Accession Number : AD0825785

Title :   8-18 GHZ LOW NOISE TWT AMPLIFIER.

Descriptive Note : Interim technical rept. 1 Jan-15 Sep 67,

Corporate Author : WATKINS-JOHNSON CO PALO ALTO CA

Personal Author(s) : Kinaman, E. W.

Report Date : DEC 1967

Pagination or Media Count : 23

Abstract : The report contains the preliminary results of a program for development of two low noise permanent magnet focussed traveling wave X-K-Band amplifier tubes packaged with integral power supply. The amplifiers are required to provide instantaneous coverage of the band 8 to 18 GHz with 25 db minimum gain, total gain variation under 6 db, noise figure 7.5 db maximum, and output power 5 dbm (min). A helix circuit dispersion has been tailored for gain flatness with circuit voltages between 700 and 1000 volts. An investigation of the cause of excess circuit loss due to 'alligator' skin effect was concluded with visibly smoother coated wire after 'scrunch,' and a 1 to 2 db lower insertion loss at Ku-band. (Author)

Descriptors :   *MICROWAVE AMPLIFIERS), (*TRAVELING WAVE TUBES, SUPERHIGH FREQUENCY, X BAND, K BAND, GAIN, MAGNETS, FOCUSING, PERFORMANCE(ENGINEERING), NOISE(RADIO).

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE