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Title: Method and device for generating microwaves using a split cavity modulator

Patent Application ·
OSTI ID:7280576

This invention consists of a compact device called the split cavity modulator whose self-generated oscillating electromagnetic field converts a steady particle beam into a modulated particle beam. The particle beam experiences both signs of the oscillating electric field during the transit through the split cavity modulator. The modulated particle beam can then be used to generate microwaves as that frequency and through a series of sequential extractors, high efficiency extraction of microwave power is enabled. The modulated beam and the microwave frequency can be varied by the placement of resistive wires at nodes of oscillation within the cavity. The short beam travel length through the cavity permit higher currents because both space charge and pinching limitations are reduced. The need for an applied magnetic field to control the beam has been eliminated.

Research Organization:
Sandia National Labs., Albuquerque, NM (United States)
Sponsoring Organization:
USDOE; USDOE, Washington, DC (United States)
DOE Contract Number:
AC04-76DP00789
Assignee:
Dept. of Energy
Patent Number(s):
PATENTS-US-A7540828
Application Number:
ON: DE92017196; PPN: US 7-540828
OSTI ID:
7280576
Resource Relation:
Patent File Date: 8 Jun 1990
Country of Publication:
United States
Language:
English