Test and Evaluation of a Prototype Very High Frequency (VHF) Low-Intermodulation Amplifier.

Abstract

The report describes the test and evaluation of a prototype very high frequency (VHF) low-intermodulation amplifier that was designed as a frequency-independent interference rejection circuit for the T-1108/GRT-21 air/ground communication transmitter. Test results showed the amplifier could reduce T-1108/GRT-21 transmitter third-order intermodulation products at least 48 dB when aligned for a single interfering frequency condition, but the amplifier did not achieve the desired 15-dB intermodulation reduction when aligned for broadband interference cancellation across the 118-136 MHz VHF air/ground communication frequency band.

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1976
Accession Number
ADA029848

Entities

People

  • James J. Coyle

Tags

DTIC Thesaurus Topics

  • Amplifiers
  • Bandwidth
  • Broadband
  • Frequency
  • Frequency Bands
  • Intermodulation
  • Prototypes
  • Radio Frequency
  • Test And Evaluation
  • Transmitters
  • Very High Frequency

Readers

  • Aerospace Test and Evaluation
  • Microwave Engineering.
  • Optical Physics and Photonics.