Title :
The waveguide below-cutoff attenuation standard
Abstract :
A semi-tutorial review of the history, development and application of waveguide below-cutoff attenuation standards is presented. A brief summary of the EM theory is followed by descriptions of the various designs implemented over a span of 60 years. Designs range from simplistic to elaborate electro-mechanical creations stretching the toolmaker´s art yet ultimately dependent upon the primary standard of length.
Keywords :
attenuation measurement; history; measurement standards; microwave measurement; waveguide attenuators; EM theory; electro-mechanical creations; evanescent mode; primary length standard; waveguide below-cutoff attenuation standards; Attenuation; Attenuators; Frequency; History; NIST; Propagation losses; SQUIDs; Superconducting microwave devices; Tellurium; Uncertainty;
Conference_Titel :
Microwave Symposium Digest, 1997., IEEE MTT-S International
Conference_Location :
Denver, CO, USA
Print_ISBN :
0-7803-3814-6
DOI :
10.1109/MWSYM.1997.596534
