Title :
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
fDate :
March 30 2015-April 1 2015
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;
Conference_Titel :
Wireless Symposium (IWS), 2015 IEEE International
Conference_Location :
Shenzhen
DOI :
10.1109/IEEE-IWS.2015.7164621
