Invention Grant
US09455680B2 Tunable RF filter structure formed by a matrix of weakly coupled resonators
有权
可调谐RF滤波器结构由弱耦合谐振器的矩阵组成
- Patent Title: Tunable RF filter structure formed by a matrix of weakly coupled resonators
- Patent Title (中): 可调谐RF滤波器结构由弱耦合谐振器的矩阵组成
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Application No.: US14298829Application Date: 2014-06-06
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Publication No.: US09455680B2Publication Date: 2016-09-27
- Inventor: Dirk Robert Walter Leipold , George Maxim , Baker Scott
- Applicant: RF Micro Devices, Inc.
- Applicant Address: US NC Greensboro
- Assignee: Qorvo US, Inc.
- Current Assignee: Qorvo US, Inc.
- Current Assignee Address: US NC Greensboro
- Agency: Withrow & Terranova, P.L.L.C.
- Main IPC: H03H7/09
- IPC: H03H7/09 ; H03H7/46 ; H03H7/01 ; H03F3/193 ; H04B1/10 ; H03F1/56 ; H03F3/24 ; H03F3/68 ; H03F3/72 ; H04B1/18

Abstract:
RF filter structures are disclosed that may have multiple filter paths, which are provided by weakly coupled resonators. The filter paths may be interconnected so that additional filter paths may be realized between input and output terminals of the RF filter structures. In this manner, the weakly coupled resonators from the filter paths may be arranged in a matrix. In one embodiment, an RF filter structure includes a first filter path and a second filter path. The first filter path includes (at least) a first pair of weakly coupled resonators while a second filter path that includes (at least) a second pair of weakly coupled resonators. To interconnect the first filter path and the second filter path, a cross-coupling capacitive structure is electrically connected between the first filter path and the second filter path. As such, an additional filtering path may be realized through the interconnection provided by the cross-coupling capacitive structure.
Public/Granted literature
- US20140361848A1 TUNABLE RF FILTER STRUCTURE FORMED BY A MATRIX OF WEAKLY COUPLED RESONATORS Public/Granted day:2014-12-11
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