CN1731714B - Method for testing RF module upstream channel gain and isolation degree - Google Patents
Method for testing RF module upstream channel gain and isolation degree Download PDFInfo
- Publication number
- CN1731714B CN1731714B CN2005100985536A CN200510098553A CN1731714B CN 1731714 B CN1731714 B CN 1731714B CN 2005100985536 A CN2005100985536 A CN 2005100985536A CN 200510098553 A CN200510098553 A CN 200510098553A CN 1731714 B CN1731714 B CN 1731714B
- Authority
- CN
- China
- Prior art keywords
- ref
- frequency module
- data feedback
- radio
- feedback channel
- 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.)
- Expired - Fee Related
Links
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The invention discloses a system and method for testing RF module up-channel gain and isolation. The inventive system comprises signal source with TD-SCDMA and testing devices. The testing devices comprise data conversion module, indicating module for received signal intensity and output module for test results. After confirming the basic RF module's up-channel basic gain G_ref with basic input power P_ref and corresponding basic receive signal intensity indication RSSI_ref, the signal source with TD-SCDMA transmits basic input power P_ref signal to up-channel of the RF module; according to output signal, the test devices will calculate current receive signal intensity and up-channel gain G_ref+ (RSSI_now-RSSI_ref) of the device module.
Description
Technical field
The present invention relates to a kind of test macro and method of radio-frequency module; In particular; Relate to gain and the system and method for isolation of the RF module upstream channel of a kind of test TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, Time Division-Synchronous Code Division Multiple Access).
Background technology
At present, in production test or other test environment, the gain of RF module upstream channel and isolation all directly measure with frequency spectrograph.Shown in Figure of description 1, its test process is following:
At first, in the data feedback channel input port connection signal source of radio-frequency module, at the data feedback channel output port connection frequency spectrograph of radio-frequency module;
Then, the signal of signal source emission specified power is to the data feedback channel of radio-frequency module;
Afterwards, reading and be connected the performance number that shows on the radio-frequency module frequency spectrograph, is exactly the power of RF module upstream channel signal output;
At last, calculate power output and input power poor of the data feedback channel of radio-frequency module, just can obtain RF module upstream channel gain.
The data feedback channel isolation of radio-frequency module is exactly power output poor of power output and the data feedback channel that does not have the signal input of radio-frequency module data feedback channel that signal input is arranged.
Whole process need signal source and two instrument co-ordinations of frequency spectrograph of test; And in production test procedure; For production efficiency is provided, the gain of data feedback channel and isolation all are under independent environment, to measure, in this case; Just need more frequency spectrograph, increased production cost.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of method that realizes the gain of testing RF module upstream channel with simple system; This system can also be at the isolation that tests out testing RF module upstream channel on the basis of gain; The above-mentioned two kinds of parameters of test can be carried out under same environment among the present invention; Saved frequency spectrograph, reduced production costs greatly.
System according to the invention comprises like lower device:
The signal source of band TD-SCDMA option is used for to the data feedback channel input port of tested radio-frequency module input power being provided;
Receive signal strength signal intensity indication testing equipment, be used for going out the signal strength signal intensity indication according to tested radio-frequency module output calculated signals, this equipment comprises:
The IQ data conversion module is used for the output conversion of signals of tested radio-frequency module is become the IQ two paths of data;
Receive signal strength signal intensity indication computing module, be used for calculating the indication of reception signal strength signal intensity according to said IQ two paths of data;
Test result output module is used for the reception signal strength signal intensity indication result output that calculates said.
The present invention and then a kind of method of testing RF module upstream channel gain is provided comprises the steps:
Confirm that data feedback channel reference gain G_ref and the corresponding benchmark of benchmark radio-frequency module under benchmark input power P_ref receives signal strength signal intensity indication RSSI_ref;
Signal source by said band TD-SCDMA option is the signal of benchmark input power P_ref to the appointment data feedback channel transmitted power of tested radio-frequency module;
Go out current reception signal strength signal intensity indication RSSI_now by said testing equipment according to the output calculated signals of tested radio-frequency module;
The upstream channel gain that calculates tested radio-frequency module is G_ref+ (RSSI_now-RSSI_ref).
