阅读说明：本技术 无线通信装置空中传输量测系统 (Wireless communication device air transmission measurement system ) 是由 黄正光 何松林 简郅融 陈建旻 邱宗文 于 2018-05-21 设计创作，主要内容包括：一种无线通信装置空中传输量测系统,包括电波暗室、待测装置、至少一第一测试天线以及复数个第二测试天线。待测装置具有至少一待测天线,设置于电波暗室内。第一测试天线设置于电波暗室内且距离待测装置第一远场距离,第一测试天线所发出的电磁波信号用以代表无线信号源提供给所述待测装置的视线电磁波信号。复数个第二测试天线设置于电波暗室内且距离待测装置第二远场距离,第二远场距离小于第一远场距离,复数个第二测试天线所发出的电磁波用以代表无线信号源提供给待测装置的多重路径电磁波信号。如此,在电波暗室内的量测可以更接近实际应用情境。(A kind of wireless communication device air transmission measurement system, including anechoic chamber, test system, at least one first test antenna and a plurality of second test antennas.Test system has at least one antenna to be measured, is set in anechoic chamber,.The sight electromagnetic wave signal that first test antenna is set in anechoic chamber, and is supplied to the test system to represent radio signal source apart from the first far field of test system distance, the electromagnetic wave signal that the first test antenna is issued.A plurality of second test antennas are set in anechoic chamber, and apart from the second far field of test system distance, second far field distance is less than the multi-path electromagnetic wave signal that the first far field distance, the electromagnetic wave that a plurality of second test antennas are issued are supplied to test system to represent radio signal source.In this way, the measurement in anechoic chamber, can be closer to practical application situation.)

1. a kind of wireless communication device air transmission measurement system, comprising:

One anechoic chamber,；

One test system has at least one antenna to be measured, is set in the anechoic chamber,；

At least one first test antenna, is set in the anechoic chamber, and apart from the one first far field distance of test system, this is extremely Few one first test antenna and at least one antenna to be measured of the test system transmit electromagnetic wave signal directly with one another, this at least one The sight electricity that the electromagnetic wave signal that first test antenna is issued is supplied to the test system to represent a radio signal source Magnetostatic wave signal；And

A plurality of second tests antennas, are set in the anechoic chamber, and apart from the one second far field distance of test system, this Two far fields distance be less than the first far field distance, those second test antennas and the test system at least one antenna to be measured that This directly transmits electromagnetic wave signal, and the electromagnetic wave that those the second test antennas are issued is supplied to represent the radio signal source One multi-path electromagnetic wave signal of the test system.

2. wireless communication device air transmission measurement system as described in claim 1, which is characterized in that those second test days The number of line is three or more, those the second test antennas surround the surrounding of the test system.

3. wireless communication device air transmission measurement system as described in claim 1, which is characterized in that the wireless communication dress Middle transmission measurement system is emptied to further include:

One multi-input multi export Network Analyzer, connect this at least one first test antenna, those second test antennas with At least one antenna to be measured of the test system, which, which exports Network Analyzer, has a software definition wireless Electricity；

One vector network analyzer connects at least one antenna to be measured of at least one first the test antenna and the test system；

One derailing switch is connected between at least one first test antenna and multi-input multi output Network Analyzer, and It is connected between at least one first test antenna and the vector network analyzer, to control at least one first test antenna Switching condition；And

One computer connects multi-input multi output Network Analyzer, the vector network analyzer and the derailing switch, control The multi-input multi exports Network Analyzer, the vector network analyzer and the derailing switch, to capture metric data, wherein The computer controls the wireless hair of multi-input multi output Network Analyzer according to an input instruction of a user interface The phase, time delay and signal strength of signal are penetrated, it is multiple with this which divides into the sight electromagnetic wave signal Path electromagnetic wave signal, to be provided at least one first test antenna and those the second test antennas respectively.

4. wireless communication device air transmission measurement system as claimed in claim 3, which is characterized in that the wireless communication dress It empties middle transmission measurement system and further includes a channel simulator, it is imitative by the channel which exports Network Analyzer True device connects those the second test antennas.

