Werner Perndl

A w-band thermoelectric power transfer standard

This paper describes a thermoelectric waveguide power sensor for the frequency range 75 GHz to 110 GHz which can be calibrated in a waveguide microcalorimeter. The sensor can be used as a transfer standard to provide traceablity for high frequency power calibrations. The paper summarizes the sensor design and the principle of calorimeter calibration by introducing a novel measuring quantity, referred to as generalized efficiency of the transfer standard. First results of the calorimeter measurements and the sensor performance are given.

Millimeter-Wave Thermoelectric Power Transfer Standard

This paper describes a thermoelectric waveguide power sensor for the frequency range 75-110 GHz, which has been calibrated in a waveguide twin-type microcalorimeter. The sensor is suitable as a transfer standard to provide traceablity for high-frequency power calibrations. The design and calibration of the sensor are described. The calibration is based upon a novel measuring quantity, referred to as generalized efficiency. The results of mirocalorimeter measurements and sensor performance are given. The new transfer sensor is tested against conventional thermistor waveguide sensors in a direct comparison setup, showing good agreement within the estimated uncertainties.

Thermoelectric power transfer standards for V- and W-band

Improved thermoelectric waveguide power standards covering the frequency range 50 GHz to 110 GHz are described. They are specially designed for primary high frequency power calibration in microcalorimeters to provide traceability with lowest uncertainty. Design, experimental results, and comparison with conventional thermistor power sensors are presented.