Title:
FILTER UNIT HAVING COUPLING INDUCTOR, FILTER, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/125341
Kind Code:
A1
Abstract:
The present invention relates to an LC filter unit, comprising: a first filtering part comprising a first inductor and a first capacitive device that are connected in parallel; and a second filtering part comprising a second inductor and a second capacitive device that are connected in parallel, wherein the first inductor and the second inductor are suitable for coupling to form a coupling inductor; the first capacitive device and the second capacitive device may be a resonator; an Fs frequency of the resonator is outside of a passband of the filter unit, and an Fp frequency of the resonator falls within the passband; and the resonator may be an FBAR resonator. The present invention further relates to a filter having the filter unit, and an electronic device having the filter unit or the filter.
Inventors:
PANG WEI (CN)
CAI HUALIN (CN)
CAI HUALIN (CN)
Application Number:
PCT/CN2019/120978
Publication Date:
June 25, 2020
Filing Date:
November 26, 2019
Export Citation:
Assignee:
UNIV TIANJIN (CN)
ROFS MICROSYSTEM TIANJIN CO LTD (CN)
ROFS MICROSYSTEM TIANJIN CO LTD (CN)
International Classes:
H03H1/00
Foreign References:
| CN1239846A | 1999-12-29 | |||
| CN104682910A | 2015-06-03 | |||
| CN104333339A | 2015-02-04 | |||
| JP2006310895A | 2006-11-09 |
Attorney, Agent or Firm:
BEIJING JINCHENG TONGDA & NEAL LAW FIRM (CN)
Download PDF: