Accession Number:

AD0734812

Title:

Active Filters Applied to Helicopter Noise Reduction.

Descriptive Note:

Research and development technical rept.,

Corporate Author:

ARMY ELECTRONICS COMMAND FORT MONMOUTH N J

Personal Author(s):

Report Date:

1971-07-01

Pagination or Media Count:

26.0

Abstract:

Two active filter resonators of the negative feed-back type are evaluated. Claimed stability in literature and design formulas are verified by an active filter breadboard. Requirements for a passive L-C filter, developed for avionics equipment, were used as design objectives. The desired response was realized using two resonator types. A hybrid version of the active filter was designed and fabricated to establish that microminiaturization was feasible without any degradation in performance. Author

Subject Categories:

  • Electrical and Electronic Equipment
  • Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE