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Dual-Mode Bandpass Filters Using Microstrip Slotted Equilateral Triangular Patch Resonators

Weiliang HU, Zhewang MA, Yoshio KOBAYASHI, Tetsuo ANADA, Gen HAGIWARA

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Summary :

Two compact and low loss dual-mode filters are proposed by using degenerate modes of slotted triangular microstrip patch resonators. The geometrical size and radiation loss of the triangular patch are reduced simultaneously by loading both horizontal and vertical slots. The resonant frequencies of two degenerate modes can be easily controlled by varying the dimensions and positions of the slots. A two-pole dual-mode filter operating at 3.94 GHz with a fractional bandwidth of 4.3% is designed, fabricated, and measured. The measured results verify well the theoretical predictions.

Publication
IEICE TRANSACTIONS on Electronics Vol.E89-C No.4 pp.503-508
Publication Date
2006/04/01
Publicized
Online ISSN
1745-1353
DOI
10.1093/ietele/e89-c.4.503
Type of Manuscript
Special Section PAPER (Special Section on Advanced RF Technologies for Compact Wireless Equipment and Mobile Phones)
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