A New Tri-Band Bandpass Filter Based on Stub-Loaded Step-Impedance Resonator
作者： Wei-Yu Chen , Min-Hang Weng , Shoou-Jinn Chang
DOI: 10.1109/LMWC.2012.2187884
关键词:
摘要: A tri-band bandpass filter designed based on a stub-loaded step-impedance resonator (SIR) is proposed. The resonant behavior of the SIR analyzed. By properly controlling impedance ratio K1, length (α) and (r) SIR, center frequencies are at 1.575, 2.4, 3.5 GHz, respectively, corresponding to GPS, WLAN WiMAX applications. Furthermore, 0° feed structure used provide least one transmission zero near passband edge each passband, resulting in high selectivity. Experimental results show good agreement with simulated results.
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