On the maximization of the transmission factor between a radiator and receiving antenna
DOI:
https://doi.org/10.1109/ICATT.1995.1234112Abstract
The report is devoted to the problem of maximization of transmission factor between a radiator and receiving antenna, at their location both in the far-field zone and at close distance. The latter problem could be investigated thanks to an integral representation of wave field as a superposition of purely homogenous plane waves as proposed by one of the authors. Here the cases are considered when either only a transmitting antenna, or only a receiving antenna, or both ones are optimized.
In the first case for the known parameters of the receiving antenna, the current distribution on the radiator is sought that provides maximum power loss at the load of this particular receiving antenna (with the fixed power fed to the radiator). In the second case, for the known field incident on the receiving antenna, the current distribution is sought in this antenna in the transmission regime. Hence, its excitation is determined, which, if the same antenna is set to the receiving regime, provides a maximum power extraction from the incident field. In the third case, the current distribution in the antenna in the receiving regime is sought that provides maximization of the transmission factor between identical transmitting and receiving antennas.
All these problems are referred to as local non-pattern problems of synthesis. Local non-pattern synthesis problem implies maximization, under certain additional conditions, of some value characterizing the field in the fixed point of space. Such values are, for example, the modulus of a field component in a given point, antenna gain in a given direction, energy volume density at a given point. In the considered problems, the maximized value is the power fed to the load of a receiving antenna, the center of which is located at the given space point.
The consideration is made taking into account heat losses in the optimized antenna. Due to this all the problems are reduced to a correct mathematical apparatus.
