CN206850780U - A kind of multi-channel power synchronous testing device - Google Patents
A kind of multi-channel power synchronous testing device Download PDFInfo
- Publication number
- CN206850780U CN206850780U CN201720780016.8U CN201720780016U CN206850780U CN 206850780 U CN206850780 U CN 206850780U CN 201720780016 U CN201720780016 U CN 201720780016U CN 206850780 U CN206850780 U CN 206850780U
- Authority
- CN
- China
- Prior art keywords
- interfaces
- antennal interface
- power
- amplification module
- test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The utility model discloses EN regulations RF output power and a kind of multi-channel power synchronous testing device of dependence test item technical field of measurement and test,Including Device under test,Radio frequency testing device and PC,The Device under test includes antennal interface Ant1,Antennal interface Ant2,Antennal interface Ant3 and antennal interface Ant4,The radio frequency testing device includes AntPort1 interfaces,AntPort2 interfaces,AntPort3 interfaces,AntPort4 interfaces,Amplification module,Power probe and data acquisition unit,The antennal interface Ant1,Antennal interface Ant2,Antennal interface Ant3 and antennal interface Ant4 passes through four groups of radio-frequency cables and AntPort1 interfaces respectively,AntPort2 interfaces,AntPort3 interfaces connect with AntPort4 interfaces,The data acquisition unit is connected by USB OUT interfaces with PC,Meet testing standard requirement of the EN regulations on inter-channel synchronization error,Drastically increase test signal level scope.
Description
Technical field
It the utility model is related to EN regulations RF output power and dependence test item technical field of measurement and test, specially one
Kind multi-channel power synchronous testing device.
Background technology
Two standards of ETSI EN300328 and ETSI EN301893 of ETSI's issue, it is intended to propose
2.4GHz and 5GHz broadband wireless access equipment enters the pressure index test requirement needed for European market, i.e. EN laws and regulations requirements,
EN 300328V1.9.1 versions force test to propose new concept and test event requirement to 2.4GHz broadband wireless devices,
As adaptive equipment and non-self-adapting equipment, accumulation transmission time, Hopping frequencies interval, Utilizing Rate, adaptive channel are visited
The test events such as mechanism are asked, while the same pacing of multi-channel power is proposed for multiple antennas (multiple transmit chains)
Examination requires that 4 × 4 paths are supported in peak demand, and EN 301893V1.8.1 versions propose for 5GHz broadband wireless access equipment
Radio-frequency performance and the aspect test request of DFS performances (dynamic frequency selection) two, multi-channel power synchronism detection require that test is set
The precise synchronization standby equipment that can launch multiple antennas carries out more antennas simultaneously is tested, and synchronous error meets a threshold value
It is it is required that and unconventional using every antenna traversal test, then the method that the power of every antenna is overlapped, prior art
In the multi-channel power method of testing that uses of test travel through and test for traditional every antenna of use, then by every antenna unit
The maximum power value that test obtains in time is overlapped.Using such a method of testing can not obtain more antennas be similar to it is same
The transmission power summation at moment, and often more than a result of this value, the erroneous judgement of result is caused, larger test be present and miss
Difference, the test device of power test is carried out without front end amplification module to input radio frequency signal using power sensor in the prior art
Or amplification module is placed in power sensor video output terminals, test signal level scope is limited to the input signal of power sensor
Level range, test signal level scope is small, and separate unit test device can not meet to high-power equipment and low-power equipment simultaneously
Test, in the prior art using power sensor to input radio frequency signal carry out power test test device without calibration compare
Table, Measurement bandwidth are limited to the video bandwidth of power sensor, are more than power sensor video tape during testing broad-band radiofrequency signal
Wide power is compressed, and test value is often below actual value, larger test error be present.In view of the problem of mentioned above, this
Utility model designs a kind of multi-channel power synchronous testing device, mentioned above to solve the problems, such as.
Utility model content
The purpose of this utility model is to provide a kind of multi-channel power synchronous testing device, to solve above-mentioned background technology
The problem of middle proposition.
To achieve the above object, the utility model provides following technical scheme：A kind of multi-channel power synchronous testing device,
Including Device under test, radio frequency testing device and PC, the Device under test includes antennal interface Ant1, antennal interface Ant2, day
Line interface Ant3 and antennal interface Ant4, the radio frequency testing device include AntPort1 interfaces, AntPort2 interfaces,
AntPort3 interfaces, AntPort4 interfaces, amplification module, power probe and data acquisition unit, the antennal interface Ant1, antenna
Interface Ant2, antennal interface Ant3 and antennal interface Ant4 respectively by four groups of radio-frequency cables and AntPort1 interfaces,
AntPort2 interfaces, AntPort3 interfaces connect with AntPort4 interfaces, and the amplification module includes amplification module 1, amplification mould
Block 2, amplification module 3 and amplification module 4, the power probe include power probe 1, power probe 2, power probe 3 and power
Probe 4, the amplification module 1, amplification module 2, amplification module 3 and amplification module 4 pass through power probe 1, power probe respectively
2nd, power probe 3 and power probe 4 are connected with the analog input end of data acquisition unit, and the data acquisition unit passes through USBOUT
Interface is connected with PC.
