Accession Number:

AD0762517

Title:

Tactical Multi-Tuned Preselector.

Descriptive Note:

Final technical rept. 20 Sep 71-20 Dec 72,

Corporate Author:

WATKINS-JOHNSON CO PALO ALTO CALIF

Personal Author(s):

Report Date:

1973-04-01

Pagination or Media Count:

152.0

Abstract:

A study was made primarily of nonreciprocal YIG filter preselectors for the purpose of providing a suitable front-end for frequency-selective communications receivers. It was shown that fixed-tuned miniaturized nonreciprocal YIG preselectors can be arranged in a YIG filter bank multi-channel configuration with narrow bandwidths, low insertion loss, high directivity, nanosecond switching, and frequency-hopping rates in the MHz range. Accurate mathematical models were developed for analyzing the YIG preselector and these were utilized in a computer design program for the reciprocal and tri-loop filter configurations. Feasibility of achieving bandwidths within the 0.1 to 50 MHz range with low insertion loss was demonstrated. Modified author abstract

Subject Categories:

  • Electrical and Electronic Equipment
  • Radio Communications

Distribution Statement:

APPROVED FOR PUBLIC RELEASE