Title :
The accurate measurement of high attenuation at radio frequencies
Author :
Kilby, Graham J. ; Smith, Timothy A J ; Warner, Frank L.
Author_Institution :
Nat. Phys. Lab., Malvern, UK
fDate :
4/1/1995 12:00:00 AM
Abstract :
Techniques are described which allow the traceable measurement, at low uncertainty levels, of changes in attenuation value in excess of 140 dB at frequencies from 0.5 MHz to 100 MHz. The coherent nature of the dual channel techniques employed allows the changes in the path length through an attenuator, produced when its setting is changed, to be measured accurately even at high attenuation levels
Keywords :
attenuation measurement; attenuators; calibration; 0.5 to 100 MHz; 140 dB; accurate measurement; attenuation levels; attenuator; dual channel techniques; path length; phase sensitive detection; radio frequencies; traceable measurement; uncertainty levels; voltage ratio system; Attenuation measurement; Attenuators; Calibration; Frequency measurement; Laboratories; Length measurement; Microwave measurements; Radio frequency; Radiofrequency amplifiers; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
