POLARIZATION PLANE CONTROL ANTENNA, AND CALIBRATION METHOD OF POLARIZATION PLANE CONTROL ANTENNA

摘要

<P>PROBLEM TO BE SOLVED: To provide a polarization plane control antenna which performs calibration inexpensively and is suitable for operations under mobile environments. Ž<P>SOLUTION: The polarization plane control antenna has: a distribution part which distributes input signals to two paths based on a specified polarization angle; a balance circuit which includes first and second quadrature hybrids connected to outputs of the distribution part; a polarization wave sharing antenna which transmits an output of the second quadrature hybrid with orthogonal polarization; first and second amplitude phase controllers which change the amplitude and phase of each signal that is converted by the first quadrature hybrid; a means for connecting to an output of the second quadrature hybrid and extracting calibration signals flowing in the output; a means for measuring the levels of the extracted calibration signals; and a controller which sets a polarization angle for the distribution part, and gain and phase coefficients for first and second amplitude phase parts. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž