A circularly polarized antenna with conical beam

Author

Liu, Wendong ; Wei, Kunpeng ; Zhang, Zhijun ; Zheng, Jianfeng ; Feng, Zhenghe

Author_Institution

Tsinghua Nat. Lab. for Inf. Sci. & Technol., Tsinghua Univ., Beijing, China

fYear

2011

fDate

12-14 Dec. 2011

Firstpage

1

Lastpage

4

Abstract

A novel design of circular polarized antenna with conical beam is present in this paper. The antenna consists of four parts: (1) a horizontally polarized omnidirectional planar loop antenna (2) a vertical monopole (3) a reflector as well as the ground of the monopole (4) a feeding network. The horizontally polarized omnidirectional planar loop antenna and the reflector are combined to realize horizontally polarized conical pattern, while the vertically polarized conical pattern is obtained by a patch loaded monopole with a limited ground plane. Circularly polarized conical pattern can be obtained by exciting the two parts with 90° phase difference. Simulation results are present in the paper. The antenna exhibits an impedance bandwidth (S₁₁<;-10dB) of 60MHz at the centre frequency of 4GHz. The simulation axial ratio bandwidth (AR<;3dB) is about 20MHz. The peak gain is 4.5dBi and appears at around θ=42°.

Keywords

electromagnetic wave polarisation; loop antennas; microstrip antennas; microwave antennas; monopole antennas; omnidirectional antennas; planar antennas; bandwidth 60 MHz; circularly polarized antenna; circularly polarized conical pattern; conical beam; feeding network; frequency 4 GHz; horizontally polarized omnidirectional planar loop antenna; patch loaded monopole antenna; vertical monopole antenna; vertically polarized conical pattern; Bandwidth; Helical antennas; Impedance; Microstrip antennas; Reflector antennas; Horizontally polarized omnidirectional pattern; Zeroth-order resonantor; circular polarization; conical beam; mu-negative transmission line;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Design of Advanced Packaging and Systems Symposium (EDAPS), 2011 IEEE

Conference_Location

Hanzhou

ISSN

2151-1225

Print_ISBN

978-1-4673-2288-1

Electronic_ISBN

2151-1225

Type

conf

DOI

10.1109/EDAPS.2011.6213813

Filename

6213813