| Author(s): |
Dazhen Gu; David K. Walker; James P. Randa; |
| Title: |
Variable Termination Unit for Noise-Parameter Measurements |
| Published: |
April 01, 2009 |
| Abstract: |
NIST has upgraded its measurement capability of noise parameters on low-noise amplifiers with a variable termination unit (VTU) in the 1 to 12.4 GHz frequency range. Such a unit allows improved time efficiency and accuracy in the noise-temperature measurements used to de-embed noise parameters of amplifiers. We present the design and the characterization of the VTU. Measured results of one particular amplifier at integer frequencies from 8 GHz to 12 GHz show satisfactory accuracy. The VTU method is also validated through comparison with results from the manual method. |
| Citation: |
IEEE Transactions on Instrumentation and Measurement |
| Volume: |
58 |
| Pages: |
pp. 1072 - 1077 |
| Keywords: |
Amplifier noise parameters, source pull technique, noise measurement, uncertainty analysis. |
| Research Areas: |
Electromagnetics |
| PDF version: |
 Click here to retrieve PDF version of paper (662KB) |
