Polarization reconfigurable wheel-shaped antenna with conical-beam radiation pattern
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review
Author(s)
Related Research Unit(s)
Detail(s)
Original language | English |
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Pages (from-to) | 491-499 |
Journal / Publication | IEEE Transactions on Antennas and Propagation |
Volume | 63 |
Issue number | 2 |
Online published | 18 Dec 2014 |
Publication status | Published - Feb 2015 |
Link(s)
Abstract
This paper introduces a polarization reconfigurable wheel-shaped antenna with wide bandwidth and conical-beam radiation pattern. A wideband circular-monopolar patch surrounded by eight reconfigurable coupling loop stubs can generate conical-beam radiation patterns with different polarizations. This polarization reconfigurable characteristic is realized by controlling PIN diodes on the coupling loop stubs. The center-fed circular patch operates with the vertically-polarized conical-beam radiation and the coupling loop stubs radiate the horizontally-polarized wave propagation. With choosing proper magnitudes and phase differences between the two orthogonal radiations from the monopolar patch and the loop stubs, a circularly-polarized conical-beam radiation can be obtained. In addition, the presence of a back reflector yields a wide axial ratio bandwidth, enhances the front-to-back ratio of the radiation pattern, and avoids EM interferences between DC biasing lines and the antenna. This proposed antenna can generate three types of polarizations with the conical-beam radiation pattern including vertical polarization, left-handed circular polarization, and right-handed circular polarization by controlling the PIN diodes. Measured impedance and axial ratio bandwidths are 28.6% (3.45 to 4.6 GHz) and 15.4% (3.6 to 4.2 GHz), respectively, for the two CP modes. The maximum CP gain is 4.4 dBic. Furthermore, a dual-band operation (3.35 to 3.44 GHz and 4.5 to 4.75 GHz) can be observed for the LP mode. The antenna can operate at the downlink of standard C band (3.625 to 4.2 GHz) for geostationary satellite communication.
Research Area(s)
- Conical-beam radiation pattern, PIN diodes, polarization reconfigurable antenna, wideband monopolar patch
Citation Format(s)
Polarization reconfigurable wheel-shaped antenna with conical-beam radiation pattern. / Lin, Wei; Wong, Hang.
In: IEEE Transactions on Antennas and Propagation, Vol. 63, No. 2, 02.2015, p. 491-499.
In: IEEE Transactions on Antennas and Propagation, Vol. 63, No. 2, 02.2015, p. 491-499.
Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review