Patent ID: 6492943
Filing Date: 2002-12-10
Classification: H01H,H01Q

Abstract:
A phased-array antenna apparatus used in a microwave or millimeter wave band and having a high gain, comprising M individual units arranged in the form of a matrix, each of said individual units comprising:a radiating element; a phase shifter coupled to said radiating element to shift a phase of a feeding signal supplied to said radiating element in units of N bits, wherein M and N are positive integers and M is not less than two; a phase shifting control circuit for controlling phase shifting of said phase shifter; and a feeding unit arranged to be coupled to said radiating element, wherein said phase shifter includes N phase shifting elements, and each of said N phase shifting elements includes distributed constant lines, and microwave switches connected to said distributed constant lines; said phased-array antenna further comprising a data distribution circuit for distributing control data, which is calculated to obtain a predetermined radiant beam, to scanning and signal lines, respectively, for said phase shifter of each of said M individual units.