US Patent 8073400 Multi mode radio frequency transceiver front end circuit

Patent 8073400 was granted and assigned to Rfaxis, Inc. on December, 2011 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Rfaxis, Inc.

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

8073400

Date of Patent

December 6, 2011

Patent Application Number

12428409

Date Filed

April 22, 2009

Patent Primary Examiner

‌

Lincoln Donovan

Patent abstract

A front end circuit for coupling an antenna to a first radio frequency (RF) transceiver and a second RF transceiver is contemplated. The RF transceivers have a signal input, a signal output, a receive enable line and a transmit enable line. In addition to an antenna port, the front end circuit has a first power amplifier and a first low noise amplifier both coupled to first RF transceiver, and a second power amplifier and a second low noise amplifier both coupled to the second RF transceiver. The front end circuit includes a matching network that couples the power amplifiers and the low noise amplifiers, the various outputs and inputs thereof being common.