Details

Autor(en) / Beteiligte

• Cheng, Jui-Ching
• Li, Eric S.
• Chuang, Chin-Chung

Titel

Application of microstrip cavity couplers for wideband bandpass filters

Ist Teil von

• Microwave and optical technology letters, 2011-12, Vol.53 (12), p.2814-2817

Ort / Verlag

Hoboken: Wiley Subscription Services, Inc., A Wiley Company

Erscheinungsjahr

2011

Quelle

Wiley Online Library - AutoHoldings Journals

Beschreibungen/Notizen

• This article presents a design for wideband bandpass filters using a microstrip cavity coupler. The broadband nature of the cavity‐coupled designs is fully exploited for this application. Two additional circuits are introduced to improve the stopband performance of the cavity‐coupled bandpass filter. A prototype design example is presented with its center frequency located at 6.28 GHz. The design has the merits of wide bandwith of more than 140%, flat group delay within the passband, good insertion/return loss, and stopband attenuation of nearly 30 dB up to 30 GHz. The validity of the simulation results is verified experimentally. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2814–2817, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26410