Abstract
AbstractThis article presents a novel ultra‐wideband bandpass filter with controllable notched bands, compact size, and relaxed fabrication requirements.Its implementation is based on a rectangular slot ring resonator with an embedded S‐shaped slotline. The behavior of the rectangular slot ring resonator is characterized and subsequently adopted to build the wide passband. The notched band necessary for rejecting wireless local‐area network (WLAN) signals is implemented by the S‐shaped slotline. A prototype filter is implemented based on the proposed structure and good agreement is found between simulations and measurements. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1980–1984, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25381
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