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Compact dual‐band bandpass filter using slot‐line resonator
Author(s) -
Bao ZhiHua,
Chen JianXin,
Tang Hui,
Zhou LiHeng
Publication year - 2010
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.25485
Subject(s) - resonator , band pass filter , microwave , coupling (piping) , physics , attenuation , multi band device , filter (signal processing) , passband , topology (electrical circuits) , electronic engineering , acoustics , optoelectronics , optics , engineering , electrical engineering , mechanical engineering , quantum mechanics , antenna (radio)
This letter presents a novel compact dual‐band bandpass filter (BPF), which consists of two pairs of half‐guided wavelength slot‐line resonators. The two pairs of resonators, operating at different frequencies, generate two passbands for the proposed BPF by utilizing a novel coupling scheme. Tight coupling between the two resonators in each of the pairs can be simultaneously achieved, and the interaction between the two pairs is negligible. Thus the operation frequencies of the two passbands can be controlled independently. Several attenuation poles are created to enhance the selectivity of the proposed filter. The simulated and measured results are presented, showing good agreement. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52:2299–2300, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25485