Accession Number : AD0812873

Title :   DEVELOPMENT OF A 2.0 TO 8.0 GHZ LOW NOISE PERMANENT-MAGNET TRAVELING-WAVE AMPLIFIER WITH INTEGRAL POWER SUPPLY.

Descriptive Note : Final rept., Jan 64-Sep 66,

Corporate Author : WATKINS-JOHNSON CO PALO ALTO CA

Personal Author(s) : Frost, R. D. ; Mauch, F. T.

Report Date : JAN 1967

Pagination or Media Count : 52

Abstract : This is the final report for a program in which two very low-noise traveling-wave amplifiers covering the frequency range from 2.0 to 8.0 GHz have been developed. The amplifiers are focused by permanent magnet and are packaged with an integral power supply. Hence, by simply plugging the device into 115 volt, 60 Hz source one obtains a small signal amplification of 28 plus or minus 3dB with a noise figure less than 6 dB and a minimum saturated power output of 6.7 dBm or more over the entire double octave frequency range. The principal design techniques used in attaining this new ultra broadband amplifier include: a hollow beam low-noise gun having broadband characteristics; a straight field permanent magnet focusing arrangement; a severed helix where the input half is designed to minimize noise figure and the output half is designed to maximize power output while the combination is designed to minimize gain variation. The development of this ultra-broadband low-noise amplifier leads the way for development of similar amplifiers covering 0.5 to 2 GHz and 8 to 18 GHz. When these have been developed it will be possible to design wideband receivers and spectrum analyzers which are about half as complicated as present designs in the RF section. (Author)

Descriptors :   (*TRAVELING WAVE TUBES, MICROWAVE AMPLIFIERS), POWER SUPPLIES, NOISE(RADIO), FREQUENCY, PROPAGATION, HELIXES, GAIN, VELOCITY, ELECTRON GUNS, COUPLING CIRCUITS, MAGNETS, MAGNETIC FIELDS, SUPERHIGH FREQUENCY.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE