Compact Dual-Band Bandpass Filter Using Quadruple-Mode Square Ring Loaded Resonator (SRLR)
作者： Haiwen Liu , Baoping Ren , Xuehui Guan , Jiuhuai Lei , Shen Li
DOI: 10.1109/LMWC.2013.2247749
关键词: Passband 、 Square (algebra) 、 Band-pass filter 、 Resonator 、 Center frequency 、 Transmission (telecommunications) 、 Physics 、 Wavelength 、 Electronic engineering 、 Optics 、 Filter (video)
摘要: A compact quadruple-mode square ring loaded resonator (SRLR) is proposed in this letter. Distinct mode splitting characteristics of the SRLR are investigated and explained by using even- odd-mode analysis. It results to excite four resonant modes which applied produce two pairs transmission poles for dual-band bandpass filter (BPF) design. Based on unique SRLR, a miniaturized BPF operating at 2.45 GHz 5.20 WLAN applications was designed fabricated. Multiple zeros generated improve selectivity filter. Measurements good agreement with simulations. Also, circuit size occupies only 0.11λg×0.23λg, where λg guided wavelength center frequency first passband.
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