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http://dx.doi.org/10.12815/kits.2022.21.5.162

Study on TRX Channel Amplitude and Phase Calibration Method for a Radar Wind Profiler Based on 256 Active Phased Array  

Jung, Woo-Jae (Dept. of Electronic Convergence Engineering, Kwangwoon University)
Lee, Jong-Chul (Dept. of Electronic Convergence Engineering, Kwangwoon University)
Publication Information
The Journal of The Korea Institute of Intelligent Transport Systems / v.21, no.5, 2022 , pp. 162-170 More about this Journal
Abstract
In this paper, the phased-array transceiver (TRX) channel amplitude and phase calibration method for a radar wind profiler (RWP) based on the 256 active phased array is discussed. Without the additional module, the TX and RX calibration paths were secured using couplers and switches in the TRX front ends and the TRX switching duplexers, and the amplitude and phase of the 256 TRX were calibrated using a gain and phase detector. The beam widths and side lobes of five beams (vertical, east, west, south, and north) of the calibrated 256 active phased array antenna were confirmed by a near-field which agreed well with the simulation results. The proposed calibration method can be easily applied to a system based on an active phased array operated in an outdoor environment.
Keywords
Active phased array; Radar wind profiler; TRX channel; Amplitude and phase; Calibration;
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