5. wireless communication device air transmission measurement system as claimed in claim 3, which is characterized in that the wireless communication dress It empties middle transmission measurement system and further includes a turntable and a turntable controller, which is set to being somebody's turn to do in the anechoic chamber, Turntable, the turntable connect the turntable controller, which connects the computer.

6. wireless communication device air transmission measurement system as described in claim 1, which is characterized in that vector network analysis Instrument is to measure total radiant power, total omni-directional sensitivity, equivalent isotropically radiated power and radiation pattern.

7. wireless communication device air transmission measurement system as described in claim 1, which is characterized in that the multi-input multi It exports Network Analyzer and receives and dispatches non-signaling wireless signal to carry out testing throughput.

8. wireless communication device air transmission measurement system as described in claim 1, which is characterized in that those second test days Line is adjustable relative to the position of the test system, and those the second test antennas are adjustable at a distance from the test system Whole.

9. wireless communication device air transmission measurement system as described in claim 1, which is characterized in that those second test days The position of line is adjusted with far from one channel model of foundation at a distance from the test system.

10. wireless communication device air transmission measurement system as described in claim 1, which is characterized in that the test system is Laptop, laptop computer, tablet computer, integrated computer, smart television, small base station, wireless router or intelligent hand Machine.

Technical field

The present invention relates to a kind of wireless communication techniques, and in particular, to a kind of wireless communication device air transmission measurement system System.

Background technique

Wireless communication device necessity has antenna and carries out information transmitting using electromagnetic wave, in various practical application scene institutes Obtained transmission efficiency can have because of electromagnetic wave transmission characteristic it is significantly different, but limited based on antenna performance and product development at This, and various wireless communication devices can not be surveyed in practical application scene one by one, it is passed in the air in anechoic chamber, Defeated (Over The Air, OTA) test is the performance test mode of lower cost.

The antenna measurement traditionally carried out in anechoic chamber, is all using free space (free space) as reference rings Border, radiation pattern, isolation, gain etc. parameter is presented.Also, for the transmission of wireless communication device in anechoic chamber, Performance test, and it is only applicable to unreflected ideal line-of-sight transmission (Line of Sight, LOS) situation, and do not meet true Multi-path (multi-path) effect of application environment.The actual use performance of product is passed through compared to the laboratory test of product Being often can be discrepant, is if desired more had the performance test results close to true application conditions then to need in true field domain Space is tested, but since cost is excessively high, and industrial circle still demand is more inexpensive and the test mode of more efficient benefit.

Summary of the invention

The embodiment of the present invention discloses a kind of wireless communication device air transmission measurement system, this air transmission measurement system packet Include anechoic chamber, test system, at least one first test antenna and a plurality of second test antennas.Test system has at least One antenna to be measured, is set in anechoic chamber,.At least one first test antenna is set in anechoic chamber, and apart to be measured At least one antenna to be measured of the first far field of device distance, at least one first test antenna and test system transmits directly with one another Electromagnetic wave signal, the electromagnetic wave signal that at least one first test antenna is issued are provided to represent a radio signal source To the sight electromagnetic wave signal of the test system.A plurality of second test antennas are set in anechoic chamber, and apart from dress to be measured Set the second far field distance, second far field distance less than the first far field distance, a plurality of second test antennas with it is to be measured At least one antenna to be measured of device transmits electromagnetic wave signal, the electromagnetism that a plurality of second test antennas are issued directly with one another The multi-path electromagnetic wave signal that wave is supplied to test system to represent radio signal source.

Preferably, the number of a plurality of second test antennas is three or more, a plurality of second test antennas Around the surrounding of test system.

Preferably, the wireless communication device air transmission measurement system further includes multi-input multi output network analysis Instrument, vector network analyzer, derailing switch and computer.Multi-input multi exports Network Analyzer connection described at least 1 the At least one antenna to be measured of one test antenna, a plurality of second the test antennas and test system, multi-input multi output Network Analyzer has software-defined radio.The vector network analyzer connection at least one first test antenna and dress to be measured At least one antenna to be measured set.Derailing switch is connected at least one first test antenna and the multi-input multi is defeated It out between Network Analyzer, and is connected between at least one first test antenna and vector network analyzer, to control The switching condition of at least one first test antenna.Computer connection multi-input multi output Network Analyzer, to Network Analyzer and derailing switch are measured, control multi-input multi output Network Analyzer, vector network analyzer and derailing switch are used To capture metric data, wherein the computer controls multi-input multi output network according to the input instruction of user interface Phase, time delay and the signal strength of the wireless transmission signal of analyzer, wireless transmission signal divide into sight electromagnetic wave letter Number with multi-path electromagnetic wave signal, surveyed to be provided at least one first test antenna and described a plurality of second respectively Try antenna.

