CN101598751A - A kind of measuring method and the measurement mechanism thereof of high-power radio-frequency module motional impedance - Google Patents
A kind of measuring method and the measurement mechanism thereof of high-power radio-frequency module motional impedance Download PDFInfo
- Publication number
- CN101598751A CN101598751A CNA2008100676305A CN200810067630A CN101598751A CN 101598751 A CN101598751 A CN 101598751A CN A2008100676305 A CNA2008100676305 A CN A2008100676305A CN 200810067630 A CN200810067630 A CN 200810067630A CN 101598751 A CN101598751 A CN 101598751A
- Authority
- CN
- China
- Prior art keywords
- network analyzer
- test
- frequency
- bandpass filter
- devices
- 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.)
- Granted
Links
Images
Landscapes
- Testing Electric Properties And Detecting Electric Faults (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
A kind of measuring method of high-power radio-frequency module motional impedance comprises the steps: attenuating device, bandpass filter and network analyzer are connected successively; Network analyzer is arranged to the mode of operation of minimum IFBW and peak power output; Network analyzer is calibrated; Devices to test is connected with attenuator, and Devices to test is operated near the desire test frequency frequency; Network analyzer is set in the test frequency, measures the dynamic resistance state of Devices to test when the test frequency, and read the result.Its measurement mechanism comprises attenuating device, bandpass filter and network analyzer, and described attenuator, bandpass filter and network analyzer are connected successively.The present invention has the advantage of the motional impedance that can measure the radio-frequency power output device.
Description
Technical field
The present invention relates to a kind of motional impedance measuring method of high-power radio-frequency module, promptly under the situation of radio-frequency module operate as normal, carry out the measuring method and the measurement mechanism thereof of motional impedance by indirect mode.
Background technology
The method of present existing measurement motional impedance is called impedance scan (Z-SCAN), it is by measuring the voltage and current vector of input Devices to test, calculate the motional impedance of Devices to test then, this method can only be measured the motional impedance of the equipment that does not have power output, then can't measure such as equipment such as power amplifier, radio-frequency power supplies for the equipment that power output is arranged.
Summary of the invention
The objective of the invention is to overcome the problems referred to above, provide a kind of method that can measure the motional impedance of radio-frequency power output device to society.
Another object of the present invention is: also provide the measurement mechanism that can realize said method to society.
Ultimate principle of the present invention is: if measure the motional impedance of Devices to test at the C frequency, Devices to test is operated near the C frequency frequency, measures its motional impedance at the C frequency by network analyzer.
The working frequency range of supposing Devices to test from A Hz to B Hz, if measure Devices to test at the frequency C Hz (motional impedance of A≤C≤B) locate, can choose near the frequency XHz frequency C Hz (A≤X≤B), make Devices to test be operated in frequency X Hz, the test frequency of network analyzer is set in C Hz, measure Devices to test at the motional impedance at frequency C Hz place and read the result.The calibration of network analyzer will disconnect the cable at Devices to test port A place earlier and calibrate in the port of cable, and network analyzer will be arranged to the test pattern of minimum IFBW (intermediate-frequency bandwidth) and peak power output.
The peak power output of supposing network analyzer is P
0DBm, bandpass filter decays to Ap dB frequency C Hz place, frequency X Hz place decay to As dB, attenuator all is A dB in the decay of whole working frequency range, Devices to test output power by port A in the process of test is P
ADBm.
At first the power that sends of network analyzer is P
0The power that the signal of dBm arrives the Devices to test port after by the decay of bandpass filter and attenuator is P
0-Ap-A dBm; For the frequency at Devices to test port A is that C Hz and frequency are the signal of X Hz, decaying respectively by attenuator and bandpass filter, A+Ap and A+As dB are laggard to go into the network analyser, so at the input port of network analyzer, frequency is that the signal intensity ratio frequency of C Hz is the big P of signal of X Hz
0-P
A+ As-2Ap-A dB.Choose the working frequency points X Hz of suitable bandpass filter, attenuator and Devices to test, can make P
0-P
AThe value of+As-2Ap-A is greater than certain value (being generally 10 to 20dB), make at the network analyzer input end, undesired signal is very little with respect to normal signal, adds the IF wave filter of network analyzer inside, well filtering interference signals draws correct measurement result.
Specifically, measuring process of the present invention is:
(1), attenuating device, bandpass filter and network analyzer are connected successively;
(2), network analyzer is arranged to the mode of operation of minimum IFBW and peak power output;
(3), network analyzer is calibrated;
(4), Devices to test is connected with attenuator, and with Devices to test be operated near the desire test frequency frequency;
(5), network analyzer is set in the test frequency, measure the dynamic resistance state of Devices to test when the test frequency, and read the result.
Measurement mechanism one of the present invention is: comprise attenuator, bandpass filter and network analyzer, described attenuator, bandpass filter and network analyzer are connected successively.
