A High-Gain Series-Parallel Millimeter-Wave SIW Cavity-Backed Patch Array
This paper presents a wideband and high-gain 4 × 4 substrate integrated waveguide (SIW) cavity-backed patch array with a simplified feeding network for operation in the millimeter-wave (mmW) band. Furthermore, to improve gain and suppress the sidelobe level, a stepped waveguide horn is vertically in...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
The Korean Institute of Electromagnetic Engineering and Science
2025-03-01
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| Series: | Journal of Electromagnetic Engineering and Science |
| Subjects: | |
| Online Access: | https://www.jees.kr/upload/pdf/jees-2025-2-r-285.pdf |
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| Summary: | This paper presents a wideband and high-gain 4 × 4 substrate integrated waveguide (SIW) cavity-backed patch array with a simplified feeding network for operation in the millimeter-wave (mmW) band. Furthermore, to improve gain and suppress the sidelobe level, a stepped waveguide horn is vertically integrated with each SIW cavity-backed patch. The proposed 4 × 4 array comprises eight series of 2 × 1 subarrays and a simplified 4-way power distribution network. In addition, two types of series-parallel 4 × 1 subarrays are examined to achieve a low sidelobe level. For verification, the proposed 4 × 4 antenna array was fabricated and measured, with the results showing good agreement with the simulations. The fabricated array prototype realized a −10 dB impedance bandwidth of 14.7% in the 24–27.8 GHz frequency band, with a peak gain of 22.05 dBi. Overall, based on its advantages—wide band, high gain, low cost, and compact feeding network—the proposed array can be considered a potential candidate for use in mmW wireless applications. |
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| ISSN: | 2671-7255 2671-7263 |