Preferably, the amplification module includes decay link, amplification link and straight-through link, and decay link and amplifier chain
Road is connected to attenuator and amplifier.
Preferably, the outside of the radio frequency testing device is provided with a-b box, and a-b box includes front panel and rear board,
Before antennal interface Ant1, antennal interface Ant2, antennal interface Ant3 and the antennal interface Ant4 of the Device under test are arranged at
The outer wall of panel, the USBOUT interfaces are arranged on the outer wall of rear board.
Compared with prior art, the beneficial effects of the utility model are：This kind of multi-channel power synchronous testing device, passes through
Multiple power probe and multi-channel data acquisition devices are realized multi-path antenna while tested, and meet EN regulations and are missed on inter-channel synchronization
The testing standard requirement of difference, different test links is selected according to the size of input signal, amplification module is placed in into power sensing
Device input, test signal level scope is drastically increased, meet such as bluetooth, ZigBee, 802.11a, 802.11b/
The test of the varying level size of the multi-signal type such as g, 802.11n, 802.11ac, calibration tape is improved according to the calibration table of comparisons
Width, incorporates test chain circuit device, and link is automatically selected by control logic so that test environment, which is built, becomes time saving and energy saving.
Brief description of the drawings
Fig. 1 is the general frame of the utility model radio frequency link measurement apparatus；
Fig. 2 is the radio frequency part schematic diagram of the utility model radio frequency link measurement apparatus；
Fig. 3 is the radio frequency principle figure of amplification module in the utility model radio frequency link measurement apparatus；
Fig. 4 is the radio frequency part schematic diagram of the utility model radio frequency link measurement apparatus calibration.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Fig. 1-4 are referred to, the utility model provides a kind of technical scheme：A kind of multi-channel power synchronous testing device, bag
Device under test, radio frequency testing device and PC are included, the Device under test includes antennal interface Ant1, antennal interface Ant2, antenna
Interface Ant3 and antennal interface Ant4, the radio frequency testing device include AntPort1 interfaces, AntPort2 interfaces, AntPort3
Interface, AntPort4 interfaces, amplification module, power probe and data acquisition unit, the antennal interface Ant1, antennal interface
Ant2, antennal interface Ant3 and antennal interface Ant4 are connect by four groups of radio-frequency cables and AntPort1 interfaces, AntPort2 respectively
Mouth, AntPort3 interfaces connect with AntPort4 interfaces, and the amplification module includes amplification module 1, amplification module 2, amplification mould
Block 3 and amplification module 4, the power probe includes power probe 1, power probe 2, power probe 3 and power probe 4, described
Amplification module 1, amplification module 2, amplification module 3 and amplification module 4 pass through power probe 1, power probe 2, power probe respectively
3 and power probe 4 be connected with the analog input end of data acquisition unit, the data acquisition unit passes through USBOUT interfaces and PC
Connection.
Wherein, the amplification module includes decay link, amplification link and straight-through link, and decay link and amplification link
Attenuator and amplifier are connected to, the outside of the radio frequency testing device is provided with a-b box, and a-b box is included above
Plate and rear board, antennal interface Ant1, antennal interface Ant2, antennal interface Ant3 and the antennal interface Ant4 of the Device under test
The outer wall of front panel is arranged at, the USBOUT interfaces are arranged on the outer wall of rear board.
