Patent · US Active

System and method for a radio frequency filter

US11012051B2 · kind B2 · utility

1Cited by

15References

27Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Stefan Helmut Schmalzl · Sauerlach, DE
Peter Pfann · Munich, DE
Ruediger Bauder · Feldkirchen-Westerham, DE
Hans-Joerg Timme · Ottobrunn, DE

Key dates

Filing date	Dec 5, 2018
Grant date	May 18, 2021
Priority date	—
Expiry date	Dec 5, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH10N30/853
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

In accordance with an embodiment, an RF system includes a transmit path having a transmit RF filter and an adjustable transmit phase shifter/matching network coupled between the transmit RF filter and a transmit antenna port, where the adjustable transmit phase shifter/matching network is configured to transform an impedance of the transmit RF filter at a receive frequency from a first lower impedance to a first higher impedance at the transmit antenna port; and a receive path having a receive RF filter and an adjustable receive phase shifter/matching network coupled between the receive RF filter and a receive antenna port, where the adjustable receive phase shifter/matching network is configured to transform an impedance of the receive RF filter at a transmit frequency from a second lower impedance to a second higher impedance at the receive antenna port.

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