Miniaturized differential bandpass filter with improved common-mode suppression for healthcare facilities

Author

Hui Wang ; Fei Jiang ; Wei-Chao Li ; Yi Yang

Author_Institution

28th Res. Inst., Dept. of Syst. Overall Demonstration, China Electron. Technol. Group Corp. (CETC), Nanjing, China

fYear

2015

fDate

March 30 2015-April 1 2015

Firstpage

1

Lastpage

4

Abstract

Compact differential bandpass filters (BPFs) using coupled ring resonators are investigated in this work. Good differential-mode (DM) filtering performances, improved common-mode (CM) suppression, and miniaturized size are obtained and discussed. Two BPFs named Filter A and Filter B are presented and analyzed to validate the theory, respectively. Compared with Filter A, Filter B shows much improved CM rejection due to the loaded open circuited stubs. In addition, both Filter A and Filter B exhibit more than 85% size reduction by reconstructing the ring resonators scientifically. Simulated and measured results show good agreement in low insertion loss, better than 15 dB return loss, more than 20 dB CM suppression of Filter A and 40 dB of Filter B. These advantages are much required in healthcare facilities.

Keywords

band-pass filters; biomedical equipment; health care; resonator filters; BPF; CM suppression; DM filtering performance; common mode suppression; coupled ring resonator; differential-mode filtering performance; healthcare facility; insertion loss; miniaturized differential bandpass filter; return loss; Filtering theory; Loss measurement; Medical services; Optical ring resonators; Resonator filters; Size measurement; Differential bandpass filter; common-mode suppression; miniaturized size;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Symposium (IWS), 2015 IEEE International

Conference_Location

Shenzhen

Type

conf

DOI

10.1109/IEEE-IWS.2015.7164621

Filename

7164621