Patent Number: 6,674,340

Title: RF MEMS switch loop 180.degree. phase bit radiator circuit

Abstract: A switched loop RF radiator circuit, comprising a radiator element, a RF input/output (I/O) port, and a balun coupled between the radiator element and the (I/O) port. The balun includes a 180.degree. switched loop circuit having transmission line legs coupled to a balun transition to provide a selectable phase shift, and a microelectromechanically machined (MEM) switch Many radiator circuits can be deployed in an electronically scanned antenna array.

Inventors: Quan; Clifton (Arcadia, CA), Pierce; Brian M. (Moreno Valley, CA)

Assignee: Raytheon Company

International Classification: H01Q 3/30 (20060101); H01P 5/10 (20060101); H01Q 3/38 (20060101); H01P 1/10 (20060101); H01P 1/12 (20060101); H01P 001/18 (); H01P 003/08 (); H01P 009/00 ()

Expiration Date: 01/06/2021