Characteristics study of the helicone for a dual-band and dual-polarization horn

Author

Zhang, Lin ; Zheng, Huili ; Song, Jinghai

Author_Institution

Nat. Key Lab. of Antenna & Microwave Technol., Xidian Univ., Xi´´an, China

Volume

2

fYear

2010

fDate

17-20 Sept. 2010

Firstpage

1

Lastpage

3

Abstract

In this letter, a circular polarization radiator for a dual-band and dual-polarization horn is designed. The radiator consists of a cylindrical helix excited in the axial mode inside a conical horn. Using a conical horn the antenna gain increases, the sidelobe and backlobe levels decrease. With the cylindrical helix, the antenna has the characteristics of circular polarization and broad bandwidth. This antenna is fed by the coaxial cable, so a quarter turn of the helix parallel to the base plate is added for impedance matching. The aperture field and far field expressions are given. Simulated and measured results for voltage standing wave ratio, gain, axial ratio, and radiation patterns of the helicone are presented and show good agreement.

Keywords

antenna feeds; antenna radiation patterns; coaxial cables; electromagnetic wave polarisation; helical antennas; horn antennas; impedance matching; axial ratio; circular polarization radiator; coaxial cable; conical horn; cylindrical helix; dual-band horn; dual-polarization horn; helicone; impedance matching; radiation patterns; voltage standing wave ratio;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals Systems and Electronics (ISSSE), 2010 International Symposium on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-6352-7

Type

conf

DOI

10.1109/ISSSE.2010.5606947

Filename

5606947