Authors :
Abdullah Bazergan; Muhammad Mimsyad; Sirmayanti; Yuliana Rauf
Volume/Issue :
Volume 8 - 2023, Issue 1 - January
Google Scholar :
https://bit.ly/3IIfn9N
Scribd :
https://bit.ly/3RCpymc
DOI :
https://doi.org/10.5281/zenodo.7614174
Abstract :
This paper studies a miniaturization of a
substrate-integrated waveguide (SIW) bandpass filter
(BPF) using only a square cavity. This cavity is to be
loaded with a multi-sector circular patch, where each
sectored patch is connected to the bottom surface of the
cavity through a shorting blind via. Each of the
shorting-via loaded sectored- patches and the cavity’s
top and bottom surfaces form a resonator. Hence,
multiple resonators can be housed in a single square
cavity and then are fed properly to construct a multipole BPF. For easy integration with surrounding circuit
components, itis to be considered by only the case
where the cavity is fed with the coplanar waveguide
(CPW) rather than the coaxial cable. The downshifts in
the resonance frequency of the proposed resonator
structure for the different number of sectors obtained
from a complete cicuit patch are studied. BPFs
constructed using one, two, and threesectored patches
are designed and compared. A sample BPF using three
sectored patches is fabricated and measured. As
compared with the third-order BPF using three empty
SIW cavities, the size reduction rate of the fabricated
one is up to 98%. A good agreement is obtained
between simulated results and those measured.
Keywords :
Miniaturization; trisection bandpass filter (BPF), SIW
This paper studies a miniaturization of a
substrate-integrated waveguide (SIW) bandpass filter
(BPF) using only a square cavity. This cavity is to be
loaded with a multi-sector circular patch, where each
sectored patch is connected to the bottom surface of the
cavity through a shorting blind via. Each of the
shorting-via loaded sectored- patches and the cavity’s
top and bottom surfaces form a resonator. Hence,
multiple resonators can be housed in a single square
cavity and then are fed properly to construct a multipole BPF. For easy integration with surrounding circuit
components, itis to be considered by only the case
where the cavity is fed with the coplanar waveguide
(CPW) rather than the coaxial cable. The downshifts in
the resonance frequency of the proposed resonator
structure for the different number of sectors obtained
from a complete cicuit patch are studied. BPFs
constructed using one, two, and threesectored patches
are designed and compared. A sample BPF using three
sectored patches is fabricated and measured. As
compared with the third-order BPF using three empty
SIW cavities, the size reduction rate of the fabricated
one is up to 98%. A good agreement is obtained
between simulated results and those measured.
Keywords :
Miniaturization; trisection bandpass filter (BPF), SIW
