Design of a miniaturized high-isolation dual-frequency antenna based on quarter-mode substrate integrated waveguide

Li Xiaolong; Liu Jiaxin; Guo Qinggong

doi:10.11884/HPLPB202537.240309

Volume 37 Issue 4

Mar. 2025

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Article Navigation > High Power Laser and Particle Beams > 2025 > 37(4): 043007

Li Xiaolong, Liu Jiaxin, Guo Qinggong. Design of a miniaturized high-isolation dual-frequency antenna based on quarter-mode substrate integrated waveguide[J]. High Power Laser and Particle Beams, 2025, 37: 043007. doi: 10.11884/HPLPB202537.240309

Citation:

Li Xiaolong, Liu Jiaxin, Guo Qinggong. Design of a miniaturized high-isolation dual-frequency antenna based on quarter-mode substrate integrated waveguide[J]. High Power Laser and Particle Beams, 2025, 37: 043007. doi: 10.11884/HPLPB202537.240309

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Design of a miniaturized high-isolation dual-frequency antenna based on quarter-mode substrate integrated waveguide

doi: 10.11884/HPLPB202537.240309

College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China

Received Date: 2024-09-05
Accepted Date: 2024-12-31
Rev Recd Date: 2024-12-05

Available Online: 2025-03-08

Publish Date: 2025-04-15

Abstract

Abstract

A dual-band antenna based on the quarter-mode substrate integrated waveguide (QMSIW) operating at 5.2GHz and 5.8GHz is designed and implemented. The QMSIW structure reduces the volume of the antenna while maintaining the characteristics of low loss and low profile of the substrate integrated waveguide (SIW). By adding two rows of metallized through holes to the QMSIW and etching two rectangular slots and asymmetric Y-shaped slots, the size is reduced and high isolation is achieved. After testing, the antenna gains at 5.2 GHz and 5.8 GHz are 6.0 and 6.1 dBi, respectively, with cross-polarization ratios greater than 25 dB and 20 dB, respectively. The proposed antenna achieves good miniaturization and high isolation (greater than 34 dB), with dimensions of 0.42λ₀×0.42λ₀× 0.01λ₀. The test results agree well with the simulation results.
- quarter-mode substrate integrated waveguide,
- high isolation,
- duplex,
- miniaturized antenna

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References(17)

References

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