IMPROVED PHASE MODULATOR-DEMODULATOR

Abstract

Effort was continued towards the design of a modulator-demodulator. The logic, circuit, and mechanical designs of the units are covered in detail. The problem of obtaining a good method of generating and detecting a syne bit resulted in a considerable amount of logic and circuit redesign. It is felt that this method, which uses a phase shift in the center of a bit, is the best and simplest method to use in a unit of this small physical size. Additional design work was done on some of the circuits. The basic circuits to be used are still in doubt.

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Document Details

Document Type
Technical Report
Publication Date
Nov 30, 1961
Accession Number
AD0274054

Entities

People

  • Margaret George

Organizations

  • International Business Machines Corporation (Armonk, NY)

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplifiers
  • Circuits
  • Contracts
  • Converters
  • Demodulators
  • Electronic Equipment
  • Engineering
  • Frequency
  • Modulation
  • Modulators
  • New Jersey
  • Personality
  • Phase Modulators
  • Power Supplies
  • Telephone Lines
  • Transmitters
  • Tuned Circuits

Fields of Study

  • Physics

Readers

  • Computer Engineering
  • Software Engineering
  • Theoretical Analysis.