title: Novel hexagonal dual-mode substrate integrated waveguide filter with source-load coupling.
abstract: Hexagonal dual-mode cavity and its application to substrate integrated waveguide (SIW) filter are presented. The hexagonal SIW resonator which can combine flexibility of rectangular cavity and performance of circular cavity is convenient for dual-mode bandpass filters design. By introducing coupling between source and load, the filter not only has good selectivity due to two controllable transmission zeros, but also has a small size by the virtue of its single-cavity structure. A demonstration filter with a center frequency of 10 GHz and a 3 dB fractional bandwidth of 4% is designed and fabricated to validate the proposed structure. Measured results are in good agreement with simulated ones.
authors.affiliation: Research Institute of Electronic Science and Technology, University of Electronic Science and Technology of China, Chengdu 611731, China.
authors.forename: Ziqiang
authors.identifier: 0000-0002-8258-5342
authors.initials: Z
authors.lastname: Xu
authors.affiliation: Research Institute of Electronic Science and Technology, University of Electronic Science and Technology of China, Chengdu 611731, China.
authors.forename: Gen
authors.initials: G
authors.lastname: Zhang
authors.affiliation: Research Institute of Electronic Science and Technology, University of Electronic Science and Technology of China, Chengdu 611731, China.
authors.forename: Hong
authors.identifier: 0000-0003-2974-5623
authors.initials: H
authors.lastname: Xia
authors.affiliation: Research Institute of Electronic Science and Technology, University of Electronic Science and Technology of China, Chengdu 611731, China.
authors.forename: Meijuan
authors.initials: M
authors.lastname: Xu