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Precise broadband noise measurements in the frequency range 0.1 GHz to 10 GHz are used for examining the frequency response of amplifiers, spectrum analysers, broadband automatic frequency transmitters and similar instruments. Furthermore the precise broadband noise measurements are used to check the facilities for modern communication and navigation systems. The report describes the development of a coaxial noise source with the following specifications : - operating noise temperature : 650 K to 700 K; - operating frequency range : 0.1 GHz to 10 GHz. The results achieved show that the noise source can act as a broadband coaxial primary thermal noise standard and can comply with the increasing demands from industry and calibration services for traceability of measurements of electromagnetic broadband noise power. The report gives the theoretical background for the design, the construction drawings and the results of intercomparison between this coaxial thermal noise standard and the thermal noise standard for the waveguide band R 100.

Additional information

Authors: KESSEL W, Physikalisch-Technische Bundesanstalt, Braunschweig (DE)
Bibliographic Reference: EUR 11802 EN (1990) 75 pp., MF, ECU 8
Availability: (2)
Record Number: 199010191 / Last updated on: 1994-12-01
Original language: en
Available languages: en