Abstract: Disclosed is a radio frequency (RF) power sensor having measurement uncertainty of less than about ±0.3%, with the ability to adjust its own calibration to maintain its accuracy over time and changing environmental conditions, by means of a suite of environmental and condition-monitoring sensors that are correlated through a model of the power sensor to the behavior of multiple measurement channels in the presence of a wide range of environmental conditions and customer use-cases. The model can incorporate one or more of artificial intelligence, machine learning, neural network, and/or large data model.

Abstract: Disclosed is a radio frequency (RF) power sensor having measurement uncertainty of less than about ±0.3%, which is achieved through the use of cross-correlation for reduction of uncertainty. The power sensor may have multiple couplers, multiple detectors, and at least one analog to digital converter. Also disclosed is a method for operating the power sensor to realize measurement uncertainty of less than about ±0.3% due to the uncorrelated nature of the measurements, as well as one or more of identifying the need for power sensor calibration, extending the time between calibrations, and predicting remaining time until calibration is required.

Abstract: Disclosed is a directional coupler circuit that has improved performance in the areas of directivity and frequency range, when compared with conventional directional couplers. The disclosed directional coupler circuit improves performance in at least two ways. The first is by the use of the voltage operational amplifier that unloads the capacitive voltage divider. The second is using forward and reflected transimpedance operational amplifier circuits to provide a short circuit to the coupling coil, namely a forward direction current sample circuit having a forward transimpedance operational amplifier and a reflected direction current sample circuit having a reflected transimpedance operational amplifier.

Abstract: Disclosed is a directional coupler circuit that has improved performance in the areas of directivity and frequency range, when compared with conventional directional couplers. The disclosed directional coupler circuit improves performance in at least two ways. The first is by the use of the voltage operational amplifier that unloads the capacitive voltage divider. The second is using forward and reflected transimpedance operational amplifier circuits to provide a short circuit to the coupling coil, namely a forward direction current sample circuit having a forward transimpedance operational amplifier and a reflected direction current sample circuit having a reflected transimpedance operational amplifier.

Abstract: Disclosed is a directional coupler circuit that has improved performance in the areas of directivity and frequency range, when compared with conventional directional couplers. The disclosed directional coupler circuit improves performance in at least two ways. The first is by the use of the voltage operational amplifier that unloads the capacitive voltage divider. The second is using forward and reflected transimpedance operational amplifier circuits to provide a short circuit to the coupling coil, namely a forward direction current sample circuit having a forward transimpedance operational amplifier and a reflected direction current sample circuit having a reflected transimpedance operational amplifier.