Substrate-Integrated Waveguide Dual-Band Filters With Closely Spaced Passbands and Flexibly Allocated Bandwidths


Substrate-integrated waveguide (SIW) dual-band bandpass filters (BPFs) with closely spaced passbands and flexibly allocated bandwidths are presented based on TE102 and TE201 modes in substrate-integrated rectangular cavities (SIRCs). The constraint relationship among the first four mode resonances in an SIRC with its aspect ratio is theoretically analyzed… (More)


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