Accession Number : ADA304793

Title :   Initial Operation of a High Power, Frequency-Doubling X-Band Magnicon Amplifier.

Descriptive Note : Interim rept.,

Corporate Author : NAVAL RESEARCH LAB WASHINGTON DC RADIATION AND PARTICLE BEAM GENERATION SECTI ON

Personal Author(s) : Gold, S. H. ; Fliflet, A. W. ; Manheimer, W. M. ; Kinkead, A. K. ; Hafizi, B.

PDF Url : ADA304793

Report Date : 18 JAN 1996

Pagination or Media Count : 34

Abstract : This paper reports the initial high power operation of a frequency doubling magnicon amplifier at 11.120 GHz. The deflection cavities operate at 5.560 GHz. The device is operating in a single pulse mode at 650 kV and 225 A, using a 5.5 -mm-diam. beam from a plasma cathode, at a magnetic field of 6.7-8.2 kG. In order to overcome a gain saturation problem in the deflection cavities caused by plasma loading, the penultimate deflection cavity is operated very close to self oscillation. The typical output pulse length is 100 nsec FWHM, and is limited by rf breakdown of the penultimate cavity. Based on the measured far field antenna pattern and absolute calibration of all microwave components, the measured output power is 14 MW (+/- dB), corresponding to an efficiency of approx. 10%.

Descriptors :   *MICROWAVE AMPLIFIERS, HIGH POWER, MAGNETIC FIELDS, SECOND HARMONIC GENERATION, DEFLECTION, PULSE GENERATORS, FAR FIELD, SATURATION, CATHODES, BEAM FORMING, GAIN, CALIBRATION, PLASMA DEVICES, X BAND, RADIATION PATTERNS, CAVITY RESONATORS, MICROWAVE OSCILLATORS.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE