Engineering topics
Publications and source records attributed to Ludwig, A..
Computer program aids in the design of maximum efficiency dual reflector antenna systems. It designs a shaped cassegrainian antenna which has nearly 100 percent efficiency, and accepts input parameters specifying an existing conventional antenna and produces as output the modifications necessary to conform to a shaped design.
Fourteen computer programs have been developed for antenna feed system design and analysis. The programs cover a large spectrum of feed design problems, from primary feed pattern synthesis to the farfield pattern of the main reflector, including analyses of structural distortions.
Digital computer technique for computing scattered pattern of complex hyperboloid subreflector in Cassegrain antenna feed systems
Computer program on theoretical radiation patterns of horn antenna excited by combined cylindrical waveguide modes
Computer program for plotting antenna radiation amplitude and phase patterns
Computer program generating binary coded decimal punched cards for scattering program describing subreflector figure of revolution
Program for computing efficiency of circular paraboloidal antenna feed system
Radio communication system instrumentation for Mariner IV space probe, and received spectrograms
Correction for gain computations based on pattern integration during translational motion of antenna
Calculated gain of advanced antenna system
Efficient antenna systems - aperture blockage and surface tolerance loss calculations for nonuniform illumination and error distribution
Cassegrain antenna efficiency - frequency and size dependence of subreflector beamshaping flange
Antennas for space communications - gain loss calculations and feed horn investigation