Operation principle：Provide a kind of based on amplifier, attenuator, power probe, data acquisition unit, radio frequency testing dress
Put, link is selected using radio frequency testing device, determine to use according to the level grade of test signal and amplify or lead directly to or decline
Subtract link, when test signal level is larger, higher than power probe maximum input level when, using decay link, work as test signal
When level is in the range of the minimum and maximum incoming level of power probe, using straight-through link, when test signal level is less than work(
During the minimum incoming level of rate probe, using amplification link, four road signals of the maximum support of data acquisition unit sample simultaneously and processing,
When carrying out four antennas while launching the test of equipment, the radiofrequency signal of No. four antennas is accessed into four power probes respectively, then
The video output signals of four power probes are linked into four road analog input ends of data acquisition unit, carry out the same of No. four antennas
When sample, when the equipment for having more multi-path antenna (such as：Eight antennas) need test when, can be extended based on the present apparatus, two
It is individual even more than the synchronism detection for synchronously reaching more multi-path antenna between data acquisition unit by cable, radio frequency testing device can spirit
Work expands to n roads antenna synchronism detection, and power probe radio frequency bandwidth is limited, in order to test the radiofrequency signal of more high bandwidth, this reality
A calibration table of comparisons is additionally provided with new, before test using broadband AWGN signal imitation Device under test output signals pair
The video bandwidth of power probe is calibrated, and forms the one-to-one relationship of power probe input power-output video voltage,
Input power size can be pushed back according to output video voltage is counter by this corresponding relation during test, radio frequency link includes a plurality of penetrate
Frequency link, wherein one or more radio frequency link is selected by radio frequency testing device, power probe includes single or multiple work(
Rate is popped one's head in, and determines to use single or multiple power probes according to measurement antenna amount, data acquisition unit includes single or multiple numbers
According to collector, determine to use single or multiple data acquisition units according to measurement antenna amount, adopted when using two or more data
During storage, two or more data acquisition units are connected by synchronous cable, calibrate the table of comparisons, there is provided power probe input signal electricity
The one-to-one relationship of gentle output video voltage, a plurality of radio frequency link that radio frequency testing device single antenna is included are respectively：
The radiofrequency signal that Device under test is sent reaches the input of data acquisition unit by an attenuator, a power probe, tested
The radiofrequency signal that equipment is sent reaches the input of data acquisition unit by a power probe, the radio frequency letter that Device under test is sent
Number one amplifier of process, a power probe reach the input of data acquisition unit, when for multiple antennas when, entered based on single antenna
Row extension, Device under test interface, for connecting the antennal interface of Device under test, there is provided four road Device under test antennal interfaces, when by
When examination equipment has more multi-path antenna, this extension can be based on, the testing standard of radio frequency testing device includes：EN300328 regulations RF
Output power, DutyCycle, Tx-sequence, Tx-gap test；EN301893 regulation RF output power are surveyed
Examination, a-b box inside include radio frequency testing device, and the a-b box also includes：Front panel, it is provided with Device under test antennal interface, after
Panel, it is provided with USB interface, triggering input interface and gpib interface, 220V power interfaces.
Embodiment one
A kind of multi-channel power synchronous testing device, the device include：Multiple amplifiers, multiple attenuators, multiple power
Probe, a data acquisition unit, AntPort1 interfaces are used for connecting the antennal interface 1 of Device under test, and AntPort2 interfaces are used for
The antennal interface 2 of Device under test is connected, AntPort3 interfaces are used for connecting the antennal interface 3 of Device under test, AntPort4 interfaces
For connecting the antennal interface 4 of Device under test, USBOUT interfaces are used for connecting data processing terminal PC, are carrying out RF
Output power test when, first according to the level hierarchical selection of input signal using decay link or straight-through link or
Person amplifies link, then by a power probe, and the video voltage of power probe is output to Multichannel data acquisition device
Analog input end, then sample video magnitude of voltage is read by the USB delivery outlets of Multichannel data acquisition device, according to based on this practicality
New confirmatory experiment, the utility model under 20dB standard requirement, can at least measure meeting test result dynamic range
Signal level less than -15dBm, and up to 24dBm signal level can be measured, the signal level range of measurement at least may be used
Up to 39dB, the video bandwidth of power probe is 30MHz, can be rapidly according to measurement gained magnitude of voltage by calibrating the table of comparisons
Power probe incoming level is calculated, then subtracts power probe front end to the path loss of Device under test antenna output end, you can
To the output level size of Device under test, the calibration table of comparisons provides tone signal and the AWGN signals of various bandwidth are arbitrarily designated work(
The input power and video voltage corresponding relation of rate step change, its input electricity is read from power sensor USB output port
Level values, then adopted by number and draw its output end video voltage size, carrying out DutyCycle, Tx-sequence, Tx-gap test
When, by analyzing the data got from Multichannel data acquisition device, so as to obtain the dutycycle of each passage and overall channel
DutyCycle, emission maximum sequence Tx-sequence, minimum transmitting gap Tx-gap.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out with a variety of changes in the case where not departing from principle of the present utility model and spirit, repaiied
Change, replace and modification, the scope of the utility model are defined by the appended claims and the equivalents thereof.
