Title :
Axial astigmatic fields in the focal region
Author_Institution :
Lincoln Laboratory, Massachusetts Institute of Technology, Lexington, MA, USA
fDate :
9/1/1975 12:00:00 AM
Abstract :
The axial field distribution near the focus of a collimating system subject to astigmatism is examined. It is shown that a doubly-peaked focusing response results and that the aperture efficiency is increased with a greater illumination taper. The results are applicable to a paraboloidal reflector with different foci in the two principal planes.
Keywords :
Reflector antennas; Antennas and propagation; Costs; Current distribution; Digital filters; Electromagnetic radiation; Electrons; Finite impulse response filter; Interpolation; Low pass filters; Vision defects;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.1975.1141141
