Radio frequency system with tunable filters including tunable filter with mutually coupled inductors

US11722163B2 · kind B2 · utility

Assignee

• Skyworks Solutions, Inc. · US

Inventors

• Fei Jia · Calabasas, US
• Joshua Kawika Ellis · Cedar Rapids, US
• Kun Chen · Taoyuan, TW
• Shayan Farahvash · Sylvia Park, US
• Haisu Ju · Thousand Oaks, US
• Haibo Cao · Thousand Oaks, US

Key dates

• Filing date: Aug 24, 2021
• Grant date: Aug 8, 2023
• Expiry date: Aug 24, 2041

Classification

• Technology area (CPC —): General

Abstract

Aspects of this disclosure relate to a radio frequency system with tunable notch filtering. The radio frequency system includes a first tunable filter and a second tunable filter. The first tunable filter is coupled between an output of a power amplifier and a radio frequency switch. The second tunable filter includes mutually coupled inductors and a tunable impedance circuit electrically connected to at least one of the mutually coupled inductors. The second tunable filter is coupled between an antenna switch and an antenna node. Related methods and wireless communication devices are also disclosed.