Tunable plasma frequency devices
First Claim
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1. A reduced noise and selectively configurable plasma device for interpreting electromagnetic signals having operating frequencies, the device comprising:
- plasma means having a plasma that is ionizable to a plasma frequency;
ionizing means for ionizing the plasma;
control means connected to the ionizing means to control the ionizing means to ionize the plasma to the plasma frequency by application of plasma ionizing energy pulses; and
interpreting means operative to interpret the electromagnetic signals only during periods between ionization of the plasma with the energy pulses so that interpretation of the electromagnetic signals occurs only during afterglow periods for the plasma and thereby reducing noise.
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Abstract
A reduced noise and selectively configurable plasma device is capable of interpreting electromagnetic signals having an operating frequency and has a plasma mechanism with a plasma that is ionizable to a plasma frequency. An ionizing mechanism for ionizing the plasma and a control that is operative to control the ionizing mechanism, ionize the plasma to the plasma frequency by application of plasma ionizing energy pulses. An interpreting mechanism operates to interpret the electromagnetic signals only in a period between ionization of the plasma with the energy pulses.
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Citations
24 Claims
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1. A reduced noise and selectively configurable plasma device for interpreting electromagnetic signals having operating frequencies, the device comprising:
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plasma means having a plasma that is ionizable to a plasma frequency; ionizing means for ionizing the plasma; control means connected to the ionizing means to control the ionizing means to ionize the plasma to the plasma frequency by application of plasma ionizing energy pulses; and interpreting means operative to interpret the electromagnetic signals only during periods between ionization of the plasma with the energy pulses so that interpretation of the electromagnetic signals occurs only during afterglow periods for the plasma and thereby reducing noise. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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- 22. A method for operating a plasma device having a plasma ionizable at a plasma frequency, the plasma device having a plasma at least partially surrounding an internal source of electromagnetic waves for transmitting, receiving, or reflecting a source operating signal having an operating frequency which can be changed with respect to the plasma frequency, or a plasma frequency which can be changed with respect to the operating frequency such that an electromagnetic resonance cavity is created by varying a plasma frequency with respect to the source operating frequency or by varying the operating frequency with respect to the plasma frequency, wherein the plasma is ionized to a plasma frequency by pulsing with plasma ionizing energy pulses, and wherein the source operating signal is transmitted, received, or reflected only during an afterglow period between the energy pulses.
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