Title:
FILTER CIRCUIT, METHOD FOR IMPROVING PERFORMANCE OF FILTER CIRCUIT, AND SIGNAL PROCESSING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/068669
Kind Code:
A1
Abstract:
The present application provides 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 comprise a first number of series resonators and a second number of parallel resonators. The input end of the circuit is connected to a first inductor, the output end of the circuit is connected to a second inductor, and the grounding end of the circuit is connected to a third inductor. The second number of parallel resonators comprise at least one specified parallel resonator, the attribute parameters of the specified parallel resonator are different from those of other parallel resonators, and the attribute parameters comprise frequency. In this way, the insertion loss and roll-off of the filter circuit can be improved.
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Inventors:
PANG WEI (CN)
CAI HUALIN (CN)
CAI HUALIN (CN)
Application Number:
PCT/CN2020/111341
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:
H03H7/01
Domestic Patent References:
| WO2017219251A1 | 2017-12-28 |
Foreign References:
| CN110798166A | 2020-02-14 | |||
| CN110798168A | 2020-02-14 | |||
| CN110798169A | 2020-02-14 | |||
| US20100207707A1 | 2010-08-19 | |||
| CN109983696A | 2019-07-05 |
Attorney, Agent or Firm:
CHINA SMART INTELLECTUAL PROPERTY LTD. (CN)
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