Title :
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
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;
Conference_Titel :
Antennas and Propagation (EuCAP), 2014 8th European Conference on
Conference_Location :
The Hague
DOI :
10.1109/EuCAP.2014.6901917
