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2016-01-12
Compact Inline Triplet SIW Filter with Embedded Short-Ended Microstrip Line
By
Progress In Electromagnetics Research C, Vol. 61, 127-130, 2016
Abstract
A compact triplet inline substrate integrated waveguide (SIW) bandpass filter is presented with sharp lower skirt and deep lower-stopband performance. The filter is composed of two SIW rectangular cavities and an embedded short-ended microstrip line on the top surface of two adjacent SIW cavities. A transmission zero can be generated by the cross coupling near the lower passband edge, which allows the filter implementation in inline with sharp lower skirt. Deep lower stopband performance is inherited from SIW. To validate the concept, a filter prototype with fractional bandwidth (FBW) of 4% at 5.75 GHz is designed, fabricated and measured. Good agreement can be obtained between the measured and simulated results.
Citation
Ji Ding, Tao Zhang, and Fan Liu, "Compact Inline Triplet SIW Filter with Embedded Short-Ended Microstrip Line," Progress In Electromagnetics Research C, Vol. 61, 127-130, 2016.
doi:10.2528/PIERC15120304
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