Invention Publication
- Patent Title: Hybridized Wideband Notch-Filter Topologies and Methods
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Application No.: US18503965Application Date: 2023-11-07
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Publication No.: US20240137058A1Publication Date: 2024-04-25
- Inventor: William Richard Smith, Jr. , Muhammed Ibrahim Sezan , Dan William Nobbe
- Applicant: pSemi Corporation
- Applicant Address: US CA San Diego
- Assignee: pSemi Corporation
- Current Assignee: pSemi Corporation
- Current Assignee Address: US CA San Diego
- The original application number of the division: US17216457 2021.03.29
- Main IPC: H04B1/10
- IPC: H04B1/10 ; H04B1/04

Abstract:
Radio frequency (RF) acoustic wave resonator (AWR) filter circuits and methods. Embodiments essentially de-couple the stopband or notch characteristics of an RF filter from the passband characteristics. Accordingly, the de-coupled parameters can be individually designed to meet the specifications of a particular application. Partially-hybridized or fully-hybridized series-arm and parallel-arm AWR filter building blocks enable “de-coupled” RF filters having (1) wideband and low insertion loss passbands and (2) wideband deep notches (stopbands) with a specifically placed notch center frequency, without compromising the passband characteristics. The AWR filter building blocks include an inductance L that matches (resonates with) the electrostatic capacitance CO of the corresponding AWR within a desired passband. The resonance and anti-resonance frequencies of the building block AWRs are selected to be spaced apart from the specified passband in order to provide independent stopband or notch characteristics without substantially affecting the passband characteristics.
Public/Granted literature
- US12199653B2 Hybridized wideband notch-filter topologies and methods Public/Granted day:2025-01-14
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