| Autor: |
Iida, Hitoshi, Kinoshita, Moto, Amemiya, Kuniaki |
| Předmět: |
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| Zdroj: |
IEEE Transactions on Instrumentation & Measurement; Jun2017, Vol. 66 Issue 6, p1586-1591, 6p |
| Abstrakt: |
An attenuation calibration system is developed using an isothermal temperature control-type calorimeter for a terahertz (THz) attenuator. This system is based on a power ratio measurement by dc power substitution. A highly sensitive calorimeter achieves a simple and accurate attenuation calibration at room temperature. Calibration is performed for metalizedfilm attenuators at 1 THz using a photomixer as the THz source. The measurement uncertainties in the system are evaluated, and the expanded uncertainty is found to be 0.19–0.84 dB (k = 2) for an attenuation measurement range up to 12 dB. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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