Patent · US Active

Tunable duplexer architecture

US9042275B2 · kind B2 · utility

8Cited by

11References

25Claims

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	May 26, 2015
Priority date	—
Expiry date	Feb 25, 2033

Classification

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

Abstract

A tunable radio frequency (RF) duplexer is disclosed. The tunable RF duplexer includes a first hybrid coupler, a second hybrid coupler, and an RF filter circuit. The first hybrid coupler is operable to split an RF receive input signal into first and second RF quadrature hybrid receive signals (QHRSs). The first hybrid coupler is also operable to split an RF transmission input signal into first and second RF quadrature hybrid transmission signals (QHTSs). The RF filter circuit is operable to pass the first and second RF QHRSs to the second hybrid coupler and to reflect the first and second RF QHTSs back to the first hybrid coupler. Additionally, the second hybrid coupler is configured to combine the first and second RF QHRSs into an RF receive output signal, while the first hybrid coupler is configured to combine the first and second RF QHTSs into an RF transmission output signal.

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