Frequency selective surface using nested split ring slot elements as a lens with mechanically reconfigurable beam steering capability
Data(s) |
01/10/2010
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Resumo |
The design is described of a double layer frequency selective surface which can produce a differential phase shift of 180 ° as the wave propagates through it at normal incidence. The hand of an applied circularly polarized signal is reversed due to the 180° phase shift, and it is demonstrated that the exit circularly polarized output signal can be phase advanced or phase retarded by 180 ° upon rotation of the elements comprising the structure. This feature allows the surface to act as a spatial phase shifter. In this paper the beam steering capabilities of a 10 × 10 array of such elements are demonstrated. Here the individual elements comprising the array are rotated relative to each other in order to generate a progressive phase shift. At normal incidence the 3 dB Axial Ratio Bandwidth for LHCP to RHCP conversion is 5.3% and the insertion loss was found to be -2.3 dB, with minimum axial ratio of 0.05 dB. This array is shown to be able to steer a beam from -40 ° to +40 ° while holding axial ratio at the pointing angle to below 4 dB. The measured radiation patterns match the theoretical calculation and full-wave simulation results. © 2010 IEEE. |
Identificador | |
Idioma(s) |
eng |
Direitos |
info:eu-repo/semantics/restrictedAccess |
Fonte |
Fusco , V & Euler , M 2010 , ' Frequency selective surface using nested split ring slot elements as a lens with mechanically reconfigurable beam steering capability ' IEEE Transactions on Antennas and Propagation , vol 58 , no. 10 , 5498944 , pp. 3417-3421 . DOI: 10.1109/TAP.2010.2055814 |
Palavras-Chave | #/dk/atira/pure/subjectarea/asjc/2200/2208 #Electrical and Electronic Engineering #/dk/atira/pure/subjectarea/asjc/3100/3104 #Condensed Matter Physics |
Tipo |
article |