United States Patent 4,202,005
May 6, 1980

Distributed Collector Ballast Resistor Structure
Paul W. Sanders

Filed November 20, 1978
Image of US PATENT 4,202,005

Abstract of the Disclosure

A distributed collector ballast resistor structure for use in a distributed collector contacted transistor comprises a diffusion geometry which is designed to employ a number of distributed collector ballast resistors in parallel as opposed to a single bulk resistor in a series with the collector circuit thereby generating a lower current for a given voltage during avalanche while allowing lower saturation voltage, better RF gain and higher saturated output power.
Figure descriptions: cover graphic

  • an overhead view of the diffusion geometry for distributed collector ballast resistors of the present invention.

 Citations [54]:
4,123,672 10/1978 Kasperkoritz
National Museum of American History
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