標題: Compact Microstrip Bandpass Filters Using Miniaturized Slow-Wave Quarter-Wavelength Resonators
作者: Chang, Wei-Shin
Liang, Cheng-Hsien
Chang, Chi-Yang
電信工程研究所
Institute of Communications Engineering
關鍵字: Terms Bandpass filter (BPF);capacitive loading;inter digital;microstrip line;slow wave;transmission zero
公開日期: 1-Jan-2010
摘要: This paper proposes a novel lambda/4 microstrip slow wave resonator with interdigital capacitive fingers. The interdigital fingers provide a strong capacitive loading so as to miniaturize the resonator size. The resonant frequency is easily adjusted by varying the number of fingers and the spacing between fingers. To demonstrate the feasibility of the proposed structure, one four-pole Chebyshev and one four-pole generalized Chebyshev filter with 0.05 dB equal-ripple bandwidths of 7.5% and 5%, respectively, were designed and fabricated. An extra transmission zero can be close to the passband for high selectivity and stopband attenuation by using the proposed slow-wave resonator and the tapped input/output structure. Both filters are compact in size and exhibit good stopband rejection.
URI: http://hdl.handle.net/11536/146397
期刊: 2010 ASIA-PACIFIC MICROWAVE CONFERENCE
起始頁: 1958
結束頁: 1961
Appears in Collections:Conferences Paper