%0 Journal Article
%T Miniaturized Microstrip Dual-Mode Filter with Three Transmission Zeros
%A Shanshan Gao
%A Shao-Qiu Xiao
%A Jia-Lin Li
%J PIER     Letters
%D 2012
%I EMW Publishing
%R 10.2528/PIERL12033002
%X A novel miniaturized microstrip dual-mode filter using a half wavelength resonator with centrally loaded open stub and quasi-L shaped feed-lines is proposed. The advantage of using such a resonator is inherently generating a transmission zero by itself. To further improve the selectivity, quasi-L shaped feed-lines are introduced to create additional transmission zeros. Theoretical and simulated analyses of this filter are performed. A demonstration filter centered at 2.33 GHz with a fractional bandwidth of 4.7% is designed, fabricated and measured to validate the design methodology.
%U http://www.jpier.org/pierl/pier.php?paper=12033002