Design, Test and Evaluation of a Pair of Bootlace Lenses

Abstract

This report concerns the development of a microwave lens of the bootlace type for use as a beamformer for linear, phased array antennas. Such devices prove to be a practical implementation of the type of time delay beamformer required in ECCM systems. They constitute hardware which maps from a sampled (elemental antenna) space to beamspace, where beamspace denotes one of the many discrete sets of directional antenna patterns possible, e.g., a Fourier transform of the antenna samples. Successful implementation of a wide angle, wideband lens places strong conditions on impedance match over frequency and scan direction. Further, operation in beamspace implies the existence of a significant number of beam ports and a commensurate number of antenna elements. Keywords: Phased arrays; Beamforming; Bootlace lens; Counter measures; Antenna radiation patterns; Array matching; Antenna apertures; Radiation patterns; Rotman lens; Side lubes.

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Document Details

Document Type
Technical Report
Publication Date
Jul 06, 1988
Accession Number
ADA197817

Entities

People

  • B. D. Wright
  • H. P. Coleman
  • M. G. Parent
  • P. D. Stilwell Jr.

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms

DTIC Thesaurus Topics

  • Antenna Radiation Patterns
  • Antennas
  • Coefficients
  • Directional Antennas
  • Equations
  • Frequency
  • Geometry
  • Linear Arrays
  • Measurement
  • Microwaves
  • Phased Arrays
  • Radiation Patterns
  • Sidelobes
  • Test And Evaluation
  • Transmission Lines
  • Two Dimensional
  • Wide Angles

Fields of Study

  • Engineering

Readers

  • Phased Array Antenna Design.

Technology Areas

  • Space