VLF-LF Wide Shift FSK Antenna Feed Networks

Abstract

The problem of broadbanding VLF and LF antennas for wide shift FSK modulation has been solved by recourse to static feed networks, which exhibit either two separate passbands centered at the mark and at the space frequency respectively, or a single wide passband extending over the frequency shift. Several configurations of one-port and of two-port networks have been DEVELOPED: these exhibit minimum number of elements, with values that are economically realizable. The new antenna feed networks could be applied to existing antenna installation without excessive modifications.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 1972
Accession Number
AD0746119

Entities

People

  • L. M. Vallese

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Antenna Feeds
  • Antennas
  • Bandpass Filters
  • Bandwidth
  • Capacitance
  • Capacitors
  • Carrier Frequencies
  • Distortion
  • Filters
  • Frequency
  • Frequency Bands
  • Frequency Shift
  • Impedance
  • Inductance
  • Line Spectra
  • Sidebands
  • Spectral Lines

Readers

  • Microwave Engineering.
  • Operations Research
  • Phased Array Antenna Design.

Technology Areas

  • Space