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- Title
Harmonic-suppressing bandpass filter based on coupled triangular open-loop stepped-impedance resonators.
- Authors
Kuo-Sheng Chin; Deng-Jun Chen
- Abstract
This work develops two harmonic-suppressing bandpass filters. One has a direct-coupled-resonator structure and the other has a cross-coupled-resonator structure. The triangular open-loop stepped-impedance resonator is used to synthesize filters because it can create two tunable transmission zeros to suppress multi-spurious responses in the upper stopband. The coupling coefficients of typical coupled pairs of resonators and the external quality factors of two basic feeding configurations are exploited in filter synthesis. A three-pole Chebyshev filter and a four-pole selective-response filter are designed and fabricated herein. The first spurious peaks of these two experimental filters occur at five times and four times the operating frequency, respectively. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 187–191, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24866
- Subjects
ELECTRICAL harmonics; BANDPASS filters; ELECTRIC resonators; ELECTRIC impedance; ELECTRIC filters
- Publication
Microwave & Optical Technology Letters, 2010, Vol 52, Issue 1, p187
- ISSN
0895-2477
- Publication type
Article
- DOI
10.1002/mop.24866