Invention Grant
- Patent Title: Tunable filter for RF circuits
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Application No.: US14588311Application Date: 2014-12-31
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Publication No.: US10069479B1Publication Date: 2018-09-04
- Inventor: Laurent Desclos
- Applicant: Ethertronics, Inc.
- Applicant Address: US CA San Diego
- Assignee: Ethertronics, Inc.
- Current Assignee: Ethertronics, Inc.
- Current Assignee Address: US CA San Diego
- Agency: Dority & Manning, P.A.
- Main IPC: H03H11/12
- IPC: H03H11/12 ; H03F3/19 ; H03F3/21 ; H03F3/45 ; H04B1/04 ; H04B1/16 ; H03H19/00

Abstract:
A tunable filter is described where the frequency response as well as bandwidth and transmission loss characteristics can be dynamically altered, providing improved performance for transceiver front-end tuning applications. The rate of roll-off of the frequency response can be adjusted to improve performance when used in duplexer applications. The tunable filter topology is applicable for both transmit and receive circuits. A method is described where the filter characteristics are adjusted to account for and compensate for the frequency response of the antenna used in a communication system.
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