US 7,321,339 B2
Phase shifters for beamforming applications
Farrokh Mohamadi, 8 Halley, Irvine, Calif. 92612-3797 (US)
Filed on Jul. 15, 2005, as Appl. No. 11/182,344.
Application 11/182344 is a continuation in part of application No. 11/141283, filed on May 31, 2005.
Claims priority of provisional application 60/643989, filed on Jan. 14, 2005.
Prior Publication US 2006/0284783 A1, Dec. 21, 2006
Int. Cl. H01Q 21/00 (2006.01)
U.S. Cl. 343—853  [343/700 MS] 14 Claims
OG exemplary drawing
 
1. An integrated circuit antenna array, comprising:
a substrate,
a plurality of antennas adjacent the substrate; and
a plurality of distributed phase shifters, wherein each phase shifter corresponds uniquely to a subset of the antennas and couples to its subset of antennas through a corresponding RF network, and wherein each phase shifter includes a plurality of capacitors coupled to the corresponding RF network through corresponding switches such that if a given one of the switches is activated, the corresponding capacitor will load the corresponding RF feed network and thereby phase shift RF signals on the corresponding RF network.