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Microwave Impedance-Plotting Device

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2 Author(s)
Altar, W. ; Westinghouse Research Laboratories, East Pittsburgh, Pa. ; Coltman, J.W.

The plotting device described here serves as a computer for the angular position of load points in the Smith Chart for microwaves. By means of a simple mechanical arrangement the computation from measured standing-wave patterns is considerably expedited. The accuracy does not fall off as the distance from generator to probe increases, and in many such cases may considerably exceed that attainable with a slide rule. The gadget should prove useful where reflection measurements at variable frequency are repeatedly required as, for instance, in Q-circle and other resonance measurements.

Published in:

Proceedings of the IRE  (Volume:35 ,  Issue: 7 )

Date of Publication:

July 1947

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