Compact Multilayer Dual-mode Substrate Integrated Waveguide Filtering Crossover Based on Orthogonal Modes

Authors

  • Zhigang Zhang Fundamental Science on Extreme High Frequency Key Laboratory University of Electronic Science and Technology of China, Chengdu 611731, China
  • Yong Fan Fundamental Science on Extreme High Frequency Key Laboratory University of Electronic Science and Technology of China, Chengdu 611731, China

Keywords:

Dual-mode, filtering crossover, multilayer, substrate integrated waveguide (SIW)

Abstract

A novel multilayer substrate integrated waveguide (SIW) filtering crossover is proposed based on the orthogonal degenerate modes in SIW rectangular cavities (SIRCs). The degeneracy of dual-mode in multilayer SIRCs is used to realize the cross transmission and the orthogonality of the two modes is utilized to achieve the isolation relying on the four coupling slots located on metal layers. E-field distributions of the SIW cavities at TE102 and TE201 modes are studied for guiding the circuit realization. And then input/output and isolated ports can share the same resonator, which reduces the number of resonators by two. By adjusting the position of the coupling slots located between layers, the bandwidth can be controlled independently in a certain range without affecting the isolation effect. The detailed analysis and the design method based on coupling matrix have been first introduced to realize a third-order multilayer filtering crossover. Compared with other filtering crossovers, the proposed design exhibits good filtering responses, better isolation, lower loss, as well as compact size.

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Published

2020-05-01

How to Cite

[1]
Zhigang Zhang and Yong Fan, “Compact Multilayer Dual-mode Substrate Integrated Waveguide Filtering Crossover Based on Orthogonal Modes”, ACES Journal, vol. 35, no. 5, pp. 519–526, May 2020.

Issue

2020: Vol 35 Iss 5

Section

Articles