The present invention and then a kind of method of testing RF module upstream channel isolation is provided comprises the steps:
Signal source by said band TD-SCDMA option is sent signal to the appointment data feedback channel j of tested radio-frequency module;
Go out to specify the current reception signal strength signal intensity indication RSSI_now_j of data feedback channel j by said testing equipment according to the output calculated signals of each data feedback channel of tested radio-frequency module, with the reception signal strength signal intensity indication RSSI_ref_ (m) of each other data feedback channel;
Calculating the data feedback channel j of tested radio-frequency module and the isolation of each other data feedback channel is RSSI_now_j-RSSI_ref_ (m).
The mode that the present invention adopts simple system to replace original use frequency spectrograph to test has reduced the use of test instrumentation, has improved production efficiency, has saved production cost.
Description of drawings
Fig. 1 is an employed test macro in the prior art;
Fig. 2 is the embodiment sketch map of the test macro described in the present invention.
Embodiment
Combine accompanying drawing that structure of the present invention and operation principle are further specified at present:
Shown in Figure of description 2, system implementation example according to the invention can comprise the signal source 1 and reception signal strength signal intensity indication testing equipment 4 of band TD-SCDMA option.
The signal source 1 of said band TD-SCDMA option is used for to the data feedback channel input port of tested radio-frequency module 2 input power being provided;
Said reception signal strength signal intensity indication testing equipment 4 is used for going out the signal strength signal intensity indication according to the output calculated signals of tested radio-frequency module 2 output ports, and this equipment comprises:
The IQ data conversion module is used for the output conversion of signals of tested radio-frequency module 2 is become the IQ two paths of data;
Receive signal strength signal intensity indication computing module, be used for calculating the indication of reception signal strength signal intensity according to said IQ two paths of data;
Test result output module is used for the reception signal strength signal intensity indication result output that calculates said.
Reception signal strength signal intensity indication testing equipment 4 recited above can use existing intermediate frequency equipment to replace in actual production, just receives signal strength signal intensity indication and test result output function in order to realize calculating, and needs to be equipped with corresponding software module.
Test result output module described in the present invention can be integrated in the testing equipment 4 and output test result; Also can be independent of testing equipment 4 outer settings separately; Utilize external other equipment to output test result; For example can use a computer 5 shows and outputs test result, and only needs in the use with data cable 103 computer 5 is linked to each other with testing equipment 4.
Tested radio-frequency module 2 described in the present invention is in its working range; Data feedback channel output power signal and input power are linear; Therefore, can draw, the IQ two paths of data of the upward signal output of the tested radio-frequency module 2 of reflection of testing equipment 4 conversions is also linear with input power; That is to say, receive the linear change that the signal strength signal intensity indication can identify output signal power.
The embodiment of the method for the upstream channel gain of the tested radio-frequency module 2 of test of the present invention is following:
Step 1 is obtained reference data G_ref, P_ref;
The detailed process of this step is following:
When obtaining above-mentioned reference data, need two instrument, the signal source 1 and frequency spectrograph 3 of band TD-SCDMA option connect shown in the by specification accompanying drawing 1;
Signal source 1 by said band TD-SCDMA option is sent the data feedback channel input port of the upward signal of specified power P_ref to radio-frequency module 2;
Read the output signal power of the data feedback channel of radio-frequency module 2 from the frequency spectrograph 3 of the data feedback channel output port that is connected radio-frequency module 2;
Calculate output signal power and input signal poor of the data feedback channel of radio-frequency module 2, draw the upstream channel gain G_ref of this radio-frequency module 2.
Step 2: obtain reference data RSSI_ref;
The detailed process of this step is following:
By specification accompanying drawing 2 is built environment again;
Signal source 1 by said band TD-SCDMA option is sent the data feedback channel input port of the upward signal of specified power P_ref to radio-frequency module 2;
The testing equipment 4 that is connected to the data feedback channel output port of radio-frequency module 2 becomes the IQ two paths of signals to the last line output conversion of signals of radio-frequency module 2; Calculate and receive signal indication intensity RSSI_re; Send to computer 5, can obtain the reception signal strength signal intensity indication RSSI_ref of the upward signal of this radio-frequency module 2 from computer 5.
So just obtain to test given data P_ref, G_ref and the RSSI_ref of necessity of other tested radio-frequency modules 2, can get into step 3, tested the upstream channel gain of other tested radio-frequency modules 2.
