Field emission devices
AssigneeGeneral Electric Company
InventorsNeil A. Cade, David F. Howell
Life of this patent
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Abstract
A klystron device comprises an array of cold-cathode field emission elements arranged to form a distributed amplifier which further comprises a modulation strip line and a catcher strip line. A collector electrode is spaced from the catcher strip line. The device may include a deflector for returning electrons emitted by the elements back to the modulation strip line so that the device acts as an oscillator.
Claims17
A distributed amplifer device, comprising an array of field emitter cathode bodies on a substrate;
- a grid structure comprising a plurality of grid electrodes formed over, and insulated from, the cathode bodies and from each other;
- a modulation microstrip line attached to the grid structure and spaced from the grid electrodes;
- spacer means attached to the modulation line and forming an electron drift space therein;
- and a catcher microstrip line attached to the spacer means.
The klystron distributed amplifier device, comprising an array of cold-cathode elements for emitting electrons by field emission;
- a modulation strip line spaced from said array for modulating the emitted electrons in response to an input modulation signal fed to said modulation strip line;
- and a catcher strip line spaced from the modulation strip line to provide an amplified output signal.
A klystron oscillator device, comprising an array of cold-cathode elements for emitting electrons by field emission;
- a modulation strip line spaced from the array for modulating the emitted electrons;
- and deflector means for returning electrons emitted by said array to the modulation strip line to cause oscillation of the device.
Dependencies are inferred from the claim text.