Title :
A low-profile unidirectional antenna enabled by interdigital capacitor loaded metasurface
Author :
Taiwei Yue ; Zhi Hao Jiang ; Werner, Douglas H.
Author_Institution :
Dept. of Electr. Eng., Pennsylvania State Univ., University Park, PA, USA
Abstract :
In this paper, a compact footprint and low-profile metasurface-enabled unidirectional antenna that operates from 4.11GHz to 4.26GHz with a center frequency at 4.2GHz is presented. The miniaturized metasurface, which has a reflection phase of -150 degree at 4.2GHz, was made possible by interdigital capacitor loading, resulting in a unit cell with an electrical dimension of only 0.02λ02. A finite-sized metasurface with two by three elements was integrated with a planar microstrip fed monopole antenna, enabling a total antenna footprint of around 0.13λ02 and a thickness of 0.05λ0. Full-wave simulations show that, even with such a small footprint, the antenna achieves a large front-to-back ratio and a high gain within the targeted operational frequency band.
Keywords :
antenna feeds; capacitors; microstrip antennas; monopole antennas; planar antennas; compact footprint metasurface-enabled unidirectional antenna; finite-sized metasurface; frequency 4.11 GHz to 4.26 GHz; full-wave simulations; interdigital capacitor loaded metasurface; large front-to-back ratio; low-profile metasurface-enabled unidirectional antenna; miniaturized metasurface; planar microstrip fed monopole antenna; targeted operational frequency band; unit cell; Capacitors; Loaded antennas; Microstrip antennas; Surface impedance; Surface waves;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2014 IEEE
Conference_Location :
Memphis, TN
Print_ISBN :
978-1-4799-3538-3
DOI :
10.1109/APS.2014.6904602