Preferably, the wireless communication device air transmission measurement system further includes channel simulator, multi-input multi It exports Network Analyzer and a plurality of second test antennas is connected by the channel simulator.

Preferably, the wireless communication device air transmission measurement system further includes turntable and turntable controller, dress to be measured The turntable being placed in anechoic chamber, is installed, the turntable connects the turntable controller, the turntable controller connection meter Calculation machine.

Preferably, the vector network analyzer is to measure total radiant power, total omni-directional sensitivity, equivalent omnidirectional's spoke Penetrate power and radiation pattern.

Preferably, the multi-input multi output Network Analyzer receives and dispatches non-signaling wireless signal to carry out measurement of handling up Examination.

Preferably, a plurality of second test antennas are adjustable and described multiple relative to the position of test system Several second test antennas are adjustable at a distance from test system.

Preferably, the position of a plurality of second tests antennas and far from foundation channel model at a distance from test system and Adjustment.

Preferably, the test system is laptop, laptop computer, tablet computer, integrated computer, intelligence electricity Depending on, small base station, wireless router or smart phone.

In conclusion it is different from traditional measurement system, wireless communication device air transmission provided in an embodiment of the present invention Measurement system can not only measure the far-field radiation field pattern of its antenna of wireless communication device, can also be emulated with hardware environment wireless Communication device is to utilize respectively in two kinds of signals of practical application situation for external wireless signals source (or wireless transmission object) The antenna that first test antenna represents line-of-sight transmission measures, with the multiple road for passing through Ambient using the second test antenna representative Diameter measuring signal.

Detailed description of the invention

Fig. 1 is the architecture diagram of wireless communication device air transmission measurement system provided in an embodiment of the present invention.

Fig. 2 is the configuration schematic diagram of anechoic chamber, provided in an embodiment of the present invention.

Specific embodiment

Wireless transmission of the wireless communication device air transmission measurement system of the embodiment of the present invention to measure test system Performance, test system be, for example, laptop, laptop computer, tablet computer, integrated computer, smart television, small base station, Wireless router or smart phone.Fig. 1 and Fig. 2 are please referred to, Fig. 1 is that wireless communication device provided in an embodiment of the present invention passes in the air The architecture diagram of throughput rate examining system, Fig. 2 are the configuration schematic diagrams of anechoic chamber, provided in an embodiment of the present invention.This wireless communication device Air transmission measurement system includes anechoic chamber, 1, test system 2, at least one first test antenna 31 and a plurality of second Test antenna 32.Test system 2 (may be generally referred to as DUT) has at least one antenna 21 to be measured, is set in anechoic chamber, 1, Such as it is set to a turntable 9 in anechoic chamber, 1.At least one described first test antenna 31 is set in anechoic chamber, 1 And apart from 2 first far field distance d1 of test system, the first test antenna 31 and the antenna to be measured 31 of test system 2 are straight each other Transmitting electromagnetic wave signal is connect, the electromagnetic wave signal that the first test antenna 31 is issued is mentioned to represent a radio signal source The sight electromagnetic wave signal (Line of Sight signal, LOS signal) of the test system 2 is supplied, hereinafter referred to as LOS signal.The quantity of antenna 21 to be measured can be it is a plurality of, and first test antenna 31 quantity be also possible to it is a plurality of.Again Person, a plurality of second tests antennas 32 are set in anechoic chamber, 1 and apart from 2 second far field distance d2 of test system, and described the Two far field distance d2 are less than the first far field distance d1, the antenna to be measured of a plurality of second the test antennas 32 and test system 2 21 transmit electromagnetic wave signal directly with one another, and the electromagnetic wave that a plurality of second test antennas 32 are issued is to represent wireless communication Number source is supplied to the multi-path electromagnetic wave signal (multi-path signal) of test system 2, hereinafter referred to as MUT signal.

