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2013-09-05
Novel Design of a Compact Triple-Band Bandpass Filter Using Short Stub-Loaded SIRs and Embedded SIRs Structure
By
Progress In Electromagnetics Research, Vol. 142, 309-320, 2013
Abstract
A novel compact planar triple-band bandpass filter using two sets of short stub-loaded stepped impedance resonators (SSLSIRs) and a pair of embedded stepped impedance resonators (ESIRs) has been proposed. The SSLSIRs can adjust the bandwidths of the corresponding passbands over a wide range, and the ESIRs employing non 0° -feed coupled structure with mixed electric and magnetic coupling can obtain an extra transmission zero. The embedded resonators structure can further miniaturize the dimensions of the whole triple-band filter. The operating frequencies of the SSLSIRs and ESIRs are designed for the applications of the WLAN (2.45/5.2 GHz) and WiMAX (3.5 GHz) systems, respectively. The simulated and measured results are both presented and show good agreement.
Citation
Kai-Da Xu, Yong-Hong Zhang, Daotong Li, Yong Fan, Joshua Le-Wei Li, William Joines, and Qing Huo Liu, "Novel Design of a Compact Triple-Band Bandpass Filter Using Short Stub-Loaded SIRs and Embedded SIRs Structure," Progress In Electromagnetics Research, Vol. 142, 309-320, 2013.
doi:10.2528/PIER13080507
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