Title :
Design and Characterization of a CPSS-Based Unit-Cell for Circularly Polarized Reflectarray Applications
Author :
Mener, Simon ; Gillard, Raphael ; Sauleau, Ronan ; Cheymol, Cecile ; Potier, Patrick
Author_Institution :
Inst. of Electron. & Telecommun. of Rennes, Eur. Univ. of Brittany, Rennes, France
fDate :
4/1/2013 12:00:00 AM
Abstract :
A CPSS-based unit-cell is proposed as a building block of future reconfigurable dual-CP reflectarrays illuminated by a dual CP primary feed. It is based on an enhanced version of the original Pierrot´s cell with multiple wires bent in a crank-like shape. It provides a 2-bit phase resolution in reflection for the left hand circular polarization (LHCP) and is nearly transparent in right hand circular polarization (RHCP). The main design steps and measurement procedure of the optimized cell are described in detail. The simulated and measured characteristics are in good agreement. The experimental results demonstrate a 6.4% bandwidth for a phase resolution better than 1.9 bits and an insertion loss of 0.5 dB at resonance.
Keywords :
antenna feeds; electromagnetic wave polarisation; reflectarray antennas; resonance; CPSS-based unit-cell; LHCP; Pierrot cell; RHCP; circularly polarized reflectarray application; dual CP primary feed; left hand circular polarization; loss 0.5 dB; optimized cell; phase resolution; reconfigurable dual-CP reflectarray; resonance; right hand circular polarization; word length 2 bit; Metallization; Phase measurement; Polarization; Propagation losses; Reflection; Reflector antennas; Circular polarization selective surface; reflectarray; unit-cell;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2012.2233454
