Abstract
In this paper, we present a balun filter and a balanced filter based on substrate integrated waveguide (SIW). By fully utilizing the EM-field properties, only one SIW cavity is needed to realize the presented second-order balun or balanced filter. After properly arranging the locations of input/output ports in a $TE_{102}$ and $TE_{201}$ orthogonal modes SIW cavity, the desired 180° phase difference of balun or balanced filter can be obtained. Hence, filtering responses can be easy integrated to the balun or balanced circuits. The design methods of the two circuits are presented. For demonstration, a balanced filter is fabricated and measured. Good agreement between simulated and measured results verifies the proposed ideas.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.