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Novel trapezoidal planar dual‐mode bandpass filter using one single patch resonator
Author(s) -
Xiao Jiankang,
Li Ying
Publication year - 2006
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.21939
Subject(s) - band pass filter , resonator , miniaturization , electronic engineering , microstrip , microwave , engineering , multi band device , electrical engineering , coupling (piping) , filter (signal processing) , planar , acoustics , topology (electrical circuits) , physics , telecommunications , computer science , mechanical engineering , computer graphics (images) , antenna (radio)
Microstrip bandpass filters are widely used in a variety of microwave systems, particularly in transmitter and receiver sections etc. to select a desired band of frequencies. However, common bandpass filters have deficiencies such as several resonators coupling, coupling gaps, only one attenuation pole in frequency responses, and so on. This paper proposes a triangular dual‐mode bandpass filter and two types of trapezoidal dual‐mode bandpass filters using one single patch resonators with corner cuts or crossed slots. It shows degenerate dual‐mode with corner cuts and unequaled crossed slots can improve the performances of filter greatly. The proposed filters have outstanding virtues such as novel and simple structures as they have one single patch without coupling gaps, small volume, easy integration and miniaturization, and so on. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 2142–2145, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21939