Compact Slotted Waveguide Antenna Array Using Staircase Model of Tapered Dielectric-Inset Guide for Shipboard Marine Radar

Sensors

Kyei Anim¹  Henry Abu Diawuo¹  Young-Bae Jung¹ 

[1] Electronics Engineering Department, Hanbat National University, Daejeon 34158, Korea;

关键词: beam scanning;    dielectric-inset guide;    high gain;    low weight;    marine radar;    radiation efficiency;   

DOI  :  10.3390/s21144745

来源: DOAJ

【 摘 要 】

This paper presents a new configuration of a slotted waveguide antenna (SWA) array aimed at the X-band within the desired band of 9.38~9.44 GHz for shipboard marine radars. The SWA array, which typically consists of a slotted waveguide, a polarizing filter, and a metal reflector, is widely employed in marine radar applications. Nonetheless, conventional slot array designs are weighty, mechanically complex, and geometrically large to obtain high performances, such as gain. These features of the conventional SWA are undesirable for the shipboard marine radar, where the antenna rotates at high angular speed for the beam scanning mechanism. The proposed SWA array herein reduces the conventional design’s size by 62% using a tapered dielectric-inset guide structure. It shows high gain performance (up to 30 dB) and obtains improvements in radiation efficiency (up to 80% in the numerical simulations) and weight due to the use of loss and low-density dielectric material.

【 授权许可】

Unknown