W C Daywitt 1994 Metrologia 30 471 doi:10.1088/0026-1394/30/5/002
W C Daywitt
Show affiliationsAn expression for the noise temperature of an arbitrarily shaped microwave cavity is derived and illustrated. The result is applied to a horn/cavity noise source and forms the basis for a set of primary reference noise standards that covers the millimetre wave frequency range in thirteen bands from WR-42 to WR-3. Power attenuation coefficients for sectoral horns are also presented.
Issue 5 (1994)
Received 11 May 1993
W C Daywitt 1994 Metrologia 30 471
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