A Novel Design of a Low-loss and Low-cost Ku-Band Bandpass Filter for VSAT Applications
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Date
2025-09
Authors
Ta, M. V.
Phuong, K. K.
Trong, N. D.
Linh, N. T.
Huong, T. T. T.
Hung, N. T.
Manh, L. D.
ORCID
Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Radioengineering Society
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Abstract
This paper proposes a novel method to design low-loss and low-cost Ku-band bandpass filters for VSAT applications based on substrate-integrated-waveguide technology. Narrow bandpass filters employed high-order resonant mode TE301 exhibited high selectivity. However, its bandwidth is not enough for VSAT applications. In this paper, we proposed a method to widen the bandwidth of narrow-band filters to meet the bandwidth requirement of VSAT applications. This approach maintains high selectivity while still achieves low insertion loss. The proposed filter was fabricated using a low-cost material. Measurement shows a good agreement with simulated results. Mid-band measured insertion loss and return loss were -1.8 dB and -19.4 dB, respectively. Such low losses were obtained owing to taking advantage of a high-quality factor of high-order mode TE301 of oversized rectangular cavities
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Citation
Radioengineering. 2025 vol. 34, č. 3, s. 445-451. ISSN 1210-2512
https://www.radioeng.cz/fulltexts/2025/25_03_0445_0451.pdf
https://www.radioeng.cz/fulltexts/2025/25_03_0445_0451.pdf
Document type
Peer-reviewed
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Published version
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Language of document
en