Circularly polarized antenna based on mu-negative transmission line

Author

Byung-Chul Park ; Jeong-Hae Lee

Author_Institution

Dept. of Electron. & Electr. Eng., Hongik Univ., Seoul, South Korea

fYear

2014

fDate

6-11 April 2014

Firstpage

939

Lastpage

941

Abstract

A circularly polarized (CP) antenna based on mu-negative (MNG) transmission lines (TLs) is presented. The antenna consists of two pairs of resonators for two orthogonal polarizations. The 90° phase difference between them is achieved by detuning the corresponding resonance frequencies. The simulation results show that the 10 dB bandwidth (BW) of 29 MHz and 3 dB axial ratio (AR) BW of 7 MHz are obtained at 1.5 GHz. Also, the right-hand (RH) CP gain is 2.22 dBic in broadside direction and the minimum 3 dB AR beamwidth of 116° is simulated at φ = 60°. The results indicate that the antenna is suitable for the applications demanding for wide coverage area such as global position system (GPS) and wireless local area network (WLAN).

Keywords

UHF antennas; planar antenna arrays; polarisation; resonators; telecommunication transmission lines; AR; AR beamwidth; CP antenna; GPS; MNG TL; WLAN; axial ratio; bandwidth 29 MHz; bandwidth 7 MHz; broadside direction; circularly polarized antenna; frequency 1.5 GHz; global position system; mu-negative transmission line; orthogonal polarizations; phase difference; planar antenna; resonance frequency; resonators; right-hand CP gain; wide coverage area; wireless local area network; Gain; Global Positioning System; Resonant frequency; Transmission line antennas; Wireless LAN; Circularly polarized antennas; mu-negative transmission lines; wide 3 dB axial ratio beamwidth antennas; zeroth-order resonance antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (EuCAP), 2014 8th European Conference on

Conference_Location

The Hague

Type

conf

DOI

10.1109/EuCAP.2014.6901917

Filename

6901917