Title :
Mixer and beamforming advances in millimeter-wave imaging
Author :
Qi Jiang ; Danqing Fu ; Fengqi Hu ; Meijiao Li ; Domier, Calvin W. ; Xiaoguang Liu ; Luhmann, Neville C.
Author_Institution :
Univ. of California, Davis, Davis, CA, USA
Abstract :
Summary form only given. Millimeter-wave imaging diagnostics have been developed in the 50~150 GHz region which provide 2D localized measurements of electron temperature and electron density fluctuations inside magnetic fusion plasma devices. New mixer and antenna geometries are being developed to extend these techniques to THz frequencies. Also under investigation are beam shaping techniques which offer the possibility of matching the illumination and receive beams in real time to density profile changes as the plasma evolves.
Keywords :
array signal processing; density measurement; millimetre wave antennas; millimetre wave imaging; millimetre wave mixers; plasma density; plasma devices; temperature measurement; 2D localized measurement; antenna geometry; beam shaping technique; beamforming; electron density fluctuation; electron temperature measurement; frequency 50 GHz to 150 GHz; magnetic fusion plasma device; matching illumination; millimeter-wave imaging diagnostics; mixer; plasma evolve; Dipole antennas; Imaging; Mixers; Particle beams; Plasmas; Radio frequency; Schottky diodes;
Conference_Titel :
Infrared, Millimeter, and Terahertz waves (IRMMW-THz), 2014 39th International Conference on
Conference_Location :
Tucson, AZ
DOI :
10.1109/IRMMW-THz.2014.6956434
