Patent ID: 6392596
Filing Date: 2002-05-21
Classification: G01S,H01Q,H04B

Abstract:
A single-port weighting system for applying phase and/or amplitude weights to received microwave signals, comprising:an array of antenna elements; a microwave power combiner; a plurality of I/Q weighting circuits that each directly connects a respective one of said antenna elements to said power combiner and includes: a) one of a hybrid coupler and a summer connected to that circuit's respective antenna element; b) the other of said hybrid coupler and said summer connected to said power combiner; c) a first microwave mixer coupled between a first port of said hybrid coupler and a first port of said microwave summer; and d) a second microwave mixer coupled between a second port of said hybrid coupler and a second port of said microwave summer; wherein said first and second mixers have input ports for application of said weights; and a single microwave downconverter coupled to said power combiner and having a single output port for access to said received signals.