Claims (3)
1. a kind of multi-channel power synchronous testing device, including Device under test, radio frequency testing device and PC, it is characterised in that：
The Device under test includes antennal interface Ant1, antennal interface Ant2, antennal interface Ant3 and antennal interface Ant4, the radio frequency
Test device includes AntPort1 interfaces, AntPort2 interfaces, AntPort3 interfaces, AntPort4 interfaces, amplification module, power
Probe and data acquisition unit, the antennal interface Ant1, antennal interface Ant2, antennal interface Ant3 and antennal interface Ant4 difference
It is connected by four groups of radio-frequency cables with AntPort1 interfaces, AntPort2 interfaces, AntPort3 interfaces and AntPort4 interfaces, institute
Stating amplification module includes amplification module 1, amplification module 2, amplification module 3 and amplification module 4, and the power probe is visited including power
First 1, power probe 2, power probe 3 and power probe 4, the amplification module 1, amplification module 2, amplification module 3 and amplification mould
Block 4 passes through power probe 1, power probe 2, power probe 3 and power probe 4 and the analog input end of data acquisition unit respectively
Connection, the data acquisition unit are connected by USBOUT interfaces with PC.
A kind of 2. multi-channel power synchronous testing device according to claim 1, it is characterised in that：The amplification module bag
Decay link, amplification link and straight-through link are included, and decay link and amplification link are connected to attenuator and amplifier.
A kind of 3. multi-channel power synchronous testing device according to claim 1, it is characterised in that：The radio frequency testing dress
The outside put is provided with a-b box, and a-b box includes front panel and rear board, the antennal interface Ant1 of the Device under test, day
Line interface Ant2, antennal interface Ant3 and antennal interface Ant4 are arranged at the outer wall of front panel, and the USBOUT interfaces are set
In the outer wall of plate below.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720780016.8U CN206850780U (en) | 2017-06-30 | 2017-06-30 | A kind of multi-channel power synchronous testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720780016.8U CN206850780U (en) | 2017-06-30 | 2017-06-30 | A kind of multi-channel power synchronous testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206850780U true CN206850780U (en) | 2018-01-05 |
Family
ID=60803284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720780016.8U Active CN206850780U (en) | 2017-06-30 | 2017-06-30 | A kind of multi-channel power synchronous testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206850780U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115083035A (en) * | 2021-03-15 | 2022-09-20 | 北汽福田汽车股份有限公司 | Data acquisition method and device, medium, equipment and vehicle |
-
2017
- 2017-06-30 CN CN201720780016.8U patent/CN206850780U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115083035A (en) * | 2021-03-15 | 2022-09-20 | 北汽福田汽车股份有限公司 | Data acquisition method and device, medium, equipment and vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109889239B (en) | Double-darkroom structure for MIMO OTA test and test method | |
| CN100582801C (en) | Batch detector methods and apparatus of power amplifier | |
| CN106771668A (en) | A kind of electromagnetic radiation parameter test system | |
| CN107147541A (en) | A kind of WIFI Performance Test Systems and method | |
| CN104967494B (en) | A kind of test method, equipment and system | |
| CN107819483B (en) | Signal transmitting apparatus and its test equipment, repeater communication equipment | |
| CN104777443B (en) | The performance testing device and method of testing of a kind of partial-discharge ultrahigh-frequency sensor | |
| CN101459477A (en) | Automatic test method for mobile phone antenna radiation performance | |
| CN109873680B (en) | Test system and test method of large-scale array antenna | |
| CN106656306A (en) | High-efficiency and high-precision testing method for third-order intermodulation of repeater based on vector network | |
| CA2298338C (en) | A cable testing apparatus | |
| CN206850780U (en) | A kind of multi-channel power synchronous testing device | |
| CN103441785B (en) | System and method for multi-antenna channel environment simulation based on full-silencing dark room | |
| CN202794512U (en) | Sensitivity testing device of secondary radar digital receiver | |
| CN105187135B (en) | Test the method and system of wireless device | |
| CN208939969U (en) | A kind of test macro for RF receiving and transmission module | |
| CN104618930B (en) | A kind of multiple antennas test system calibration method and equipment | |
| CN109298249A (en) | A kind of microwave claps wave radiation field measurement device and method | |
| CN110912607B (en) | Multi-channel radio frequency optical transmission signal amplitude and phase measuring device and measuring and verifying method | |
| CN111162848A (en) | Multichannel radio frequency test system | |
| CN208820793U (en) | Base station testing system | |
| CN103929253B (en) | RF switching device for Type Approval DFS test | |
| CN207541175U (en) | A kind of testing jig and shield effectiveness test system | |
| CN213903613U (en) | Integrated field uniformity calibration signal generation device | |
| CN104777381B (en) | A kind of Electromagnetic Interference Test method and system of double antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100190 703, room 6, block C, Cai Zhi International Building, 18 Zhongguancun East Road, Haidian District, Beijing. Patentee after: Beijing de Chen Polytron Technologies Inc Address before: 100190 703, room 6, block C, Cai Zhi International Building, 18 Zhongguancun East Road, Haidian District, Beijing. Patentee before: Beijing Century Communication Technology Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |