Method and measurement arrangement for determining an antenna factor of a monopole antenna

A method for determining an antenna factor of a monopole antenna, the method comprising the following steps:

• providing a universal artificial antenna and determining a coupling capacitance of the universal artificial antenna;
• providing a matching device, connecting the matching device with the universal artificial antenna, and measuring a scattering parameter associated with the universal artificial antenna,
• providing a calibration adapter, connecting the matching device with the calibration adapter such that the calibration adapter replaces the universal artificial antenna, and measuring a scattering parameter associated with the calibration adapter,
• determining an input capacitance of the matching device using the ratio of the scattering parameter associated with the universal artificial antenna to the scattering parameter associated with the calibration adapter;
• providing a monopole antenna, connecting the monopole antenna with the matching device and the universal artificial antenna, and measuring a scattering parameter associated with the universal artificial antenna;
• providing the calibration adapter, connecting the monopole antenna with the matching device and the calibration adapter such that the calibration adapter replaces the universal artificial antenna, and measuring a scattering parameter associated with the calibration adapter;
• determining a capacitance of the monopole antenna based on a geometric model of the monopole antenna;
• and
• determining the antenna factor of the monopole antenna based on the capacitance of the monopole antenna, the coupling capacitance of the universal artificial antenna and the input capacitance of the matching device.

A measurement arrangement for determining an antenna factor of a monopole antenna, wherein the measurement arrangement having different measurement setups, wherein the measurement arrangement comprises a universal artificial antenna, a calibration adapter, a matching device, a monopole antenna and a network analyzer,

• wherein, in a first measurement setup for determining the capacitance of the universal artificial antenna, the universal artificial antenna is coupled to the calibration adapter;
• wherein, in a second measurement setup for measuring the scattering parameter associated with the universal artificial antenna, the matching device is coupled to the universal artificial antenna, and the matching device and the artificial antenna being coupled to the network analyzer;
• wherein, in a third measurement setup for measuring the scattering parameter associated with the calibration adapter, the matching device is coupled to the calibration adapter, and the matching device and the calibration adapter being coupled to the network analyzer;
• wherein, in a fourth measurement setup for measuring the scattering parameter associated with the universal artificial antenna, the matching device being coupled to the monopole antenna, the universal artificial antenna being coupled to the monopole antenna, and the universal artificial antenna and the matching device being coupled to the network analyzer;
• and
• wherein, in a fifth measurement setup for measuring the scattering parameter associated with the calibration adapter, the matching device being coupled to the monopole antenna, the calibration adapter being coupled to the monopole antenna, and the calibration adapter and the matching device being coupled to the network analyzer.