期刊
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION
卷 67, 期 5, 页码 3427-3432出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TAP.2019.2901132
关键词
Glass dielectric resonator antenna (DRA); liquid metal; polarization reconfiguration; polarizer
资金
- UK Engineering and Physical Sciences Research Council (EPSRC) [EP/P008402/1]
- EPSRC [EP/P008402/2, EP/P008402/1] Funding Source: UKRI
In this communication, we introduce a glass dielectric resonator antenna (DRA) incorporating a liquid-metal polarizer capable of polarization reconfiguration. The polarizer is formed by a type of liquid-metal alloy composed of gallium, indium, and tin. The antenna is capable of generating three different polarizations: a -45 degrees polarization (STATE 1), a +45 degrees polarization (STATE 2), and a y-axis polarization (STATE 3). The glass DRA is designed to operate at 2.4 GHz with a wide effective bandwidth (overlapped impedance bandwidths of the three states) of 18.0% and a high radiation efficiency of more than 80%. The experimental results agree well with the theoretical analyses.
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