Title :
Slot-coupled microstrip antenna for broadband circular polarisation
Author :
Su, C.-W. ; Row, J.-S.
Author_Institution :
Dept. of Comput. & Commun. Eng., Chienkuo Technol. Univ., Chang-Hua, Taiwan
fDate :
3/16/2006 12:00:00 AM
Abstract :
A microstrip antenna with broadband circular polarisation (CP) is presented. The proposed microstrip antenna has a circular patch and is excited by a series microstrip-line-feed configuration through the coupling of a ring slot in the ground plane. The broadband operation is achieved by coupling two CP resonant elements, which are due to the circular patch and the ring slot, respectively. A typical prototype using foam material of thickness 5 mm as the antenna substrate is constructed. Measured results show the 3 dB-axial-ratio bandwidth centred at 2500 MHz is more than 10%.
Keywords :
antenna feeds; broadband antennas; electromagnetic wave polarisation; foams; microstrip antennas; microstrip lines; slot antennas; 2500 MHz; CP resonant elements; antenna substrate; broadband circular polarisation; broadband operation; circular patch; foam material; ground plane; microstrip antennas; microstrip-line-feed configuration; ring slot; slot-coupled antennas;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20064040
