A broadband power meter calibration system in the frequency range from 10 MHz to 40 GHz using a coaxial calorimeter

Author

Inoue, Takemi ; Yamamura, Kyouhei

Author_Institution

Light & Radiowaves Section, Electrotech. Lab., Ibaraki, Japan

Volume

45

Issue

1

fYear

1996

fDate

2/1/1996 12:00:00 AM

Firstpage

146

Lastpage

152

Abstract

A broadband power meter calibration system based on a newly constructed coaxial calorimeter has been developed in the frequency region 10 MHz-40 GHz. The RF power is measured as the difference of DC power supplied to the calorimeter built-in heater in the RF load, when RF is turned off and on, holding an isothermal control between the RF load and a temperature reference. To minimize the error due to the adiabatic coaxial waveguide, we devised a new method utilizing its output port as a test port. The evaluations showed a calibration uncertainty of (0.28-2.2)% expressed by one standard deviation at the 1 mW level in the full band

Keywords

UHF measurement; calibration; calorimeters; coaxial waveguides; measurement errors; microwave measurement; power measurement; power meters; 10 MHz to 40 GHz; DC power; RF load; RF power; adiabatic coaxial waveguide; built-in heater; calibration; coaxial calorimeter; isothermal control; roadband power meter; temperature reference; Calibration; Coaxial components; Isothermal processes; Power measurement; Power supplies; Radio frequency; Region 10; Temperature control; Testing; Uncertainty;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.481327

Filename

481327