Title :
Wideband printed antenna with circular polarization
Author :
Nesic, A. ; Jovanovic, S. ; Radnovic, I.
Author_Institution :
Inst. of Microwave Tech. & Electron., Belgrade, Yugoslavia
Abstract :
The paper presents a novel method of feeding of the single-feed printed antenna with circular polarization consisting of two orthogonal dipoles whose impedances are complexly conjugated thus obtaining quadrature feeding currents. A feeding line-balanced microstrip is placed perpendicularly to the antenna plate so that the parasitic coupling of the orthogonal dipoles and the feeding line is totally eliminated. In this manner, wider band is obtained. The VSWR is less than 2 in the frequency range of 26%, axial ratio AR<6 dB in the range of 13% and AR<3 dB in the range of 6%. The antenna is realized in the frequency range of about 5 GHz.
Keywords :
antenna feeds; dipole antennas; electric impedance; electromagnetic wave polarisation; microstrip antennas; microstrip lines; microwave antennas; 5 GHz; SHF; VSWR; antenna feeding method; antenna plate; axial ratio; circular polarization; feeding line-balanced microstrip; frequency range; impedances; orthogonal dipoles; parasitic coupling; quadrature feeding currents; single-feed printed antenna; wideband printed antenna; Antenna feeds; Broadband antennas; Dielectric substrates; Dipole antennas; Frequency; Impedance; Microstrip antennas; Mobile antennas; Polarization; Strips;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1997. IEEE., 1997 Digest
Conference_Location :
Montreal, Quebec, Canada
Print_ISBN :
0-7803-4178-3
DOI :
10.1109/APS.1997.631638
