The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 06, 2007
Filed:
Jul. 29, 2004
Roland Cadotte, Jr., Freehold, NJ (US);
Roland Cadotte, Jr., Freehold, NJ (US);
Lockheed Martin Corporation, Bethesda, MD (US);
Abstract
An RF phase shifter includes the cascade of active and passive RF phase shift bits, having different phase increments. The active phase shift bit includes a FET with source and drain. First and second RF single-pole, double throw switches have their common elements coupled to the source and drain, respectively, for selectively connecting one of the in-phase source signals and out-of-phase drain signals to a third switch, and for coupling the non-selected signal to a reference. The third switch outputs the available signal. Additional phase increments may be included to achieve phase shifts or differences other than 180°.