- 专利标题: Hybridized wideband notch filter topologies and methods
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申请号: US17216457申请日: 2021-03-29
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公开(公告)号: US11817893B2公开(公告)日: 2023-11-14
- 发明人: William Richard Smith, Jr. , Muhammed Ibrahim Sezan , Dan William Nobbe
- 申请人: pSemi Corporation
- 申请人地址: US CA San Diego
- 专利权人: pSemi Corporation
- 当前专利权人: pSemi Corporation
- 当前专利权人地址: US CA San Diego
- 代理机构: JAQUEZ LAND GREENHAUS & McFARLAND LLP
- 代理商 John Land, Esq.
- 主分类号: H04B1/10
- IPC分类号: H04B1/10 ; H04B1/04
摘要:
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.
公开/授权文献
- US20220311464A1 Hybridized Wideband Notch Filter Topologies and Methods 公开/授权日:2022-09-29
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