TY - JOUR
T1 - Experimental validation of all-dielectric mm-wave polarization conversion based on form birefringence
AU - Lorente Crespo, María
AU - Ballesteros-Garcia, Guillem
AU - Goussetis, George
AU - Mateo-Segura, Carolina
N1 - The authors would like to acknowledge the funding support
by FP7 project DORADA (IAPP-2013-610691) and by
EPSRC (EP/L015110/1), and to thank Taconic Advanced
Dielectric Division for providing the dielectric material.
PY - 2016/9/21
Y1 - 2016/9/21
N2 - In this contribution, a mm-wave all-dielectric linearto-circular polarization converter is reported for the first time. The proposed converter consists of a periodic stack of isotropic dielectric substrates that produces form birefringence. By virtue of the anisotropy of the permittivity tensor, the phase-shift introduced between two orthogonally linearly polarized transmitted electromagnetic waves can be controlled, enabling linear to circular polarization conversion. Due to its all-dielectric nature, the proposed polarization converter circumvents oxidation, corrosion and power handling problems associated with metallic structures. Our measurements demonstrate 17% 1dB axial ratio fractional bandwidth and 39% below 3dB, while measured insertion loss is 0.6dB at the operating frequency. The proposed polarization converter further benefits from angularly stable response up to 40 degrees.
AB - In this contribution, a mm-wave all-dielectric linearto-circular polarization converter is reported for the first time. The proposed converter consists of a periodic stack of isotropic dielectric substrates that produces form birefringence. By virtue of the anisotropy of the permittivity tensor, the phase-shift introduced between two orthogonally linearly polarized transmitted electromagnetic waves can be controlled, enabling linear to circular polarization conversion. Due to its all-dielectric nature, the proposed polarization converter circumvents oxidation, corrosion and power handling problems associated with metallic structures. Our measurements demonstrate 17% 1dB axial ratio fractional bandwidth and 39% below 3dB, while measured insertion loss is 0.6dB at the operating frequency. The proposed polarization converter further benefits from angularly stable response up to 40 degrees.
U2 - 10.1109/LMWC.2016.2605454
DO - 10.1109/LMWC.2016.2605454
M3 - Article
SN - 1531-1309
VL - 26
JO - IEEE Microwave and Wireless Components Letters
JF - IEEE Microwave and Wireless Components Letters
IS - 10
M1 - 7572992
ER -