Design, fabrication and testing of microwave bandpass filter using metamaterial integrated rectangular waveguide
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Paresh R. Sagar
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Arpan H. Shah
Abstract
This paper presents RF/Microwave rectangular waveguide bandpass filter integrated with two-layer of periodical metamaterial SRR unit cell structure excited by proper EM wave boundary conditions. A properly constructed PCB-based metamaterial unitcell is integrated as a resonating circuit within a rectangular waveguide WR229. In order to achieve bandpass response, the metamaterial unit cell in the metallic waveguide of the designed RF bandpass filter is kept at λ g /4 spacing. Two open-ring resonators connected by a short stub are used to design the metamaterial unit-cell, which is fabricated on a Rogers 48350B substrate with a dielectric constant of εr =3.48 and thickness of 1.52 mm. In addition, the metallic cavity generated with the CNC milling technology is zinc-coated to resist oxidation. The experimental results of the final prototype show good agreement with the overall wave modeling results. The proposed RF/microwave waveguide filters operated in the S-band frequency range; therefore, their applicability is recognized in RF sensing device for material characterization.
Acknowledgments
The authors would like to thanks Microwave Sensor Laboratory of Electronics Department, Vellore Institute of Technology, Vellore providing research facility.
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Research ethics: Not applicable.
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Informed consent: Not applicable.
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Author contributions: The authors has accepted responsibility for the entire content of this manuscript and approved its submission.
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Use of Large Language Models, AI and Machine Learning Tools: None declared.
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Conflict of interest: The authors state no conflict of interest.
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Research funding: None declared.
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Data availability: Not applicable.
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© 2025 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Review Articles
- Advances in antenna design through characteristic modes: a review of simulation techniques and development
- A review on soft computing optimization techniques for electromagnetics
- Editorial
- Design of wideband filtering phase shifters with wide stopband
- Research Articles
- Balanced BPFs with wideband CM suppression and high selectivity based on double-sided parallel-strip line
- Balanced dual-band BPF with enhanced DM selectivity and stopband suppression
- Balanced dual-wideband BPF utilizing quad-mode slotline resonator
- Design, fabrication and testing of microwave bandpass filter using metamaterial integrated rectangular waveguide
- High-gain UWB Fabry–Perot cavity antenna with dual-notched band for high-resolution imaging applications
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Artikel in diesem Heft
- Frontmatter
- Review Articles
- Advances in antenna design through characteristic modes: a review of simulation techniques and development
- A review on soft computing optimization techniques for electromagnetics
- Editorial
- Design of wideband filtering phase shifters with wide stopband
- Research Articles
- Balanced BPFs with wideband CM suppression and high selectivity based on double-sided parallel-strip line
- Balanced dual-band BPF with enhanced DM selectivity and stopband suppression
- Balanced dual-wideband BPF utilizing quad-mode slotline resonator
- Design, fabrication and testing of microwave bandpass filter using metamaterial integrated rectangular waveguide
- High-gain UWB Fabry–Perot cavity antenna with dual-notched band for high-resolution imaging applications
- A four port MIMO antenna using chip resistor based decoupling in 5G and 6G applications
- Contactless early-stage deep seated breast tumor detection using circular slotted patch antenna
- An ultraminiaturized implantable antenna with low SAR for biotelemetry
