International Symposium on Antennas and Propagation
CALIBRATION-FREE DOA-ESTIMATION BY THE DIFFERENTIAL ARRAY ANTENNA
Hiromi MATSUNO, Hiroyuki ARAI,
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To estimate DOA, we need to calibrate the mutual coupling and phase and amplitude differences between channels. However it is required for the calibration to prepare several signals from known sources. Installing these sources make the system complex, especially in the real propagation environment. Therefore, a calibration-free DOA system is very attractive in practical application. In this paper, we propose a new type of array antenna, "Differential Array Antenna estimating DOA without calibration. We present this new antenna array by simulation and experiment in anechoic chamber.