Millimeter Wave Microstrip Leaky-Wave Antenna Based on SIW and CSRR for Vehicle Application

Feng Gao; Feng-Xiang Li; Bing Wu; Yu-Ying Jin; Guo-Qiang HE

doi:10.20944/preprints202311.0876.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 13 November 2023 / Approved: 14 November 2023 / Online: 14 November 2023 (10:28:49 CET)

A millimeter-wave microstrip leaky-wave antenna array based on the substrate-integrated waveguide (SIW) and the complementary split-ring resonator (CSRR) is proposed in this paper. The slow wave characteristics of the SIW are enhanced by etching two rows of symmetrical CSRR-type slots on the surface of the SIW layer. The magnetic coupling between the CSRR-SIW layer and equally spaced circular patches array on the upper layer realizes the radiation of electromagnetic energy. In the 23~30 GHz (relative bandwidth 26.4%) operating frequency band, the horizontal polarization radiation beam scanning from -62° to -2° is realized, with a peak gain of 9.6~11.7 dBi, and the cross-polarization ratio is more than 43.8 dB.

Leaky-wave antenna; complementary split resonant ring; low cross-polarization level

Engineering, Electrical and Electronic Engineering

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Millimeter Wave Microstrip Leaky-Wave Antenna Based on SIW and CSRR for Vehicle Application

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