PT Journal
AU Boreman, GD
TI Infrared microantennas
SO SPIE
JI SPIE
PY 1997
BP 882
EP 885
VL 3110
DE optical antennas
AB We present results of mesurments of the polarization response of asymetric spiral antennas coupled Ni-NiO-Ni diodes, over the wavelength range 10.2 to 10.7 μm. The feed structure of the antenna imposes an elliptical polarization singature that is different from the circular polarization expected from a symmetric spiral. We develop a lossy-transmission-line model yielding the measured polarization response. A combination of a balanced and an unbalanced mode is required. Reflected current waves from the arm ends are significant.
ER