DocumentCode :
2902267
Title :
Design of a CPSS-based reflectarray cell with controllable reflected phase for dual-circularly-polarised reflectarrays
Author :
Mener, S. ; Gillard, R. ; Sauleau, R. ; Cheymol, C. ; Potier, P.
Author_Institution :
IETR, Eur. Univ. of Brittany, Rennes, France
fYear :
2012
fDate :
25-28 June 2012
Firstpage :
1
Lastpage :
4
Abstract :
A first step towards the design of dual-circularly polarised reflectarrays with independent control of both polarisations is proposed in X-band. A reconfigurable unit-cell based on a circularly- polarised selective surface is studied at 8.5 GHz. It provides a 2-bit phase resolution in reflection for the left hand circular polarisation (LHCP) and is nearly transparent in right hand circular polarisation (RHCP). The simulated characteristics are excellent over a 6.4% bandwidth. The proposed unit-cell is fabricated using stacked substrates. A loss budget demonstrates that loss is quite balanced between loss in materials and polarisation conversion. Then, a study of the effect of realistic switches is shown in order to demonstrate that conventional p.i.n. diodes would cause an acceptable loss increase.
Keywords :
microwave antenna arrays; polarisation; reflectarray antennas; semiconductor diodes; 2-bit phase resolution; CPSS-based reflectarray cell; LHCP; RHCP; X-band; circularly-polarised selective surface-based reconfigurable unit-cell; controllable reflected phase; dual-circularly-polarised reflectarrays; frequency 8.5 GHz; left hand circular polarisation; loss budget; pin diodes; polarisation conversion; realistic switches; right hand circular polarisation; stacked substrates; Antennas; Dielectric losses; Europe; Materials; Propagation losses; Reflection; Resistance; Circular polarisation selective surface; Reflectarray; Unit-cell;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antenna Technology and Applied Electromagnetics (ANTEM), 2012 15th International Symposium on
Conference_Location :
Toulouse
Print_ISBN :
978-1-4673-0290-6
Type :
conf
DOI :
10.1109/ANTEM.2012.6262331
Filename :
6262331
Link To Document :
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