With continued reference to FIG. 1, it is more that this air transmission measurement system further includes multiple input in terms of signal and data processing (Multi-Input Multi-Output, MIMO) Network Analyzer 4a is exported again, vector network analyzer 4b, derailing switch 5, is turned Platform controller 6 and computer 7.Computer 7 connect multi-input multi output Network Analyzer 4a, vector network analyzer 4b with Derailing switch 5, control multi-input multi output Network Analyzer 4a, vector network analyzer 4b, derailing switch 5 and turntable controller 6, to control amount flow gauge and capture metric data.Turntable 9 connects turntable controller 6, and turntable controller 6 is to control turntable 9, test system 2 of the ornaments on turntable 9 can be rotated in place.Multi-input multi export Network Analyzer 4a its with software Defined radio (Software-Defined Radio, SDR) and the measurement of intelligent algorithm auxiliary antenna and Parameter analysis, And vector network analyzer 4b can be general commercially available vector network analyzer.Multi-input multi exports Network Analyzer 4a Connection the first test antenna 31, second tests the antenna to be measured 21 of antenna 32 and test system 2, and wherein multi-input multi exports Network Analyzer 4a can connect the second test antenna 32 by channel simulator 8, or not need channel simulator 8 and straight The second test antenna 32 is connect in succession.Channel simulator 8, which has, does the function such as phase adjustment, time delay and signal decaying to signal Can, channel simulator 8 can also connect and be controlled by computer 7.Vector network analyzer 4b connection first test antenna 31 with to Observation line 21.Derailing switch 5 is connected between the first test antenna 31 and multi-input multi output Network Analyzer 4a, and is connected Between the first test antenna 31 and vector network analyzer 4b, and it is controlled by computer 7 to control the first test antenna 31 Switching condition.Computer 7 controls multi-input multi output network point according to the input instruction of its user interface (not shown) Phase, time delay and the signal strength of the wireless transmission signal of analyzer 4a.Multi-input multi exports Network Analyzer 4a's Wireless transmission signal divides into LOS signal and MUT signal, and is provided to the first test antenna 31 and the second test antenna respectively 32.Furthermore derailing switch 5 can also connect a commercially available multi-input multi output base station 4c (or wireless network memory access, Access Point), replace multi-input multi to export Network Analyzer 4a with the transceiver of actual product.

