A high performance bandpass filter with a wide and deep stopband by using square stepped impedance respnators

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題名:	A high performance bandpass filter with a wide and deep stopband by using square stepped impedance respnators
作者:	Yang, Ru-Yuan Hsiung, Chin-Min Hung, Cheng-Yuan Lin Chih-Chih 洪政源 (東方技術學院電子與資訊系)
貢獻者:	東方技術學院電子與資訊系
日期:	2010-07
上傳時間:	2014-03-27 15:58:36 (UTC+8)
摘要:	In this paper, a microstrip bandpass filter with a wide and deep stopband by using the modified stepped-impedance resonator (SIR) was designed and implemented. The modified SIR is formed by properly folding the conventional SIR to be a square open-loop SIR. By analyzing the admittance of the even and odd mode, the transmission zero of the modified SIR can be easily found, thus having a wide and deep stopband simultaneously. Bandpass filter (BPF) can have high performances with a wide and deep stopband as well as good selectivity by using the proposed SIR, compared to the conventional SIR. A filter example centered at f0 of 1.26 GHz has been implemented to verify the design concept. The results showed that the \|S 21\| was greater than 65 dB at the spurious response of 2f 0 and a wide stopband with a rejection level over 50 dB is extended from 1.5f 0 to 3.5f 0. Moreover, experimental results have a good agreement with the simulated results.
關聯:	Journal of Electromagnetic Waves and Applications, Vol.24 no.11-12, pp.1673-1683 Journal of Electromagnetic Waves and Applications, Vol.24 no.11-12, pp.1673-1683
顯示於類別:	[電子與資訊系(遊戲動畫系、動畫科)] 期刊論文

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