Theory and experiment of dual-mode microstrip triangular patch resonators and filters |
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Authors: | Jia-Sheng Hong Shuzhou Li |
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Affiliation: | Dept. of Electr. Electron., & Comput. Eng., Heriot-Watt Univ., Edinburgh, UK; |
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Abstract: | In this paper, we report on the results of an investigation into dual-mode operation of microstrip triangular patch resonators and their applications for designing dual-mode bandpass filters. It has been found theoretically that the dual modes can result from the rotation and superposition of a fundamental mode. The characteristics of the dual modes and their mode splitting are described. The applications of this new type of dual-mode microstrip patch resonator in the design of microwave planar filter are presented. A circuit model for operation of this type of filter is proposed. Two- and four-pole filters of this type are demonstrated for the first time. Both theoretical and experimental results are presented. |
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