Accession Number:

AD0684733

Title:

SPECTRAL DISTORTION OF NOTCH FILTERED FM SIGNALS IN SATURATED AMPLIFIERS.

Descriptive Note:

Technical rept.,

Corporate Author:

STANFORD UNIV CALIF STANFORD ELECTRONICS LABS

Personal Author(s):

Report Date:

1969-01-01

Pagination or Media Count:

40.0

Abstract:

In certain applications, a narrowband spectral notch may be desired in the output spectrum produced by a wide band interference system. Unfortunately, nonlinear effects in saturating power amplifiers can severely degrade a spectral notch applied at the amplifier input. Theoretical and experimental studies of this phenomenon are presented for notch filtered FM signals. The experiments used a TWT amplifier, and the measured results are presented graphically. The TWT input was an FM signal followed by a notch filter. In specific situations of interest, a perfect notch at the TWT input degrades to a 6-dB notch at the output. This and other results are presented and shown to agree well with theoretical predictions. Author

Subject Categories:

  • Electrical and Electronic Equipment
  • Countermeasures

Distribution Statement:

APPROVED FOR PUBLIC RELEASE