Title :
Balanced filter circuit based on open/shorted loaded stubs
Author :
Wenjie Feng ; Wenquan Che ; Haidong Chen ; Quan Xue
Author_Institution :
Dept. of Commun. Eng., Nanjing Univ. of Sci. & Technol., Nanjing, China
Abstract :
A novel balanced filter circuit based on open/shorted loaded stubs is proposed. Two transmission zeros near the passband for the differential mode can be easily achieved. In addition, the common mode can be suppressed from 0 GHz to three octaves with insertion loss greater than 25 dB, due to the all-stop transmission characteristic of the coupled lines. A prototype with 3-dB fractional bandwidth of 12.9% for the differential mode is designed and fabricated.
Keywords :
band-pass filters; coupled circuits; poles and zeros; all-stop transmission characteristic; balanced filter circuit; common mode; coupled lines; differential mode; open-shorted loaded stubs; passband filter; transmission zeros; Passband; Balanced filter; bandwidth; coupled lines; differential/common mode; open/shorted stubs;
Conference_Titel :
Microwave Symposium (IMS), 2015 IEEE MTT-S International
Conference_Location :
Phoenix, AZ
DOI :
10.1109/MWSYM.2015.7166729
