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Low-Cost Electrical Beam-Scanning Leaky-Wave Antenna Based on Bent Corrugated Substrate Integrated Waveguide

Lou, Tian, Yang, Xue-Xia, Qiu, Houtong, Luo, Qi, Gao, Steven (2019) Low-Cost Electrical Beam-Scanning Leaky-Wave Antenna Based on Bent Corrugated Substrate Integrated Waveguide. IEEE Antennas and Wireless Propagation Letters, 18 (2). pp. 353-357. ISSN 1536-1225. (doi:10.1109/LAWP.2019.2890995) (KAR id:72825)

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This letter presents a novel low-cost leaky-wave antenna (LWA) with the fixed-frequency beam-scanning capability. An improved half-mode corrugated substrate integrated waveguide structure is proposed as the guiding wave structure to reduce the transverse size of the antenna. A novel electronic phase-shifting structure, composed of fan-shaped open stubs with different sizes and PIN diodes, is proposed for beam scanning. This LWA uses interdigital slots as radiating elements, and the phase-shifting structure is placed between the adjacent radiating elements. By changing the switching states of these PIN diodes, the phase difference between the adjacent radiating elements can be controlled. To verify the concept, one prototype of the 2 × 6 array antenna at C -band is designed, simulated, fabricated, and measured. The antenna demonstrates a beam-scanning range of 25° (34°–59°) at fixed frequency, a peak gain of 12.4 dBi with the gain variation less than 2.3 dB. The antenna has low cost and can be easily fabricated using standard printed circuit board process.

Item Type: Article
DOI/Identification number: 10.1109/LAWP.2019.2890995
Uncontrolled keywords: Beam-scanning antenna, leaky-wave antenna (LWA), PIN diode, substrate integrated waveguide
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: Steven Gao
Date Deposited: 01 Mar 2019 16:27 UTC
Last Modified: 16 Feb 2021 14:03 UTC
Resource URI: (The current URI for this page, for reference purposes)
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