Abstract
A simple and convenient approach for the calibration of cross polarized radar cross section (RCS) is presented. We have shown that a planar depolarizing chipless radio frequency identification (RFID) tag can be utilized as a reference calibration target for the calibration, especially for the characterization of its counterpart depolarizing chipless RFID tags. To prove the concept, one chipless RFID tag is used as a reference calibration tag and another one as a test tag. The designs of chipless RFID tags are based on RF encoding particle (REP) and taken from the literature. The experimental performance of the proposed method is compared with the ideal simulated RCS. The worst calibration error over a frequency range from 4 to 7 GHz is less than 3.11 dB, whereas the worst calibration error over a frequency range from 4 to 6 GHz is less than 2.51 dB.
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