Again referring concurrently to Fig. 1 and Fig. 2, the first test antenna 31 is both configured to mobilizable with the second test antenna 32.Institute The orientation that a plurality of second test antennas 32 are stated relative to test system 2 is adjustable, and a plurality of second test days Line 32 at a distance from test system 2 be also it is adjustable, such as the second test antenna 32 position and far from test system 2 away from It is adjusted from according to the channel model being determined in advance, the type of used channel model is also that can change, and the present invention is simultaneously With no restrictions.The number of second test antenna 32 is, for example, three or more, these second test antennas 32 are around test system 2 Surrounding.When work measures situation in far field, anechoic chamber, 1 must meet far field condition, and the first above-mentioned far field distance is remote with second Field distance must all meet far field condition, that is, the first far field distance d1 and the second far field distance d2 are all greater than or equal to 2D²/ λ, Wherein D is the maximum size of antenna to be measured (or antenna diameter), and λ is the wavelength of electromagnetic wave.In response to the 5th generation mobile communication (5G) The product of technology and the measurement request of Internet of Things (IoT) device, can be divided into three kinds of measurement modes: (a) Passive Test: utilize vector The wireless signal that Network Analyzer 4b is responsible between the first test antenna 31 and antenna to be measured 21 is received and dispatched, and traditional antenna ginseng is completed Quantity is surveyed, comprising: total radiant power (Total Radiated Power, TRP), total omni-directional sensitivity (Total Isotropic Sensitivity, TIS), equivalent isotropically radiated power (Effective Isotropic Radiated Power, EIRP) and the parameters such as radiation pattern (Radiation Pattern).(b) general actively to test: to utilize the first test Antenna 31 is communicated with the antenna to be measured 21 of test system 2, and it is non-signaling that multi-input multi exports Network Analyzer 4a transmitting-receiving (non-signaling) wireless signal also can be switched to carry out handling capacity (throughput) test and be changed to utilize multiple input Multiple output base station 4c replaces the work of multi-input multi output Network Analyzer 4a, is directly surveyed with existing product Examination, test system 2 is then considered as terminal installation at this time.(c) combined type is actively tested: including reception pattern (Rx) and transfer mode (Tx), and with non-signaling wireless signal to carry out testing throughput.Reception pattern (Rx) is simultaneously using the first test antenna 31 Signal transmitting terminal is done with the second test antenna 32 and is treated observation line 21 (receiving end) and is done wireless signal transmission.Transfer mode (Tx) It is that antenna 21 to be measured is allowed (to connect to the first test antenna 31 (receiving end) and the second test antenna 32 simultaneously as signal transmitting terminal Receiving end) do wireless signal transmission.Whether reception pattern (Rx) or transfer mode (Tx), the first test antenna 31 and the second test Antenna 32 has respectively representative signal kinds.In a receiving mode for (Rx), the first test antenna 31 is to represent remote base The LOS signal that platform signal is transmitted without the straight line of reflection, the second test antenna 32 are to represent to pass from remote base platform signal It is handed to the signal near arround test system 2 and after reflection at least once (or repeatedly), is MUT signal.Antenna will be tested The reason of representative signal source divides into two kinds be, in contrast to the practical service condition in application environment of wireless communications products, Long-range base station can directly transmit signal to test system 2, but this is built upon between the two without barrier or obstruction Under the conditions of, and only test system 2 is very close in the remote base platform the case where, remote base platform in most cases Some signal (signal for having deducted straight line transmitting be all belong to this kind of) is understood when sending signal towards 2 direction of test system must It must can just reach test system 2 by reflecting at least once, it can thus be appreciated that the signal from remote base platform is divided into LOS letter Number signal is believed with MUT, and LOS signal only accounts for a part for whole signal strengths that remote base platform is issued, and MUT signal is also The a part for whole signal strengths that remote base platform is issued only is accounted for, LOS signal and the summation of MUT signal may be long-range base Platform issues the summation of whole signals, or less than remote base platform issue whole signals summation (some signals without Method reaches test system 2).According to the distance of both test system 2 and remote base platform, and barrier between the two Environment, so that can result in the environment of signal reflex arround test system 2, LOS signal actually reaches to be measured with MUT signal The position of device 2 allows and to allow signal strength received by test system 2, time delay and phase to have significantly different.One Under kind exemplary case, when channel model will represent clear between test system 2 and remote base platform, LOS signal is not It is zero, and according to institute's Ambient situation to be simulated, first tests the LOS signal and the second test days that antenna 31 is issued The signal strength ratio of both MUT signals that line 32 is issued be it is adjustable, when the intensity increase of MUT signal then represents ring Border degree of reflection increases.Under another exemplary case, when channel model will represent between test system 2 and remote base platform When having barrier, LOS signal can be zero, then only MUT signal.It is this that LOS signal is represented with the first test antenna, with second The mode that test antenna represents MUT signal is to rebuild channel model in (measuring darkroom) space with hardware, can replace biography The channel simulator device emulated in a manner of software algorithm on system.

In conclusion it is different from traditional measurement system, wireless communication device air transmission provided in an embodiment of the present invention Measurement system can not only measure the far-field radiation field pattern of its antenna of wireless communication device, can also be emulated with hardware environment wireless Communication device is to utilize respectively in two kinds of signals of practical application situation for external wireless signals source (or wireless transmission object) The antenna that first test antenna represents line-of-sight transmission measures, with the multiple road for passing through Ambient using the second test antenna representative Diameter measuring signal.

The above description is only an embodiment of the present invention, not to limit to the scope of the patents of the invention.

Appended drawing reference

1: anechoic chamber,

2: test system

21: antenna to be measured

31: the first test antennas

32: the second test antennas

4a: multi-input multi exports Network Analyzer

4b: vector network analyzer

4c: multi-input multi exports base station

5: derailing switch

6: turntable controller

7: computer

8: channel simulator

9: turntable