Accession Number:

AD0608656

Title:

DEVELOPMENT OF TWO X-BAND VARIABLE GAIN TWTS (ONE LOW LEVEL AND ONE MEDIUM LEVEL).

Descriptive Note:

Interim development rept. no. 1, 1 Jul-30 Sep 64.

Corporate Author:

MICROWAVE ELECTRONICS PALO ALTO CALIF

Personal Author(s):

Report Date:

1964-11-01

Pagination or Media Count:

38.0

Abstract:

The general behaviour of the TWT gain with varying helix voltage is discussed. Gain change is frequency sensitive due to b-parameter variation. Traveling-wave tubes in X- and S-bands were tested. Gain in both tubes changed more at the high than at the low frequency end of the band. Effects of helix-voltage change on both noise figure and saturated power output was measured and related to theory. It was decided that the best approach to the problem would be a four-helix structure. The input helix is used to establish noise figure, the output helix to generate gain, and the intermediate helices for gain control. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE