Title :
Probe-fed rectangular ring antenna with a cross-strip for low cross-polarization
Author :
Srimoon, Duang-arthit ; Phongcharoenpanich, Chuwong ; Krairiksh, Monai
Author_Institution :
Res. Center for Commun. & Inf. Technol., King Mongkut´´s Inst. of Technol. Ladkrabang, Bangkok
fDate :
5/1/2006 12:00:00 AM
Abstract :
In this paper, a probe-fed rectangular ring with a cross-strip for wireless local-area network system is proposed. The antenna is analyzed by using the three-dimensional finite-difference time-domain method. The effects of various parameters on the characteristics of the antenna are studied. The computed and measured results for the return loss and co- and cross-polarization patterns are presented and compared. A prototype antenna operating at 2.44 GHz shows an impedance bandwidth (2:1 VSWR) of 13.06% and a gain of 9.5 dBi. Good radiation characteristics, including a cross-polarization level in both E- and H-planes greater than 26 dB and a front-to-back ratio (F/B) of radiation pattern greater than 16 dB, have been obtained
Keywords :
UHF antennas; antenna feeds; antenna radiation patterns; electromagnetic wave polarisation; finite difference time-domain analysis; microstrip antennas; wireless LAN; 2.44 GHz; WLAN; cross-polarization level; cross-strip antenna; impedance bandwidth; probe-fed rectangular ring antenna; radiation pattern; three-dimensional finite-difference time-domain method; wireless local-area network system; Arm; Bandwidth; Finite difference methods; Geometry; Local area networks; Microstrip antennas; Probes; Time domain analysis; Wireless LAN; Wireless communication; Bandwidth enhancement; cross-strip; finite-difference time-domain (FDTD) method; low cross-polarization; ring antenna; unidirectional antenna; wireless local-area network (WLAN);
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2006.874356
