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

Volume

1

fYear

1997

fDate

6-10 Oct 1997

Firstpage

413

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Fusion Engineering, 1997. 17th IEEE/NPSS Symposium

Conference_Location

San Diego, CA

Print_ISBN

0-7803-4226-7

Type

conf

DOI

10.1109/FUSION.1997.687067

Filename

687067