INVESTIGATION OF TRAVELING WAVE PARAMETRIC AND HYBRID COUPLED TUNNEL DIODE AMPLIFIERS

Abstract

The theory, design, construction and performanc of a tunnel diode hybrid coupled amplifier is presented with particular emphasis on gain, bandwidth, oise figure, and stability. The experimental unit developed exhibits maximum gainAND MINIMUM NOISE FIGURE AT APPROXIMATELY 100 MV AND 140 MV BIAS RESPECTIVELY. At an operating bias of 120 mv the amplifier provides 8 db to 13 db gain over the 125 to 500 mcs frequency range. Measurements of 225 and 400 mc indicate the amplifier noise figure to be approximately 4.5 db. Amplifier stability formed an importa t aspect of this investigation. For stable operation it is necessary (and sufficient) that each amplifier module itself be stable when connected to the hybrid and that the loop gain between the input and output ports of the amplifier be less tha unity. (Author

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1961
Accession Number
AD0266152

Entities

People

  • D. Fleri
  • H. Boyet

Tags

DTIC Thesaurus Topics

  • Amplifiers
  • Bandwidth
  • Construction
  • Diodes
  • Doppler Effect
  • Frequency
  • Frequency Bands
  • Frequency Shift
  • Measurement
  • Traveling Waves
  • Tunnel Diodes
  • Waves

Fields of Study

  • Physics

Readers

  • Control Systems Engineering.
  • Electrical Engineering