple channel; Described losser, for simulating the signal propagation losses of freeboard.
3. wireless signal measuring system according to claim 2, it is characterised in that, described transmission model emulator comprises Signal separator device, the first signal generator, second signal maker, circuit delay device and signal syntheses device;
Described Signal separator device, for the input signal of described transmission model emulator is separated into two paths of signals, and is sent in the first signal generator and second signal maker respectively; Described first signal generator, second signal maker, export two-way phase place and all not identical signal of amplitude respectively according to respective input signal; Described circuit delay device, for carrying out delay process to the signal that described second signal maker exports; Described signal syntheses device, for the signal that described first signal generator, circuit delay device export is merged into a road signal, and is sent to described losser.
4. wireless signal measuring system according to claim 3, it is characterised in that, described first signal generator comprises the first signal sampling unit, switch and the first phase delay unit that connect successively; One of them input terminus of described first signal sampling unit is the input terminus of described first signal generator, and the output terminal of described first signal sampling unit is the output terminal of described first signal generator.
5. wireless signal measuring system according to claim 3, it is characterised in that, described second signal maker comprises the second signal sampling unit, attenuation units, the second phase delay unit that connect successively; One of them input terminus of described second signal sampling unit is the input terminus of described second signal maker, and the output terminal of described second signal sampling unit is the output terminal of described second signal maker.
6. wireless signal measuring system according to claim 1, it is characterised in that, described first enclosed space is provided by microwave unreflected chamber.
7. wireless signal measuring system according to claim 6, it is characterised in that, in described microwave unreflected chamber, absorbing material is set, and described absorbing material comprise absorption flat plate, inhale ripple and split point, inhale ripple and put down in cone one or more.
8. wireless signal measuring system according to claim 6, it is characterised in that, it is provided with rotation platform in described microwave unreflected chamber, and described rotation platform is for placing described wireless Devices to test.
9. according to wireless signal measuring system described in any claim in claim 1 to 8, it is characterised in that, described 2nd enclosed space is provided by shielded cell, and is provided with absorption flat plate in described shielded cell.
10. according in claim 1 to 8 described in any claim wireless signal measuring system, it is characterised in that, described in accompany measurement equipment to comprise radio frequency switching device and some reception/launch terminals being in different operating frequency range; Each described reception/launch terminal switches device by described radio frequency and is switched on or switched off the connection propagating simulator with described signal.
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| CN111600666A (en) * | 2020-05-13 | 2020-08-28 | 深圳市共进电子股份有限公司 | Wireless communication simulation test system |
| CN112567254A (en) * | 2018-08-14 | 2021-03-26 | 蓝博测试有限公司 | Improved antenna system measuring device |
| CN113364534A (en) * | 2020-03-04 | 2021-09-07 | 佛山市云米电器科技有限公司 | Antenna testing method, device and computer readable storage medium |
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