US Patent 8135355 Radio frequency transceiver front end circuit with parallel resonant circuit

Patent 8135355 was granted and assigned to Rfaxis, Inc. on March, 2012 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

Rfaxis, Inc.

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

8135355

Patent Inventor Names

Oleksandr Gorbachov0

Date of Patent

March 13, 2012

Patent Application Number

12412741

Date Filed

March 27, 2009

Patent Primary Examiner

‌

Tuan H Nguyen

Patent abstract

A front end circuit for coupling an antenna to a radio frequency (RF) transceiver for time domain duplex systems is disclosed. The front end circuit includes an antenna port, a power amplifier, a low noise amplifier, and a matching network. The output of the power amplifier and the input of the low noise amplifier are coupled to the matching network and connected in common to the antenna. The power amplifier and the low noise amplifier are activated and deactivated in sequence corresponding to the transmit and receive modes of the transceiver, and the matching network minimizes the effect that one has on the other at the designated operating frequency.

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