Measurement mechanism two of the present invention is: comprise directional coupler, resistance, load, bandpass filter and network analyzer, described directional coupler is connected with bandpass filter and network analyzer successively by its port C; The port D connecting resistance of described directional coupler, the port E of directional coupler connects load.
The present invention has the advantage of the motional impedance that can measure the radio-frequency power output device.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of measurement mechanism one of the present invention.
Fig. 2 is the synoptic diagram that utilizes device to test result shown in Figure 1.
Fig. 3 is the structural representation of a kind of embodiment of measurement mechanism two of the present invention.
Embodiment
For making the auditor more be expressly understood principle of the present invention and structure composition, cooperate graphic being described as follows now:
See also Fig. 1, Fig. 1 is the structural representation of a kind of embodiment of measurement mechanism one of the present invention.This device comprises attenuator, bandpass filter and network analyzer, and described attenuator, bandpass filter and network analyzer are connected successively.
One Devices to test (radio-frequency power supply) frequency of operation is arranged at 54MHz to 66MHz, now will measure the motional impedance when 60.3MHz place output power is 40dBm.Make Devices to test be operated in 54MHz, choose the attenuator that decays to 20dB, bandpass filter is at the 30dB that decays at 54MHz place, decay at the 60.3MHz place is approximately 0dB, take two wave filter series connection in order to reach better filter effect, the series connection postfilter is at the 60dB that decays at 54MHz place, the 0dB that decays at the 60.3MHz place.Network analyzer is arranged on peak power output 10dBm and minimum IFBW (intermediate-frequency bandwidth) mode of operation, like this at the little 10dB of input port jam-to-signal normal signal of network analyzer, can obtain good test result, test result is by shown in the Smith chart 2.Its measured value 1 is 59.386 Ω-j43.865 Ω.
Above-mentioned measurement mechanism can adopt following method to test:
(1), attenuator, bandpass filter and network analyzer are connected successively;
(2), network analyzer is arranged to the mode of operation of minimum IFBW and peak power output;
(3), network analyzer is calibrated;
(4), Devices to test is connected with attenuator, and with Devices to test be operated near the desire test frequency frequency;
(5), network analyzer is set in the test frequency, measure the dynamic resistance state of Devices to test when the test frequency, and read the result.
See also Fig. 3, Fig. 3 is the structural representation of a kind of embodiment of measurement mechanism two of the present invention.This device comprises directional coupler, resistance, load, bandpass filter and network analyzer, and described directional coupler is connected with bandpass filter and network analyzer successively by its port C; The port D connecting resistance of described directional coupler, the port E of directional coupler connects load.Suppose that directional coupler port B is A dB to the coupling coefficient of port C, then can apply mechanically top expression formula and measure.If selecting coupling coefficient is the directional coupler of 20dB and 50 ohm load, use same bandpass filter in the above-mentioned example, then can obtain consistent test result.
Above-mentioned measurement mechanism can adopt following method to test:
(1), directional coupler is connected with bandpass filter and network analyzer successively by its port C; The port D connecting resistance of described directional coupler, the port E of directional coupler connects load;
(2), network analyzer is arranged to the mode of operation of minimum IFBW and peak power output;
(3), network analyzer is calibrated;
(4), Devices to test is connected with attenuator, and with Devices to test be operated near the desire test frequency frequency;
(5), network analyzer is set in the test frequency, measure the dynamic resistance state of Devices to test when the test frequency, and read the result.
Claims (4)
1, a kind of measuring method of high-power radio-frequency module motional impedance is characterized in that, comprises the steps:
(1), attenuating device, bandpass filter and network analyzer are connected successively;
(2), network analyzer is arranged to the mode of operation of minimum IFBW and peak power output;
(3), network analyzer is calibrated;
(4), Devices to test is connected with attenuator, and with Devices to test be operated near the desire test frequency frequency;
(5), network analyzer is set in the test frequency, measure the dynamic resistance state of Devices to test when the test frequency, and read the result.
2, measuring method according to claim 1 is characterized in that: described attenuating device comprises attenuator or directional coupler.
3, a kind of measurement mechanism of realizing the described method of claim 1 is characterized in that:
Comprise attenuator, bandpass filter and network analyzer, described attenuator, bandpass filter and network analyzer are connected successively.
