Please use this identifier to cite or link to this item: https://hdl.handle.net/11499/7731
Title: Design of quad-band bandpass filter using nested dual-mode square loop resonators
Authors: Karpuz, Ceyhun
Görür, A.K.
Özek, Ahmet
Karaca, Z.
Keywords: bandpass filter
Dual-mode
microstrip
quad-band
Bandpass filters
Resonators
Dual modes
Microstrip band-pass filter
Microstripes
Open-circuited stub
Perturbation effect
Quad bands
Resonance frequencies
Transmission zeros
Microstrip filters
Publisher: Institute of Electrical and Electronics Engineers Inc.
Abstract: In this letter, design of a quad-band microstrip bandpass filter is presented by using nested placed four dual-mode square loop resonators (DMSLR) having different electrical lengths. Arms of the square loop resonators (SLR) are formed with low/high impedance parts, in order to obtain a maximum miniaturization by nesting DMSLRs and perturbation effects by changing the lengths of low impedance parts for the excitation of degenerate modes. Thus, the proposed configuration allows the control of mode frequencies, bandwidths and transmission zeros for each passband individually. Resonators are coupled to input/output (I/O) ports by feedlines having open-circuited stubs which suppress the harmonics. A dual-mode quad-band bandpass filter has been designed with an electrical length of 0.25?<inf>g</inf> × 0.25?<inf>g</inf> and fabricated, where ?<inf>g</inf> is the guided wavelength at 1.79 GHz (the lowest resonance frequency). Measured and simulated results are in a good agreement. © 2014 European Microwave Association.
URI: https://hdl.handle.net/11499/7731
https://doi.org/10.1109/EuMC.2014.6986592
ISBN: 9782874870354
Appears in Collections:Mühendislik Fakültesi Koleksiyonu
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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