Title :
Calibration and measurement of a wideband six-port polarimetric measurement system
Author :
Chen, Tzong-Jyh ; Chu, Tah-Hsiung
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
7/1/1997 12:00:00 AM
Abstract :
The principle of operation, calibration procedure, and experimental results of a wideband six-port polarimetric measurement system are described in this paper. This measurement system can measure the polarization states of incoming waves and the polarimetric scattering matrices of scattering targets from the wideband power data. The imbalances and coupling between antenna polarization channels and the characteristics of microwave components used in the measurement system are calibrated using three partly unknown scattering calibrators that are illuminated by four unknown-polarized calibrating waves
Keywords :
calibration; electromagnetic wave polarisation; electromagnetic wave scattering; matrix algebra; multiport networks; radar antennas; radar cross-sections; radar polarimetry; 7 to 17 GHz; antenna polarization channels; calibration procedure; coupling; incoming waves; microwave components; operation; partly unknown scattering calibrators; polarimetric scattering matrices; polarization states; scattering targets; unknown-polarized calibrating waves; wideband six-port polarimetric measurement system; Antenna measurements; Calibration; Flow graphs; Optical scattering; Polarization; Power measurement; Radar measurements; Receiving antennas; Transmission line matrix methods; Wideband;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
