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Highly-Miniaturized Dual-Mode Bandpass Filter Based on Quarter-Mode Substrate Integrated Waveguide with Wide Stopband
Abstract
This paper presents a novel design of a highly-miniaturized dual-mode bandpass filter (BPF) employing a quarter-mode substrate integrated waveguide (QMSIW). The QMSIW resonator is based on a square cavity with metallic vias along two sides, and open-ended edges at the remaining sides that contain orthogonal feed lines. An open slot is introduced along the two sides of the square cavity with metallic vias to form a magnetic wall. A single metallic via is assigned at the corner of the two open-edged sides to form an electrical wall, which produces different resonances. By loading a slot diagonally, the mode frequencies can be controlled independently, which allows us to realize a second-order BPF. The detailed design steps and a flowchart explaining the filter’s topology evolution are presented. The eigen-mode analysis, field distributions, coupling matrix, and full-wave simulation of the proposed QMSIW filter topology are used to determine the filter’s operating principle. To verify the proposed theory, a second-order BPF is realized, fabricated, and demonstrated experimentally. The BPF prototype exhibits excellent performance such as a small footprint of 0.019λ2, a wide passband of 34.8-percent, low insertion loss of 0.43 dB, and a wide stopband of 3.36f0 with a rejection level greater than 20 dB. Excellent consistency is found between the EM-simulated and measured responses of the device.
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Authors (3)
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Rusan Kumar Barik
Cite as
Full text
- Publication version
- Accepted or Published Version
- DOI:
- Digital Object Identifier (open in new tab) 10.1109/ACCESS.2022.3168074
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
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IEEE Access
no. 10,
pages 42149 - 42156,
ISSN: 2169-3536 - Language:
- English
- Publication year:
- 2022
- Bibliographic description:
- Barik R. K., Kozieł S., Szczepański S.: Highly-Miniaturized Dual-Mode Bandpass Filter Based on Quarter-Mode Substrate Integrated Waveguide with Wide Stopband// IEEE Access -Vol. 10, (2022), s.42149-42156
- DOI:
- Digital Object Identifier (open in new tab) 10.1109/access.2022.3168074
- Sources of funding:
-
- COST_FREE
- Verified by:
- Gdańsk University of Technology
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