Title :
Wideband bandpass filter using open stub loaded square ring
Author :
Cong Tang ; Xianqi Lin ; Yong Fan ; Kaijun Song ; Daotong Li
Author_Institution :
EHF Key Lab. of Fundamental Sci., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
fDate :
March 30 2015-April 1 2015
Abstract :
A wideband bandpass filter under multiple resonances of stepped impedance ring resonator is proposed in this letter. The classical even- and odd-mode method is used to analyze the characteristics of the proposed resonator. It is observed that the proposed filter can operate at a wideband. For demonstration, a filter with central frequency at 2 GHz and 3-dB fractional bandwidth (FBW) of 96.7% is designed and fabricated. The experiments have good agreement with simulation.
Keywords :
band-pass filters; microstrip filters; resonator filters; fractional bandwidth; frequency 2 GHz; multiple resonances; open stub loaded square ring; stepped impedance ring resonator; wideband bandpass filter; Band-pass filters; Filtering theory; Frequency measurement; Load modeling; Resonant frequency; Switches; Wideband; microstrip filter; stepped impedance ring resonator; wideband bandpass filter (BPF);
Conference_Titel :
Wireless Symposium (IWS), 2015 IEEE International
Conference_Location :
Shenzhen
DOI :
10.1109/IEEE-IWS.2015.7164515
