DESIGN OF STABLE, HIGH EFFICIENCY, HIGH POWER UPPER SIDEBAND UPCONVERTERS

Abstract

This report presents a logical design procedure to build stable, efficient varactor upper sideband upconverters. It establishes general design criteria to provide unconditional stability, low spurious, predictable diode impedance levels, and predictable efficiency. A sample design is included to illustrate one means of realizing the design constraints and showing the agreement between predicted and achieved stability, impedance match, efficiency, and power output. The second part of the report discusses means of obtaining high power operation by using multiple varactors. It is concluded that the best configuration is a series stack of varactor diodes. With allowance made for the package parasitic reactances, it is proven analytically that stacked, packaged diodes operate efficiently as an upper sideband upconverter. Finally, an example of a stacked varactor upconverter design was built and measured. The agreement between predicted and obtained results is remarkably good.

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Document Details

Document Type
Technical Report
Publication Date
Jun 17, 1970
Accession Number
AD0709362

Entities

People

  • Raymond L. Sicotte

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Bandstop Filters
  • Circuits
  • Communication Systems
  • Computer Programs
  • Conversion
  • Design Criteria
  • Equivalent Circuits
  • Frequency
  • Impedance
  • Low Pass Filters
  • Measurement
  • Power Levels
  • Resistance
  • Transmission Lines
  • Varactor Diodes
  • X Band

Readers

  • Applied Combinatorial Optimization and Logic Circuit Design.
  • Electronics Engineering