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Bandwidth Limitations and Synthesis Procedures for Negative Resistance and Variable Reactance Amplifiers


Aron, Richard Michael (1961) Bandwidth Limitations and Synthesis Procedures for Negative Resistance and Variable Reactance Amplifiers. Dissertation (Ph.D.), California Institute of Technology. doi:10.7907/NF7W-1K08.


The bandwidth limitation on the reflection coefficient of circuits containing a reactance limited negative conductance such as a tunnel diode is derived, and the insertion loss method of modern network theory is adapted to the synthesis of low pass ladder equivalents of amplifiers containing these elements. Amplifiers which have a considerable bandwidth advantage over simple single tuned circuits, and which approach the ultimate bandwidth limit as rapidly as possible as the number of passive components is increased, are demonstrated. Fundamental bandwidth limitations of three-frequency nonlinear reactance amplifiers, parametric amplifiers, and non-inverting upconverters are also found. A low pass ladder equivalent circuit and the insertion loss method are shown to be useful tools for synthesis of these amplifiers. Considerable bandwidth advantage over single-tuned circuits is again demonstrated. Syntheses which yield the ultimate bandwidth as the number of circuit elements is increased are found. These synthesis methods and the reverse predistortion technique are used to synthesize stable amplifiers whose bandwidth capability increases almost linearly with the number of active elements employed. Relationships between physically achievable amplifier circuits and the low pass equivalents are shown, and the general compatibility of presently available active elements with these circuits is considered.

Item Type:Thesis (Dissertation (Ph.D.))
Subject Keywords:Electrical Engineering; Physics
Degree Grantor:California Institute of Technology
Division:Engineering and Applied Science
Major Option:Electrical Engineering
Minor Option:Physics
Thesis Availability:Public (worldwide access)
Research Advisor(s):
  • Dow, Daniel G.
Thesis Committee:
  • Dow, Daniel G. (chair)
  • George, Nicholas A.
  • Mullin, Francis J.
  • Franklin, Joel N.
Defense Date:August 1960
Funding AgencyGrant Number
Office of Naval Research (ONR)220(13)
Radio Corporation of AmericaUNSPECIFIED
Bendix Aviation CorportationUNSPECIFIED
Record Number:CaltechETD:etd-03232006-141908
Persistent URL:
Related URLs:
URLURL TypeDescription Item Electron Tube and Microwave Laboratory Technical Report 15
Default Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:1071
Deposited By: Imported from ETD-db
Deposited On:27 Mar 2006
Last Modified:10 Nov 2023 22:45

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