Patent · US Active

RF transceiver with distributed filtering topology

US9071430B2 · kind B2 · utility

4Cited by

11References

20Claims

0Family size

Assignee

RF Micro Devices, Inc. · US

Inventors

Ruediger Bauder · Feldkirchen-Westerham, DE
Marcus Granger-Jones · Scotts Valley, US
Nadim Khlat · Cugnaux, FR

Key dates

Filing date	Feb 6, 2013
Grant date	Jun 30, 2015
Priority date	—
Expiry date	Apr 18, 2033

Classification

Technology area (CPC H)Electricity
CPC primaryH04B1/44
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

This disclosure includes embodiments of a radio frequency (RF) transceiver having a distributed duplex filtering topology. The RF transceiver includes a power amplifier and a tunable RF duplexer. The tunable RF duplexer is configured to input an RF transmission input signal from the power amplifier, generate an RF transmission output signal that operates within an RF transmission band in response to the RF transmission input signal from the power amplifier, and simultaneously output the RF transmission output signal to an antenna and input an RF receive input signal that operates within an RF receive band from the antenna. The power amplifier includes a plurality of RF amplifier stages coupled in cascode and an RF filter coupled between a first one of the RF amplifier stages and a second one of the RF amplifier stages. Accordingly, the RF filter is configured to provide tuning within the RF receive band.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.