Double ridged horn antenna designs for wideband applications

Author

Ghorbani, M. ; Khaleghi, A.

Author_Institution

K.N. Toosi Univ. of Technol., Tehran, Iran

fYear

2011

fDate

17-19 May 2011

Firstpage

1

Lastpage

4

Abstract

In this paper, different double ridged horn antenna (DRHA) designs are investigated for wideband applications. A classic design of 1-18 GHz DRHA with exponential ridges is modelled and the antenna pattern deficiencies are detected at frequencies above 12 GHz. The antenna pattern is optimized by modification of the antenna structure. However, the impedance matching is affected and the VSWR is increased at the frequencies below 2 GHz. The matching problem can be resolved by adding lossy materials to the back cavity of antenna. We have shown reduction of the antenna efficiency by 15% over the whole frequency range, except at the lower frequencies.

Keywords

antenna radiation patterns; horn antennas; impedance matching; microwave antennas; DRHA designs; VSWR; antenna pattern deficiency; double ridged horn antenna designs; efficiency 15 percent; frequency 1 GHz to 18 GHz; impedance matching; wideband applications; Antenna radiation patterns; Broadband antennas; Cavity resonators; Electromagnetic compatibility; Horn antennas; Materials; Antenna; Double ridged horn; EMC tests; Wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Engineering (ICEE), 2011 19th Iranian Conference on

Conference_Location

Tehran

Print_ISBN

978-1-4577-0730-8

Electronic_ISBN

978-964-463-428-4

Type

conf

Filename

5955679