A PHASE-LOCKED RECEIVING ARRAY FOR HIGH-FREQUENCY COMMUNICATIONS USE

Abstract

An H.F. receiving array using I.F. combination and automatic phasing through phase-locked loops is discussed. The effects of an interfering signal on automatic phasing and on the over-all array performance are considered. An experimental array is described and results of measurement on the array are given. The array uses separate R.F. amplifiers for each element. The signals from each element are combined at an intermediate frequency. It was shown that this type of array corrects for essentially all phase errors between the distant transmitter and the point where the received signals are combined. This includes errors due to the propagation path, array element motion, near field obstructions, and instabilities in electronic equipment and R.F. cables. The array also corrects for phase shifts due to changes in angle of arrival, thus giving it the highly desirable property of automatically tracking a desired signal.

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Document Details

Document Type
Technical Report
Publication Date
Aug 15, 1963
Accession Number
AD0464374

Entities

People

  • Dean E. Svoboda

Organizations

  • Ohio State University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Arrays
  • Bandwidth
  • Capacitors
  • Cathode Followers
  • Electronic Equipment
  • Gain
  • Government Procurement
  • Linear Arrays
  • Local Oscillators
  • Low Pass Filters
  • Modulation
  • Near Field
  • Networks
  • Oscillators
  • Phase Detectors
  • Phase Modulation
  • Resistors

Fields of Study

  • Engineering

Readers

  • Control Systems Engineering.
  • Phased Array Antenna Design.

Technology Areas

  • Microelectronics