Structurally simple apparatus for generating a microwave frequen

Details Structurally simple apparatus for generating a microwave frequen Structurally simple apparatus for generating a microwave frequen

1997-12-04

1999-03-16

Leung, Philip H.

Electric heating

Microwave heating

With specific generator

315 511, 315 537, 315 3963, 313299, 331184, H05B 664, H01J 2502

Patent

active

058833692

ABSTRACT:
An apparatus for generating a microwave frequency energy includes a cathode for emitting electrons, a first grid for controlling and focusing the flow of electrons from the cathode, a choke structure for serving as a capacitor, wherein the cathode, the first grid and the choke structure define an input cavity functioning as a resonant circuit. The apparatus further includes a trimming resistor, one end of which is connected to the first grid and the other end thereof is connected the cathode, for inducing a bias voltage on the first grid, a second grid provided above the first grid and having a plurality of slots through which the electron beams passing through the slots of the first grid pass, an anode for receiving the electrons passing through the slots of the second grid, a driving voltage source for providing a driving voltage to the cathode and the anode, an antenna for extracting the microwave from an output cavity, the output cavity being defined by the second grid and the anode , and a feedback structure extending from the input cavity to the output cavity, for feeding a portion of the microwave frequency energy back to the input cavity.

REFERENCES:
patent: 2529668 (1950-11-01), Wang
patent: 3805111 (1974-04-01), Ryabinin et al.
patent: 5233269 (1993-08-01), Lien
patent: 5541391 (1996-07-01), Seong

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