THE USE OF TRANSISTORS AS BROADBAND VOLTAGE-VARIABLE TIME DELAYS.

Abstract

A mathematical model is developed that describes the variable time-delay performnce of a high-frequency transistor amplifier. Time-delay change is achieved by voltage variation of the minority-carrier transit time and the collector capacitance of the transistor. A figure of merit clarifies the relationship between time delay and amplifier bandwidth and is used to obtain maximum utilization of the voltage-variable transistor parameters. Other delay techniques, specifically the LC lumped approximate transmission-line section, provide voltage-variable continuous time delay, using only a variable capacitance. Comparison between the transistor and LC techniques shows that using changes in transit time of ordinary HF transistors offers little advantage over the LC technique. (Author)

Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1969
Accession Number
AD0702015

Entities

People

  • E. L. Skuldt

Organizations

  • Stanford University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Accumulators
  • Amplifiers
  • Bandwidth
  • Broadband
  • Capacitance
  • Figure Of Merit
  • Frequency
  • Frequency Bands
  • Mathematical Models
  • Minority Groups
  • Models
  • Transistor Amplifiers
  • Transistors
  • Transmission Lines

Readers

  • Electrical Engineering
  • Microwave Engineering.
  • Semiconductor Device Technology