Title:
MICROWAVE OSCILLATOR
Document Type and Number:
Japanese Patent JPH03229475
Kind Code:
A
Abstract:
PURPOSE: To form a dielectric Cherenkov maser(DCM) having a small size and low power consumption by disposing a superconductor around a dielectric.
CONSTITUTION: In a microwave oscillator having a cavity 4 for passing a relativistic electron beam and a dielectric 3 disposed around the cavity, a superconductor 5 is disposed around the dielectric to form the oscillator. The superconductor has a large energy gap. The superconductor is formed of yttrium (or other lanthanoid element)-barium-copper-oxygen, mainly of bismuth-strontium-calcium- copper-oxygen, mainly of tharium-barium-calcium-copper-oxygen or lanthanum- alkali earth metal-copper-oxygen.
Inventors:
TAKEMURA YASUHIKO
Application Number:
JP2552790A
Publication Date:
October 11, 1991
Filing Date:
February 05, 1990
Export Citation:
Assignee:
SEMICONDUCTOR ENERGY LAB
International Classes:
H01J25/00; H01S1/02; H01S3/30; (IPC1-7): H01J25/00; H01S1/02; H01S3/30