Step 3: the upstream channel gain of testing tested radio-frequency module 2;
Keep the environment of Figure of description 2; Change tested radio-frequency module 2 into; Keep the signal source 1 of band TD-SCDMA option and send the data feedback channel input port of the upward signal of specified power P_ref, obtain the reception signal strength signal intensity indication RSSI_now of the upward signal of this radio-frequency module from computer 5 to tested radio-frequency module 2;
The upstream channel gain of tested radio-frequency module 2 is G_ref+ (RSSI_now-RSSI_ref).
When the current reception signal strength signal intensity indication of calculating RSSI_now,, be the mean value of getting in a period of time for fear of the interference of transient change.
The embodiment of the method for the data feedback channel isolation of testing RF module 2 according to the invention is following:
Because the data feedback channel isolation of radio-frequency module 2 is that the data feedback channel of input signal and the difference of the reception signal strength signal intensity indication of the data feedback channel that does not have input signal are arranged, and does not therefore need to test in advance some given datas.
The concrete steps of this process are following:
By specification accompanying drawing 2 is built test environment, and the appointment data feedback channel j to tested radio-frequency module 2 signals by the signal source that has the TD-SCDMA option 1;
Testing equipment 4 converts the upward signal of all data feedback channels of tested radio-frequency module 2 to the IQ two paths of signals, calculates the reception signal strength signal intensity indication RSSI_now (x) of the upward signal of each data feedback channel;
The data feedback channel j of tested radio-frequency module 2 and the isolation of other data feedback channels are RSSI_now_j-RSSI_ref_ (m), and RSSI_ref_ (m) is the reception signal strength signal intensity indication of other data feedback channels.
When calculating reception signal strength signal intensity indication RSSI_now (x),, need get the mean value in a period of time for fear of the interference of transient change.
Claims (6)
1. the method for testing RF module upstream channel gain and isolation is characterized in that this method comprises the steps:
Confirm that data feedback channel reference gain G_ref and the corresponding benchmark of benchmark radio-frequency module under benchmark input power P_ref receives signal strength signal intensity indication RSSI_ref;
Signal source by band TD-SCDMA option is the signal of benchmark input power P_ref to the appointment data feedback channel transmitted power of tested radio-frequency module;
Receiving signal strength signal intensity indicates testing equipment to go out current reception signal strength signal intensity indication RSSI_now according to the output calculated signals of tested radio-frequency module;
The upstream channel gain that calculates tested radio-frequency module is G_ref+ (RSSI_now-RSSI_ref).
2. the method for testing RF module upstream channel gain and isolation according to claim 1 is characterized in that, the current reception signal strength signal intensity indication of said calculating RSSI_now step is the mean value of getting in a period of time.
3. the method for testing RF module upstream channel gain as claimed in claim 1 and isolation is characterized in that, the data feedback channel reference gain G_ref step of said definite benchmark radio-frequency module under benchmark input power P_ref comprises the steps:
Signal source by said band TD-SCDMA option is sent the data feedback channel input port of the signal of reference power P_ref to the benchmark radio-frequency module;
Read the output signal power of the data feedback channel of benchmark radio-frequency module from the frequency spectrograph of the data feedback channel output port that is connected the benchmark radio-frequency module;
Calculate output signal power and input signal power poor of the data feedback channel of benchmark radio-frequency module, draw the data feedback channel reference gain G_ref of this benchmark radio-frequency module.
4. the method for testing RF module upstream channel gain and isolation according to claim 1 is characterized in that, the benchmark of said definite benchmark radio-frequency module under benchmark input power P_ref receives signal strength signal intensity indication RSSI_ref step, comprises the steps:
Signal source by said band TD-SCDMA option is sent the data feedback channel input port of the signal of reference power P_ref to the benchmark radio-frequency module;
Indicate testing equipment to go out benchmark reception signal strength signal intensity indication RSSI_ref by said reception signal strength signal intensity according to the output calculated signals of the data feedback channel output port of benchmark radio-frequency module.
5. like the method for each said testing RF module upstream channel gain and isolation among the claim 1-4, it is characterized in that this method is further comprising the steps of:
The signal source of said band TD-SCDMA option is also sent signal to the appointment data feedback channel j of tested radio-frequency module;
Said reception signal strength signal intensity indication testing equipment goes out to specify the current reception signal strength signal intensity of data feedback channel j to indicate RSSI_now_j according to the output calculated signals of each data feedback channel of tested radio-frequency module, with the reception signal strength signal intensity indication RSSI_ref_ (m) of each other data feedback channel;
Calculating the data feedback channel j of tested radio-frequency module and the isolation of each other data feedback channel is RSSI_now_j-RSSI_ref_ (m).
