Title :
An advance design approach for circular polarization of the microstrip antenna with unbalance DGS feedlines
Author :
Thakur, J.P. ; Park.J.-S.
Abstract :
A novel design approach is offered to attain circular polarization of the microstrip antenna fed by unbalanced vertical feedlines. Usually, diagonally balanced-line feeds with hybrid couplers are used to attain circular polarization. Here, defected ground structures (DGSs) have been implemented under the unbalanced feedlines to achieve circular polarization. Adopting DGSs make it easy to tune antennas for circular polarization by varying the impedance of the feedlines.
Keywords :
antenna feeds; electromagnetic wave polarisation; microstrip antennas; circular polarization; defected ground structures feedlines; microstrip antenna; unbalanced feedlines; Antenna feeds; Couplers; Frequency; Impedance; Microstrip antennas; Mobile antennas; Mobile communication; Optical polarization; Radiofrequency identification; Satellite antennas; Branch line coupler; circular polarization; defected ground structures (DGSs); dual feed; microstrip antenna;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2006.872425