4, a kind of measurement mechanism of realizing the described method of claim 1 is characterized in that:
Comprise directional coupler, resistance, load, bandpass filter and network analyzer, described directional coupler is connected with bandpass filter and network analyzer successively by its port C; The port D connecting resistance of described directional coupler, the port E of directional coupler connects load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810067630A CN101598751B (en) | 2008-06-03 | 2008-06-03 | Measuring method and measuring device of dynamic impedance of high-power radio-frequency module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810067630A CN101598751B (en) | 2008-06-03 | 2008-06-03 | Measuring method and measuring device of dynamic impedance of high-power radio-frequency module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101598751A true CN101598751A (en) | 2009-12-09 |
| CN101598751B CN101598751B (en) | 2012-09-05 |
Family
ID=41420254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810067630A Expired - Fee Related CN101598751B (en) | 2008-06-03 | 2008-06-03 | Measuring method and measuring device of dynamic impedance of high-power radio-frequency module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101598751B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102497236A (en) * | 2011-11-16 | 2012-06-13 | 中国电子科技集团公司第四十一研究所 | Method for utilizing network analyzer to localize and track dynamic signal and method thereof |
| CN103091556A (en) * | 2011-10-31 | 2013-05-08 | 国民技术股份有限公司 | Measuring method and system of electronic tag matching impedance |
| CN103780314A (en) * | 2012-10-18 | 2014-05-07 | 富葵精密组件(深圳)有限公司 | Radio frequency characteristic test device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3110827B2 (en) * | 1991-10-31 | 2000-11-20 | アジレント・テクノロジー株式会社 | Impedance meter |
| JP2007163304A (en) * | 2005-12-14 | 2007-06-28 | Hitachi Kokusai Electric Inc | Internal impedance measuring method of active circuit |
| CN101093235A (en) * | 2007-07-20 | 2007-12-26 | 南京师范大学 | System for measuring internal impedance of noise source of switching power supply EMI based on Hilbert transform and current probe, and measuration method |
-
2008
- 2008-06-03 CN CN200810067630A patent/CN101598751B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103091556A (en) * | 2011-10-31 | 2013-05-08 | 国民技术股份有限公司 | Measuring method and system of electronic tag matching impedance |
| CN103091556B (en) * | 2011-10-31 | 2016-03-30 | 国民技术股份有限公司 | A kind of measuring method of electronic tag matched impedance and system |
| CN102497236A (en) * | 2011-11-16 | 2012-06-13 | 中国电子科技集团公司第四十一研究所 | Method for utilizing network analyzer to localize and track dynamic signal and method thereof |
| CN102497236B (en) * | 2011-11-16 | 2014-10-22 | 中国电子科技集团公司第四十一研究所 | Method for utilizing network analyzer to localize and track dynamic signal and method thereof |
| CN103780314A (en) * | 2012-10-18 | 2014-05-07 | 富葵精密组件(深圳)有限公司 | Radio frequency characteristic test device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101598751B (en) | 2012-09-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8314604B2 (en) | Apparatus and method for spurious-free signal range measurement for RF circuitry | |
| CN106569074B (en) | Conducted susceptibility method of testing based on coupling device | |
| CN105067989B (en) | A kind of general power amplifier Auto-Test System and its automatic test approach | |
| CN107576879B (en) | Frequency sweep measuring device and method for estimating cable attribute | |
| CN108614152B (en) | Load traction system and method for measuring input end face power of tested piece of load traction system | |
| JP2002217847A (en) | Apparatus and method for dynamic range | |
| CN111707874B (en) | 5G power amplifier testing device and method thereof | |
| CN204103932U (en) | Phase amplitude-matched multi-channel radio frequency simulator | |
| CN102780535A (en) | Intermediate-frequency detection based vector network analyzer power control method | |
| CN106886002B (en) | Calibration method of spectrum analyzer | |
| US20090174415A1 (en) | Method for Calibrating a Real-Time Load-Pull System | |
| CN102565672A (en) | Radio-frequency power amplifier harmonic wave testing circuit based on PXI (PCI (Peripheral Component Interconnect) Extension For Instrumentation) testing device | |
| CN101598751B (en) | Measuring method and measuring device of dynamic impedance of high-power radio-frequency module | |
| CN110988490A (en) | Power filter differential loss time domain measurement system and method | |
| CN105137243B (en) | A kind of method for determining LNA degeneration power threshold and damage power threshold | |
| CN112636713A (en) | Circuit structure suitable for realizing radio frequency gain automatic switching control at receiving end of vector network analyzer | |
| CN116047121A (en) | Multifunctional microwave comprehensive tester | |
| CN103487667B (en) | A kind of burst pulse envelope parameters measuring system based on logarithmic detector | |
| US11714115B2 (en) | Instrument interfacing method and device thereof | |
| CN114878950A (en) | System and method for pulse emission test | |
| CN105445549B (en) | A kind of weak electromagnetic signal frequency spectrum measuring method | |
| CN112530825B (en) | On-chip multi-parameter measuring device | |
| Fuse et al. | High-dynamic-range measurement of millimeter-wave amplifier using 140-GHz fundamental mixer | |
| CN208999560U (en) | A kind of DFS test macro | |
| CN106896263A (en) | A kind of broadband radio-frequency power measuring system |
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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20130603 |