Radiation pattern analysis for reflector antennas using the near-field measurements of primary feed

摘要

We investigate a radiation pattern analysis method for reflector antennas using near-field measurements of primary feed. Using the plane-wave spectrum obtained through near-field measurement, it is possible to find the incident electromagnetic field not only at an arbitrary plane, but also at each point of the reflector. This paper describes the analysis method, and verifies its validity by using array-fed reflector antenna.