Title :
A printed dipole antenna for wideband circular polarization operation
Author :
Bao, X.L. ; Ammann, M.J.
Author_Institution :
Sch. of Electron.&Commun. Eng., Dublin Inst. of Technol., Dublin
Abstract :
In this paper, a novel printed dipole antenna for wideband circular polarization is proposed, which comprises a pair of unequal arms with a small gap which is fed by an L-shaped microstrip feedline through a via. The proposed dipole antenna geometry is arranged so that the orthogonal surface currents have the appropriate phase to provide circular polarization. The effects of various antenna parameters are discussed and analyzed. The results show the impedance bandwidth for return loss below 10 dB is about 1.3 GHz from 2.49 GHz to 3.79 GHz or about 40.6% with respect to the centre frequency at 3.2 GHz, and the 3-dB axial ratio bandwidth is about 800 MHz from 2.92 GHz to 3.72 GHz or 24.2% with respect to the centre frequency at 3.3 GHz.
Keywords :
antenna feeds; broadband antennas; dipole antennas; electromagnetic wave polarisation; microstrip antennas; slot antennas; L-shaped microstrip feedline; orthogonal surface current; printed dipole antenna geometry; slotted groundplane; wideband circular polarization operation; Antenna feeds; Arm; Bandwidth; Broadband antennas; Dipole antennas; Frequency; Geometry; Microstrip antennas; Polarization; Surface impedance; Circularly Polarized; Printed Dipole Antenna; Unequal Arms;
Conference_Titel :
Antennas and Propagation, 2009. EuCAP 2009. 3rd European Conference on
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-4753-4
Electronic_ISBN :
978-3-00-024573-2
