Title :
Lens-coupled imaging arrays for the millimeter- and submillimeter-wave regions
Author :
Uehara, Kazuhiro ; Miyashita, Kazuhito ; Natsume, Ken-Ichiro ; Hatakeyama, Kouki ; Mizuno, Koji
Author_Institution :
Res. Inst. of Electr. Commun., Tohoku Univ., Sendai, Japan
fDate :
5/1/1992 12:00:00 AM
Abstract :
The authors have been developing four kinds of lens-coupled antenna imaging arrays for operation at millimeter- and submillimeter-wave frequencies. Dipole antennas, Yagi-Uda trap-loaded antennas, and microstrip patches are compared from the viewpoint of matching with detectors and optical systems. The radiation patterns and input impedance of each antenna have been calculated and measured to attain the optimum matching using model experiments. The trap-loaded antenna arrays have been successfully applied to plasma diagnostics at the Tsukuba GAMMA 10 tandem mirror
Keywords :
antenna radiation patterns; antennas in plasma; dipole antennas; electric impedance; impedance matching; lens antennas; magnetic mirrors; microstrip antennas; microwave antenna arrays; microwave imaging; plasma diagnostic techniques; submillimetre wave devices; MM-wave type; Tsukuba GAMMA 10 tandem mirror; Yagi-Uda trap-loaded antennas; imaging arrays; input impedance; lens-coupled antenna; microstrip patches; millimetre-wave region; optimum matching; plasma diagnostics; radiation patterns; submillimeter-wave regions; Antenna arrays; Antenna radiation patterns; Charge carrier processes; Dipole antennas; Frequency; Impedance; Microstrip antenna arrays; Microstrip antennas; Optical detectors; Optical imaging;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
