Flush Mounted Flour-Arm Spiral With Shallow Backup Cavity,

Abstract

Performance is presented of a four-arm 3.7 inch diameter 2-18 GHz spiral antenna flush mounted on a ground plane containing a shallow recessed backup cavity. The spiral arms are precision etched on a .025 inch fiberglass substrate suspended .150 inch above the bottom of the cavity with a honeycomb spacer, forming a bonded assembly. Both measured and calculated sum and difference patterns, and gain are included. Calculated patterns are obtained, together with currents on the spiral arms, using a wire model Method of Moments simulation.

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1992
Accession Number
ADP007448

Entities

People

  • David Munger
  • Joseph Kobus

Organizations

  • Motorola Mobility

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Antennas
  • Assembly
  • Diameters
  • Fiberglass
  • Method Of Moments
  • Precision
  • Simulations
  • Spiral Antennas
  • Substrates

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Electronics Engineering
  • Fluid Dynamics.