The scan limits of point-fed paraboloidal and line-fed parabolic-cylinder reflector antennas are derived for large reflectors of arbitrary focal-length-to-diameter ratio (F-number). The paper presents a numerical method which incorporates the effects of all higher order spatial distortions (ray aberrations) neglected in previous analyses. Finally, the results demonstrate that paraboloids of large F-number have substantially less scan capability than could be inferred from earlier analyses.
IEEE Transactions on Antennas and Propagation
- Pub Date:
- September 1979
- Antenna Feeds;
- Antenna Radiation Patterns;
- Parabolic Reflectors;
- Space Communications, Spacecraft Communications, Command and Tracking