Patent · US Active

System and method for bypassing a low noise amplifier

US10320350B1 · kind B1 · utility

6Cited by

5References

9Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Thomas Leitner · Dortmund, DE
Daniel Schroegendorfer · Linz, AT
Hans-Dieter Wohlmuth · Munich, DE

Key dates

Filing date	Mar 27, 2018
Grant date	Jun 11, 2019
Priority date	—
Expiry date	Mar 27, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH03F2203/7239
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

In accordance with an embodiment, a radio frequency (RF) amplifier circuit includes a switchable capacitance circuit having a first terminal configured to be coupled to an input matching inductor. The switchable capacitance circuit is configured to provide a short circuit between the first and second terminals in a first state, and provide a first capacitive impedance between the first and second terminals in a second state. The RF amplifier also includes a low noise amplifier (LNA) having an input terminal coupled to the second terminal of the switchable capacitance circuit; and a bypass switch coupled to an output of the LNA, the second terminal of the switchable capacitance circuit, and an output of the RF amplifier circuit. The bypass switch is configured to select the output of LNA in the first state, and select the second terminal of the switchable capacitance circuit in the second state.

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