Title:
FILTER CIRCUIT AND METHOD FOR IMPROVING PERFORMANCE OF FILTER CIRCUIT, AND SIGNAL PROCESSING DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/068671
Kind Code:
A1
Abstract:
Provided are a filter circuit and a method for improving the performance of a filter circuit, and a signal processing device. The filter circuit comprises a plurality of resonators, wherein the plurality of resonators comprise a first number of series-connected resonators and a second number of parallel-connected resonators; an input end of the circuit is connected to a first inductor, an output end of the circuit is connected to a second inductor, and a grounding end of the circuit is connected to a third inductor; and the first number of series-connected resonators of the filter circuit include at least one specified series-connected resonator, and the attribute parameter of the specified series-connected resonator is different from that of the other series-connected resonators, wherein the attribute parameter comprises: the frequency of the resonator. Therefore, the insertion loss and roll-off of the filter circuit can be alleviated.
Inventors:
PANG WEI (CN)
CAI HUALIN (CN)
CAI HUALIN (CN)
Application Number:
PCT/CN2020/111343
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:
H03H9/46
Domestic Patent References:
| WO2019078157A1 | 2019-04-25 |
Foreign References:
| CN110768641A | 2020-02-07 | |||
| CN110798166A | 2020-02-14 | |||
| CN110798168A | 2020-02-14 | |||
| CN110798169A | 2020-02-14 | |||
| CN109600125A | 2019-04-09 | |||
| CN109639255A | 2019-04-16 |
Attorney, Agent or Firm:
CHINA SMART INTELLECTUAL PROPERTY LTD. (CN)
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