A novel wide-band circularly polarized patch antenna based on L-probe and aperture-coupling techniques
- 10 January 2005
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Antennas and Propagation
- Vol. 53 (1) , 577-582
- https://doi.org/10.1109/tap.2004.838796
Abstract
The design and measurements of a wide-band patch antenna with circular polarization are presented. For the proposed antenna, an L-probe and an aperture are utilized to feed the patch orthogonally. The distance between the patch and the ground plane is 0.1 free-space wavelength at 1.8 GHz. Air is used as the dielectric substrate. A Wilkinson power combiner is connected to the feeds to generate circular polarization. The antenna possessed a 14-dB return loss bandwidth of 35% (from 1.49 to 2.12 GHz), and has a 3-dB axial ratio bandwidth of 20.4% (from 1.67 to 2.05 GHz). The 3-dB axial ratio beamwidth and the boresight axial ratio are 84/spl deg/ and 1.94 dB at 1.8 GHz, respectively.Keywords
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