Measurement of Radio-Frequency Radiation Pressure: The Quest for a New SI Traceable Power Measurement

Abstract

In the quest for a new SI traceable power measurement, we performed measurements of the radiation pressure of a radio-frequency (RF) electromagnetic field. There are several groups around the world investigating methods to perform more direct SI traceable measurements of RF power (where RF is defined to range from 100s of MHz to THz). A measurement of radiation pressure offers the possibility for a power measurement traceable to the kilogram and to Planck's constant through the redefined SI. Towards this goal, we demonstrate the ability to measure the radiation pressure/force carried in a field at 2.45 GHz and 15 GHz using two different devices.