A variable phase-shifting system, able to generate phase-shifted replicas of the same reference input signal, has been designed to properly feed the antenna system within a plasma device. The system is based on a phase-locked loop used as a voltage controlled phase shifter and is able to provide four phase-shifted output signals. The phase differences between adjacent outputs can be varied between 0° and 100°, and are maintained equal to each other, with a precision of less than 3° in the range 2.5-10 MHz. © 1995 American Institute of Physics.
Ferrucci, L., Casanova, M., Maglione, V., Montiron, G., Riccardi, C., Barisoni, D., et al. (1995). Radio frequency phase shifters for launching waves in magnetized plasma. REVIEW OF SCIENTIFIC INSTRUMENTS, 66(4), 2888-2891 [10.1063/1.1145573].
Radio frequency phase shifters for launching waves in magnetized plasma
RICCARDI, CLAUDIA;FONTANESI, MARCELLO;GALASSI, ALESSANDRO;SINDONI, ELIO
1995
Abstract
A variable phase-shifting system, able to generate phase-shifted replicas of the same reference input signal, has been designed to properly feed the antenna system within a plasma device. The system is based on a phase-locked loop used as a voltage controlled phase shifter and is able to provide four phase-shifted output signals. The phase differences between adjacent outputs can be varied between 0° and 100°, and are maintained equal to each other, with a precision of less than 3° in the range 2.5-10 MHz. © 1995 American Institute of Physics.
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