A tri-section substrate integrated waveguide filtering power divider with a wide stopband

Abstract

In this article, a substrate integrated waveguide (SIW) power divider with tri-section filtering topology is proposed. Two TE₁₀₁-mode SIW cavities and one TE₁₀₂-mode SIW cavity are placed in the upper and lower substrate layers, respectively. Two vertically stacked SIW cavities are excited simultaneously by one section of SIW. The TE₁₀₂-mode SIW cavity is introduced to achieve 180°- phase conversion. And then, two controllable transmission zeros and a wide stopband can be obtained. Finally, a tri-section SIW filtering power divider sample is fabricated using the printed circuit board (PCB) technology; and good agreements are achieved in the measured and simulated S-parameters.

KEYWORDS:

• Substrate integrated waveguide
• tri-section filtering
• wide stopband

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported, in part, by the Information Foundation [grant numbers 1901A051, 1801C221, 1801C231].