Abstract
AbstractThis paper describes the design of a narrow bandpass filter with attenuation poles used at high frequencies. The filter circuit is new and consists of coupled lines and resonators. This paper analyzes how the filter characteristics vary with these circuit parameters. A bandpass filter designed with the results is fabricated and tested. It is confirmed that a narrow bandpass filter with a relative bandwidth of 0.3% is obtained at a center frequency of 1 GHz. © 2003 Wiley Periodicals, Inc. Electron Comm Jpn Pt 1, 86(6): 19–24, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/ecja.10067
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