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Haiwen Liu, Chinese Academy of Sciences, Chengdu, China; Xiaohua Li, University of Electronic Science and Technology of China, Chengdu, China

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A Modified Low Insertion Loss Dual-mode Filter Using Meander Spur-lines

A novel dual-mode filter with meander spur-lines is designed, fabricated and examined in this article. The meander spur-lines provide current distribution distortions and a size reduction of approximately 36 percent is obtained at the same resonant fre...

July 1, 2009

Haiwen Liu, Chinese Academy of Sciences, Chengdu, China; Xiaohua Li, University of Electronic Science and Technology of China, Chengdu, China

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Compared to traditional microstrip filters, the dual-mode patch resonator shows attractive features such as its sharp band rejection and compact size. In general, the dual-mode operation consists of two degenerate modes, which are excited by asymmetrical feed lines and some perturbation element(s) on the patch resonators. Moreover, in order...