Advances in Slotted Waveguide Array Antenna Technology

Rengarajan, S.R.

doi:10.1109/comcas44984.2019.8958050

Cited by 2 publications

(1 citation statement)

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“…Although they have promising features, such as low profile, low cost, and fabrication ease, their low-power handling capacity and high losses often make them less suitable for marine radar [ 18 , 19 , 20 ]. Consequently, the slotted waveguide array (SWA) antennas [ 21 , 22 , 23 , 24 , 25 ], based on the pioneering work published by Elliot [ 26 , 27 , 28 ], are widely employed in marine radar applications. This is because of their high-power handling capacity, low losses, and good phase stability.…”

Section: Introductionmentioning

confidence: 99%

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

Anim

Diawuo

Jung

2021

Sensors

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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.

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