Title :
System for tunerless operation of a four-element phased array antenna for fast wave current drive
Author :
Pinsker, R.I. ; Baity, F.W. ; Cary, W.P. ; Petty, C.C. ; Callis, R.W. ; deGrassie, J.S. ; Martin, W.C.
Author_Institution :
Gen. Atomics, San Diego, CA, USA
Abstract :
A simple transmission line configuration for powering a four-element phased antenna array is described. This system, called the balanced feed configuration (BFC) is suitable for co- or counter-fast wave current drive (FWCD) applications. It has the property of presenting a constant matched load to the transmitter despite wide variations in the antenna load impedance without the use of variable tuning elements. This system has been implemented on a 2 MW 60 MHz FWCD antenna on the DIII-D tokamak
Keywords :
antenna phased arrays; antennas in plasma; fusion reactor design; fusion reactor operation; plasma radiofrequency heating; plasma toroidal confinement; 2 MW; 60 MHz; DIII-D tokamak; antenna load impedance; balanced feed configuration; constant matched load; fast wave current drive; four-element phased array antenna; fusion reactors; transmission line configuration; tunerless operation; variable tuning elements; Antenna arrays; Feeds; Impedance; Loaded antennas; Phased arrays; Power transmission lines; Transmission line antennas; Transmitters; Transmitting antennas; Tuners;
Conference_Titel :
Fusion Engineering, 1997. 17th IEEE/NPSS Symposium
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-4226-7
DOI :
10.1109/FUSION.1997.687067
