Patent · US Active

Tunable hybrid coupler

US9083518B2 · kind B2 · utility

10Cited 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	Jul 14, 2015
Priority date	—
Expiry date	Apr 9, 2033

Classification

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

Abstract

This disclosure includes embodiments of a tunable hybrid coupler. The tunable hybrid coupler includes a first inductive element having a first inductance, a second inductive element having a second inductance and mutually coupled to the first inductive element, a first variable capacitive element having a first variable capacitance, and a second variable capacitance having a second variable capacitance. The first variable capacitive element is coupled between a first port and a second port. The second variable capacitive element is coupled between a third port and a fourth port. The first inductive element is coupled from the first port to the third port, while the second inductive element is coupled from the second port to the fourth port. Accordingly, the tunable hybrid coupler may form an impedance matching network that is tunable to different radio frequency (RF) communication bands. The tunable hybrid coupler can be used in a tunable RF duplexer.

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