Standing wave plasma antenna with plasma reflector

Details Standing wave plasma antenna with plasma reflector Standing wave plasma antenna with plasma reflector

1999-05-21

2000-04-04

Wong, Don

Communications: radio wave antennas

Antennas

Antenna with parasitic reflector

343701, H01Q 1910, H01Q 126

Patent

active

060467053

ABSTRACT:
A standing wave plasma antenna is provided. An ionizer generates an ioniz beam in a bounded plasma column extending along a vertical axis. A modulating signal is applied to an electro-optical crystal that modulates the ionizing beam. The resulting changes in the ionizing beam produce gradients in the plasma that cause ions and electrons to oscillate in a vertical path that generates alternating current having the frequency of the modulator. At a remote end the antenna terminates in a reflector. The reflector includes a chamber having a plasma with a charged particle density that is greater than the charged particle density in the plasma. The generated currents are therefore reflected as in a standing wave antenna. These currents generate an amplitude-, phase- or frequency-modulated electromagnetic field that radiates from the plasma column.

REFERENCES:
patent: 5963169 (1999-10-01), Anderson et al.
patent: 5990837 (1999-11-01), Norris et al.

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