Abstract: In order to determine the operational parameters of a high-frequency power amplifier (1) (for example, complex forward and return voltage or power, complex load impedance, reflection or voltage standing wave ratio) on the connecting line (3) between the output of the high-frequency power amplifier (1) and a complex load, in particular, an antenna (4), an analog measured voltage Uu proportional to the complex voltage {right arrow over (U)} on the connecting line and an analog measured voltage Ui proportional to the complex current {right arrow over (I)} on the line (3) is determined by a Buschbeck coupling device. These measured voltages are digitized, and the required operational parameters can then be calculated in a computing unit (7) from these digital values.

Abstract: In order to determine various operational parameters of a power amplifier (for example, a complex load impedance or a complex forward and return power or a reflection factor or a voltage standing wave ratio) on a connecting line between an output of the power amplifier and a complex load, complex analog forward and return voltages on the connecting line are determined by an analog coupling device. These analog voltages are digitized and converted down into a baseband by one or more digital down-converters. From these digital values corresponding in absolute value and phase to the complex forward and return voltages and present in the baseband, desired operational parameters may then be calculated by a computer.

Abstract: In order to determine various operational parameters of a power amplifier (for example, a complex load impedance or a complex forward and return power or a reflection factor or a voltage standing wave ratio) on a connecting line between an output of the power amplifier and a complex load, complex analog forward and return voltages on the connecting line are determined by an analog coupling device. These analog voltages are digitized and converted down into a baseband by one or more digital down-converters. From these digital values corresponding in absolute value and phase to the complex forward and return voltages and present in the baseband, desired operational parameters may then be calculated by a computer.

Abstract: In order to determine the operational parameters of a high-frequency power amplifier (1) (for example, complex forward and return voltage or power, complex load impedance, reflection or voltage standing wave ratio) on the connecting line (3) between the output of the high-frequency power amplifier (1) and a complex load, in particular, an antenna (4), an analog measured voltage Uu proportional to the complex voltage {right arrow over (U)} on the connecting line and an analog measured voltage Ui proportional to the complex current {right arrow over (I)} on the line (3) is determined by a Buschbeck coupling device. These measured voltages are digitized, and the required operational parameters can then be calculated in a computing unit (7) from these digital values.