Title :
Phase contrivance modulated artificial metasurface embedded with rotated slot
Author :
Ranga, Y. ; Matekovits, L. ; Hay, Stuart G. ; Bird, Trevor S.
Author_Institution :
Wireless Network Technol. Lab., CSIRO, Epping, VIC, Australia
Abstract :
The scattering characteristics of a novel type of metasurface consisting of a width modulated microstrip line loaded by a slot are presented. The rotation angle of the slot about the unit cell symmetry center controls the scattering from the unit cell. The proposed design allows efficient control of the reflection phase reducing the design time for holographic surfaces or reflectarrays. Theoretical details and results of the numerical analysis of the reflection phase and of the surface impedance behavior are presented. In particular a unit cell of overall dimensions of 4.5×4.0×1.58 mm exhibits a quasi-constant bandwidth of 2.5 GHz while the resonance is linearly tuned from 9.8 GHz to 11.5 GHz.
Keywords :
UHF antennas; electromagnetic wave reflection; electromagnetic wave scattering; microstrip antenna arrays; microstrip lines; numerical analysis; slot antenna arrays; bandwidth 2.5 GHz; frequency 9.8 GHz to 11.5 GHz; holographic surfaces; phase contrivance modulated artificial metasurface; reflectarrays; reflection phase; resonance; rotated slot; scattering characteristics; scattering control; slot rotation angle; surface impedance; unit cell symmetry center; width modulated microstrip line; Antennas; Impedance; Microstrip; Modulation; Photonic band gap; Surface impedance; Surface waves;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4673-0461-0
DOI :
10.1109/APS.2012.6349406
