Title:
METHOD FOR ESTIMATING SINGLE-CHANNEL ANTENNA FAR-FIELD ANTENNA FACTOR BY USING TIME-FREQUENCY ANALYSIS FOR MEASUREMENT
Document Type and Number:
WIPO Patent Application WO/2017/206320
Kind Code:
A1
Abstract:
The prevent invention provides a method for estimating a single-channel antenna far-field antenna parameter by using time-frequency analysis for measurement. The method is applied to log-periodic dipole array antennas spaced apart by a distance of 10 meters. The method uses a time-frequency analysis method to effectively inhibit some undesired reflections occurring in the single antenna method, and estimates a far-field antenna factor by using the antenna distance estimated by the time-frequency method. In addition, an antenna radiation center distance correction consensus is used for estimating the far-field antenna factor of the log-periodic dipole array antennas. Compared with far-field antenna factors estimated using other methods, the antenna factor estimated by this method has better far-field gain compatibility, and the frequency difference within a frequency range from 300 MHz to 1,000 MHz is less than 0.3 dB at a place where the antenna distance is 5 meters.
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Inventors:
ZHANG CONG (CN)
Application Number:
PCT/CN2016/093510
Publication Date:
December 07, 2017
Filing Date:
August 05, 2016
Export Citation:
Assignee:
SHENZHEN FANXI EELECTRONICS CO LTD (CN)
International Classes:
G01R29/10
Domestic Patent References:
| WO2003062840A1 | 2003-07-31 |
Foreign References:
| CN102818942A | 2012-12-12 | |||
| CN101308177A | 2008-11-19 |
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