Abstract: An apparatus and a method for determining an antenna characteristic of an antenna under test in free space is disclosed. Measurement results of a transmitted power of a measurement signal transmitted between the reference antenna and an antenna under test are detected, wherein detecting takes place in the frequency domain. The detected measurement results are transformed into the time domain and a time-domain filter is applied to the measurement results converted into the time domain. A filter width of the time-domain filter is determined in dependence on a spatial distance between the reference antenna and the antenna under test. Measurement result portions that result due to a multipath propagation of the measurement signal between the reference antenna and the antenna under test are reduced or removed.

Abstract: An apparatus and a method for determining an antenna characteristic of an antenna under test in free space is disclosed. Measurement results of a transmitted power of a measurement signal transmitted between the reference antenna and an antenna under test are detected, wherein detecting takes place in the frequency domain. The detected measurement results are transformed into the time domain and a time-domain filter is applied to the measurement results converted into the time domain. A filter width of the time-domain filter is determined in dependence on a spatial distance between the reference antenna and the antenna under test. Measurement result portions that result due to a multipath propagation of the measurement signal between the reference antenna and the antenna under test are reduced or removed.

Abstract: The invention relates to a sensor system for implantation into a body of a living being, comprising a measuring unit for measuring parameters of the body and generating corresponding measurement signals, a transmitting unit for transmitting signals using the measurement signals, a control and analysis unit which is connected to the measuring unit and the transmitting unit in order to process and prepare the measurement signals and control the transmitting unit for transmitting the transmitting signals, an energy storing unit for supplying energy to the units, and an outer casing that at least partly surrounds the measuring unit, the transmitting unit, the analysis unit, and the energy storing unit.