Documento de conferencia

New broadband thermal noise primary standard in coaxial technology

Conference Proceeding cp
IEEE MTT-S International Microwave Symposium Digest
  • Fecha: 07 septiembre 2011
  • ISSN: 0149645X
  • ISBN: 9781612847566
  • Tipo de fuente: Ponencia
  • DOI: 10.1109/MWSYM.2011.5972675
  • Tipo de documento: Documento de conferencia
A broadband primary standard for thermal noise measurements is presented and its thermal and electromagnetic behavior is analyzed by means of analytical and numerical simulation techniques. It consists of a broadband termination connected to a 3.5mm coaxial airline partially immersed in liquid Nitrogen. The main innovative part of the device is the thermal bead between inner and outer conductors, designed for obtaining a proper thermal contact and to keep low both its contribution to the total thermal noise and its reflectivity. A sensitivity analysis is realized in order to fix the manufacturing tolerances for a proper performance in the range 10MHz-26.5GHz. © 2011 IEEE.

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