Green Bank Telescope 290 to 395 MHz Feed Analysis and Modification for Operation in the 140 to 175 MHz Band

Abstract

A previously developed 290 to 395 MHz short backfire antenna feed for the Green Bank Telescope (GBT) has been modified for operation in the 140 to 175 MHz VHF band. The feed has been modeled with the Electromagnetic Surface Patch code, Version 5 (ESP5) software, developed at Ohio State University (OSU) to predict the feed radiation patterns and with OSU SatCom Workbench software to predict the GBT radiation patterns. Measured feed radiation patterns are in good agreement with the electromagnetic model. This lower-frequency VHF feed is suitable for use as a receive antenna for the GBT.

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Document Details

Document Type
Technical Report
Publication Date
Dec 17, 2003
Accession Number
ADA419343

Entities

People

  • Alan J. Fenn
  • Sivasankaran Srikanth

Organizations

  • Massachusetts Institute of Technology

Tags

DTIC Thesaurus Topics

  • Abstracts
  • Agreements
  • Antenna Feeds
  • Antenna Radiation Patterns
  • Antennas
  • Backfire Antennas
  • Bandwidth
  • Computer Simulations
  • Dipole Antennas
  • Frequency
  • Frequency Bands
  • Observatories
  • Radiation
  • Radiation Patterns
  • Reflectors
  • Telescopes
  • Very High Frequency

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Phased Array Antenna Design.

Technology Areas

  • Space
  • Space - Satellites