Design of a miniaturized ultra-wideband compound spiral antenna

Author

Na Liu ; Pengfei Yang ; Weijiang Wang

Author_Institution

Sch. of Inf. & Electron., Beijing Inst. of Technol., Beijing, China

fYear

2013

fDate

25-28 Aug. 2013

Firstpage

255

Lastpage

258

Abstract

This paper presents an ultra-wideband compound spiral antenna fed by a wideband balun. The antenna is studied as an isolated element and as a part of a spiral-based ground-penetrating radar (GPR) detection system. The geometry of this antenna combine equiangular spiral and Archimedean spiral smoothly. The outer of spiral line is made a complex deformation. Moreover, an especial reflection cavity is used to achieve a good directionality. The final antenna has a size of φ 60mm × 60mm, which is only 10.9% than the conventional planar spiral antenna. Result shows the antenna achieved a good performance of VSWR, axial ratio and gain from 1GHz~18.5GHz, which meets the needs of the UWB GPR detection system.

Keywords

UHF antennas; antenna feeds; electromagnetic wave reflection; ground penetrating radar; microwave antennas; radar antennas; radar detection; spiral antennas; ultra wideband antennas; Archimedean spiral line; UWB GPR detection system; VSWR; axial ratio; complex deformation; isolated element; miniaturized ultra-wideband compound spiral antenna; planar spiral antenna; reflection cavity; spiral-based ground-penetrating radar; wideband balun; Cavity resonators; Compounds; Impedance matching; Spirals; Ultra wideband antennas; Archimedean spiral; Equiangular spiral; Miniaturized; Ultra-wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Technology & Computational Electromagnetics (ICMTCE), 2013 IEEE International Conference on

Conference_Location

Qingdao

Type

conf

DOI

10.1109/ICMTCE.2013.6812453

Filename

6812453