Title:
FILTER CIRCUIT, METHOD FOR IMPROVING PERFORMANCE OF FILTER CIRCUIT, AND SIGNAL PROCESSING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/068668
Kind Code:
A1
Abstract:
A filter circuit, a method for improving the performance of a filter circuit, and a signal processing device. The filter circuit comprises a plurality of resonators, the plurality of resonators comprising a first number of series-connected resonators (20) and a second number of parallel-connected resonators (40); an input end of the filter circuit is connected to a first inductor (10), an output end of the filter circuit is connected to a second inductor (30), and a grounding end of the filter circuit is connected to a third inductor (50); the second number of parallel-connected resonators (40) of the filter circuit includes at least one designated parallel-connected resonator (60), and attribute parameters of the designated parallel-connected resonator (60) are different from attribute parameters of other parallel-connected resonators (40). In this way, the insertion loss and the roll-off of the filter circuit can be reduced.
Inventors:
PANG WEI (CN)
CAI HUALIN (CN)
CAI HUALIN (CN)
Application Number:
PCT/CN2020/111340
Publication Date:
April 15, 2021
Filing Date:
August 26, 2020
Export Citation:
Assignee:
UNIV TIANJIN (CN)
ROFS MICROSYSTEM TIANJIN CO LTD (CN)
ROFS MICROSYSTEM TIANJIN CO LTD (CN)
International Classes:
H03H7/09; H03H9/48
Foreign References:
| CN102077465A | 2011-05-25 | |||
| CN102077465A | 2011-05-25 | |||
| CN109983696A | 2019-07-05 | |||
| CN109983696A | 2019-07-05 | |||
| US20170047907A1 | 2017-02-16 | |||
| CN110798166A | 2020-02-14 | |||
| CN110798169A | 2020-02-14 | |||
| CN110768641A | 2020-02-07 | |||
| CN109639251A | 2019-04-16 | |||
| CN106664068A | 2017-05-10 | |||
| US6556103B2 | 2003-04-29 | |||
| CN102916674A | 2013-02-06 |
Attorney, Agent or Firm:
CHINA SMART INTELLECTUAL PROPERTY LTD. (CN)
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