6. like the method for said testing RF module upstream channel gain of claim 5 and isolation, it is characterized in that said calculating RSSI_now_j and RSSI_ref_ (m) step are the mean value of getting in a period of time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100985536A CN1731714B (en) | 2005-09-02 | 2005-09-02 | Method for testing RF module upstream channel gain and isolation degree |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100985536A CN1731714B (en) | 2005-09-02 | 2005-09-02 | Method for testing RF module upstream channel gain and isolation degree |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1731714A CN1731714A (en) | 2006-02-08 |
| CN1731714B true CN1731714B (en) | 2012-05-09 |
Family
ID=35964024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005100985536A Expired - Fee Related CN1731714B (en) | 2005-09-02 | 2005-09-02 | Method for testing RF module upstream channel gain and isolation degree |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1731714B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101119165B (en) * | 2006-08-03 | 2011-03-16 | 大唐移动通信设备有限公司 | Method and apparatus for testing downlink forming gain of time-division synchronous code division multiple access TD-SCDMA intelligent antenna |
| CN101282143B (en) * | 2007-04-05 | 2012-09-05 | 大唐移动通信设备有限公司 | Apparatus and method for measuring radio frequency emitter power |
| CN101335963B (en) * | 2007-06-26 | 2011-08-10 | 中兴通讯股份有限公司 | Receiving level strength indication computing method and apparatus |
| CN101685125B (en) * | 2008-09-22 | 2013-10-09 | 北京航空航天大学 | Method of testing isolation between wire cables by adopting harmonic waves |
| US10666542B1 (en) * | 2019-01-15 | 2020-05-26 | Litepoint Corporation | System and method for testing a data packet signal transceiver |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1341302A (en) * | 1999-12-22 | 2002-03-20 | 皇家菲利浦电子有限公司 | High dynamic range low ripple RSSI for zero-IF or low-IF receivers |
-
2005
- 2005-09-02 CN CN2005100985536A patent/CN1731714B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1341302A (en) * | 1999-12-22 | 2002-03-20 | 皇家菲利浦电子有限公司 | High dynamic range low ripple RSSI for zero-IF or low-IF receivers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1731714A (en) | 2006-02-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107733539B (en) | Testing method and system for satellite-borne multi-path microwave receiver/frequency converter | |
| CN100582801C (en) | Batch detector methods and apparatus of power amplifier | |
| CN202002984U (en) | Multi-frequency-band passive intermodulation test instrument | |
| CN106027170B (en) | The digital miniaturization radio equipment automatic testing equipment of one kind and system | |
| CN111323656B (en) | High-efficiency amplitude-phase test system and test method for multi-channel passive antenna array | |
| CN1731714B (en) | Method for testing RF module upstream channel gain and isolation degree | |
| CN109270366B (en) | Short-period batch satellite testing method | |
| CN104754093A (en) | Test device, system and method | |
| CN105610522A (en) | Detection system and method for universal Beidou radio frequency module | |
| CN113890637B (en) | Millimeter wave active antenna OTA test system and method and calibration method | |
| CN100473996C (en) | Apparatus for detecting linear index of power amplifier | |
| CN201233288Y (en) | Multipath data acquisition system | |
| CN101174907A (en) | Testing device for radio frequency veneer | |
| CN105281852B (en) | A kind of L-band test equipment and test method | |
| CN101674141B (en) | Method and device for detecting radio frequency feed line loss | |
| CN202008510U (en) | Comprehensive tester for passive isolator | |
| CN105301444A (en) | Single-port detection-based cable fault locating device | |
| CN109030960B (en) | S parameter testing method for 5G antenna filter integrated unit | |
| CN108075839A (en) | A kind of apparatus and method for supporting a variety of communication standard signal power detections | |
| CN104993891A (en) | Multi-carrier signal time delay online calibration system | |
| JP2015095265A (en) | Method for testing wireless output of smart device and wireless transmission network analysis tool | |
| CN105425060B (en) | A kind of interference detection method and detecting system of antenna coupling | |
| CN205430258U (en) | Radio frequency transmiting receiving component's radio frequency index measuring device | |
| CN107707315B (en) | Wireless product edge signal measurement method based on IQxel | |
| CN111224723B (en) | Calibration method and system of radio frequency front-end module, electronic equipment and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120509 Termination date: 20150902 |
|
| EXPY | Termination of patent right or utility model |