A cavity-backed end-fire dipole antenna using SISL technology for 24 GHz automotive anti-collision radar system

摘要

This paper presents a cavity-backed dipole antenna based on substrate-integrated suspended line (SISL) platform. By utilizing the double side substrate-integrated suspended line (DSISL) feeding network, the substrate and radiation loss are significantly decreased, thus efficiency of better than 95.50% is achieved. The proposed antenna obtained the measured 10 dB impedance bandwidth of 7.18 GHz, i.e., from 21.75 to 28.93 GHz, which covers the 24.25-26.65 GHz automotive anti-collision radar system band. Moreover, the proposed antenna can be fabricated by conventional printed circuit board (PCB) process, and it can be easily integrated with other planar circuit and applied in the 24-GHz radar system.