A Summary of Methods for Producing Nulls in an Antenna Radiation Pattern

Abstract

The report presents a brief introductory description of adaptive nulling antenna systems and their essential components, with particular emphasis on satellite communications applications. The principal difference between the inherent performance of array and multiple-beam antennas is discussed. Bandwidth, nulling performance versus degrees of freedom, commonly used circuits, etc. are also discussed. It is pointed out that the algorithm for determining the method for combining the received signals at each of the antenna's N terminals is a most important and central issue in any system. Several algorithms are discussed and their relationship to the general least mean square (power inversion) algorithm is pointed out. Finally a new method for evaluating the performance of nulling antennas is described.

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Document Details

Document Type
Technical Report
Publication Date
Sep 02, 1976
Accession Number
ADA032340

Entities

People

  • Leon J. Ricardi

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Algorithms
  • Antenna Radiation Patterns
  • Antennas
  • Artificial Satellites
  • Bandwidth
  • Beam Steering
  • Communication Satellites
  • Communication Systems
  • Delay Lines
  • Figure Of Merit
  • Frequency
  • Frequency Agility
  • Frequency Bands
  • Multiple Beam Antennas
  • Radiation Patterns
  • Satellite Communications
  • Steady State

Fields of Study

  • Engineering

Readers

  • Business Analytics
  • Phased Array Antenna Design.

Technology Areas

  • Space