A novel very compact ultra-wide band double ridge horn antenna

Dalili Oskouei, Hamidreza; Zamini, Hassan; Shojaei, Jalal; Shahbazi, Hossein; Mohammadi Shirkolaei, Morteza

doi:10.22034/joeds.2025.515816.1090

A novel very compact ultra-wide band double ridge horn antenna

Document Type : Original Article

Authors

hamidreza dalili oskouei ¹

Hassan zamini ¹

jalal Shojaei ²

hossein Shahbazi ¹

Morteza Mohammadi Shirkolaei ³

¹ دانشکده تحصیلات تکمیلی-دانشگاه هوایی شهید ستاری

² دانشگاه افسری امام علی (ع)

³ Shahid Sattari University of Aeronautical Engineering

10.22034/joeds.2025.515816.1090

Abstract

Abstract – In this article, a new wideband double-ridge horn antenna with very compact dimensions is presented. The structure of the proposed Antenna includes a double ridge, cavity back, and corrected sidewalls. In this paper, the dimension of the horn antenna has been compacted and the bandwidth improved by using FR4 dielectric substrate sidewalls and deforming upper and down metal walls. For designing this entire horn antenna, three-dimensional electromagnetic field simulation software Ansoft HFSS based on the finite element method is applied. To experimentally verify the performance, a prototype of the antenna is fabricated and measurement is performed. The dimensions of the antenna are 95 * 85 * 68 mm3 . The bandwidth of this antenna is between 1.7 and 20 GHz and the antenna gain is between 5.5 and 15.5 dBi. Also, the antenna radiation pattern is directional without deterioration in total bandwidth. The proposed antenna can be used in direction finder systems and noise jammers.

Keywords

Keywords"

compact dimension"

double ridge"

and "

ultrawide band"