A modified microstrip circular patch resonator filter

Circular holes are etched off a microstrip disk resonator. This results in a size reduction of 30%. By offsetting the positions of some of these holes, a degenerate orthogonal mode is excited, resulting in a split-mode bandpass filter. This filter can be considered as a lattice-type structure. A fil...

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Bibliographic Details
Published inIEEE microwave and wireless components letters Vol. 12; no. 7; pp. 252 - 254
Main Authors Tiong Tan, Boon, Teck Chew, Siou, Seng Leong, Mook, Leong Ooi, Ban
Format Journal Article
LanguageEnglish
Published New York, NY IEEE 01.07.2002
Institute of Electrical and Electronics Engineers
Subjects
Applied sciences
Band pass filters
Bandwidth
Circuit properties
Disks
Dubnium
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Etching
Exact sciences and technology
Excitation
Loss measurement
Magnetic separation
Microstrip filters
Microstrip resonators
Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits
Microwaves
Oscillators, resonators, synthetizers
Packaging
Resonant frequency
Resonator filters
Resonators
Size reduction
Performance evaluation
Circuit design
Resonator filters
Insertion loss
Band pass filter
Disk resonator
Microwave resonator
Microstrip resonator
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Summary:Circular holes are etched off a microstrip disk resonator. This results in a size reduction of 30%. By offsetting the positions of some of these holes, a degenerate orthogonal mode is excited, resulting in a split-mode bandpass filter. This filter can be considered as a lattice-type structure. A filter with a bandwidth of 8% centered at 2.0 GHz was designed. The measured insertion loss is 0.6 dB.
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ISSN:1531-1309
1558-1764
DOI:10.1109/LMWC.2002.801135