The array antenna whose it is possible to control the rectilinear plane of polarization, and has that the satellite communications earth station

摘要

PURPOSE: To provide an antenna capable of controlling a polarization plane without rotating an antenna surface. ;CONSTITUTION: Plural antenna elements 1 are provided with first and second power feeding points. Power outputted from a receiver or a transmitter-receiver 5 is distributed corresponding to a distribution ratio instructed from an instruction part 230 in a variable power distributor 4. The distributed power is inputted to two equal power distribution circuit 3 and the equal power is distributed to the respective antenna elements in the equal power distribution circuits 3. By changing the distribution ratio of the variable power distributor 4 by giving an instruction in the instruction part 230, the polarization plane is controlled.;COPYRIGHT: (C)1995,JPO