Accession Number:

AD0257825

Title:

THE LARMOTRON. A DC PUMPED QUADRUPOLE AMPLIFIER

Descriptive Note:

Corporate Author:

S F D LABS INC UNION N J

Personal Author(s):

Report Date:

1961-06-01

Pagination or Media Count:

1.0

Abstract:

A two-phase theoretical and experimental investigation of the Larmotron microwave amplifier is described. The Larmotron is a dc pumped quadrupole amplifier which uses transverse deflection RF couplers. The first phase is concerned with the realization of a Larmotron amplifier at an operating frequency of 70 kMc. The objective is to achieve a CW power output of 10 watts over a 5 bandwidth. The results of cold test design work on the RF couplers are described and experimental data given. The coupler uses a slow-wave circuit called the spiral-staircase structure which has been developed for use with the Larmotron amplifier. Two new electron guns are being built for use with this tube. Pertinent problems of beam control are discussed. Phase II is concerned with an investigation of the noise reduction mechanisms inherent in the Larmotron. The object is the design of a low noise amplifier in the X-band frequency range. A theoretical analysis is given of the unique requirements on the coupler, if it is to be used with dc pumped quadrupole structures, to produce a low noise amplifier. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE