Multilayer Substrate Integrated Waveguide (SIW) Filters With Higher-Order Mode Suppression

  title={Multilayer Substrate Integrated Waveguide (SIW) Filters With Higher-Order Mode Suppression},
  author={Dinghong Jia and Quanyuan Feng and Qianyin Xiang and Ke Wu},
  journal={IEEE Microwave and Wireless Components Letters},
This letter presents a multilayer approach for suppressing the higher order modes of substrate integrated waveguide (SIW) bandpass filters. Rectangular SIW resonators in multilayer substrates can be vertically coupled with magnetic and/or electric coupling by the proposed apertures etched on the middle metal layer. Harmonic passbands produced by the first higher-order mode TE102 can be suppressed thanks to the proposed weak coupling or mixed coupling schemes in connection with the TE102 mode… CONTINUE READING


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