Accession Number:

ADA002845

Title:

High Efficiency Dual Mode Octave Bandwidth Traveling Wave Tube.

Descriptive Note:

Interim technical rept. Jan-Jun 74,

Corporate Author:

HUGHES AIRCRAFT CO TORRANCE CALIF ELECTRON DYNAMICS DIV

Personal Author(s):

• Manoly,Arthur E.
• Scherba,Mark K.

Report Date:

1974-11-01

Pagination or Media Count:

27.0

Abstract:

Techniques resulting in high overall efficiency over extended bandwidths have been considered in this study effort. The study was complicated by both the high average power requirement and the 10 dB pulse up dual mode capability plus PPM focusing. Experimental cold testing dealing with helices of different pitch was performed. Suitable shaping methods resulted in high interaction impedances with small phase velocity variations over octave bandwidths. Large signal computer evaluations considering beam-circuit wave velocity resynchronization schemes were conducted. An existing experimental dual mode electron gun was scaled and structurally adapted for PPM focusing. A satisfactory match was designed and demonstrated for both input and output transducers.

Descriptors:

• *TRAVELING WAVE TUBES
• HIGH POWER
• DUAL MODE
• ELECTRON GUNS
• HELIXES

Subject Categories:

• Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE