H‐plane horn antenna with very low side lobes using partially dielectric‐filled gap waveguide technology

IET Microwaves, Antennas & Propagation

Farzad Mohajeri¹  Mohammad Mohammadpour¹  Seyed Ali Razavi Parizi² 

[1] Department of Communications and Electronics School of Electrical and Computer Engineering Shiraz University Shiraz Fars Iran;Department of Electrical & Computer Engineering Graduate University of Advanced Technology Kerman Iran;

关键词: bandwidth;    fan beam pattern;    gap waveguide technology;    gain;    h‐plane horn antenna;    side lobe level;   

DOI  :  10.1049/mia2.12240

来源: DOAJ

【 摘 要 】

Abstract In this paper, two H‐plane horn antennae are designed using groove and ridge gap waveguide (GGW and RGW) techniques. In the proposed structures, the gap waveguide is partially filled with a dielectric to control the amplitude and phase distribution across the antenna aperture so that a very low side lobe level (SLL) can be achieved. Two sample antennae are designed and simulated for the frequency range from 12 to 16 GHz, and the prototypes are fabricated. The fabricated antennae show quite wide impedance bandwidth (S11 ≤ 10 dB) of 28% and 32% for the RGW and GGW versions, respectively. The obtained maximum side lobe level for the designed GGW and RGW horns is about −30 and −24 dB, respectively, over the operating bandwidth. In comparison with state‐of‐the‐art designs, the proposed structures introduce much lower SLL.

【 授权许可】

Unknown