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Broad-Band Wave-Guide Admittance Matching by Use of Irises

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2 Author(s)
R. G. Fellers ; United States Naval Research Laboratory, Washington 20, D.C. ; R. T. Weidner

A procedure is described for broad-band admittance matching of wave-guide devices by the use of simple irises. Slotted-line measurements yield the standing-wave ratio and position of voltage minimum for several wavelengths and allow the determination of the transverse plane along the axis of the wave guide at which the dispersion with wavelength of the reflection-coefficient phase is a minimum. For regions in which the standing-wave ratio is approximately independent of wavelength, this information determines the optimum position and dimensions of a purely susceptive iris which matches the admittance of the load to that of the wave guide.

Published in:

Proceedings of the IRE  (Volume:35 ,  Issue: 10 )