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:
Dec. 02, 2003
Filed:
May. 30, 2002
Jeffrey M. Yang, Long Beach, CA (US);
Yun-Ho Chung, Redondo Beach, CA (US);
Matt Y. Nishimoto, Torrance, CA (US);
Northrop Grumman Corporation, Los Angeles, CA (US);
Abstract
A bi-directional amplifier ( ) for a transceiver module for amplifying both transmit signals and receive signals propagating in opposite directions. The amplifier ( ) includes first and second common gate FETs ( ) electrically coupled along a common transmission line ( ). A first variable matching network ( ) is electrically coupled to the transmission line ( ) between a transmit signal input port ( ) and the first FET ( ), and a second variable matching network ( ) is electrically coupled to the transmission line ( ) between a receive signal input port ( ) and the second FET ( ). An interstage variable matching network ( ) is electrically coupled to the transmission line ( ) between the first and second FETs ( ). A DC voltage regulator ( ) provides a DC bias signal to the matching networks ( ) and the FETs ( ) so that different signal amplifications and different impedance matching characteristics can be provided for the transmit signal and the receive signal.