A SPECTRUM ANALYZER USING DIGITAL STORAGE.

Abstract

A spectrum analyzer was built with 256 separate filters using a core storage scanned at a 7 millisecond rate. The most useful feature of the digital spectrum analyzer is that the system clock frequency determines the resonant frequencies of the 256 individual filters. Analysis of the digital integrator, first order lag, and second-order filter shows that the center frequency Wn is l/2 T sub D x square root of (A) and Q is square root of (A)/Z(A-2/3. T sub D is the time period at which a particular filter is sampled (also the time constant of the digital integrator) and (a) is the feedback factor in the digital first-order lag.

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1963
Accession Number
AD0600216

Entities

People

  • David C. Freeman
  • Herbert E. Miller

Tags

DTIC Thesaurus Topics

  • Analyzers
  • Core Storage
  • Feedback
  • Frequency
  • Integrators
  • Resonant Frequency
  • Spectra
  • Spectrum Analyzers
  • Square Roots

Fields of Study

  • Physics

Readers

  • Approximation Theory.
  • Electrical Engineering