Title :
Optimum networks for simultaneous multiple beam antennas
Author :
DuFort, Edward C.
Author_Institution :
Hughes Aircraft Co., Fullerton, CA, USA
fDate :
1/1/1992 12:00:00 AM
Abstract :
The design of passive microwave circuits for the formation of simultaneous multiple beams with arbitrary but specified shapes is considered. The maximum possible efficiency is derived from energy conservation and is determined from a Hermitian matrix whose elements are the correlation coefficients between all beam pairs. The eigenfunctions of the correlation matrix are the basis of a synthesis procedure for a practical network that will achieve the maximum efficiency. Several practical examples are given where unavoidable losses are typically 1 dB or more
Keywords :
antenna feeders; correlation theory; eigenvalues and eigenfunctions; matrix algebra; microwave antenna arrays; microwave circuits; Hermitian matrix; beamforming network; correlation coefficients; correlation matrix; eigenfunctions; energy conservation; feed network; losses; maximum efficiency; optimum networks; passive microwave circuits; simultaneous multiple beam antennas; Antenna radiation patterns; Apertures; Directional antennas; Eigenvalues and eigenfunctions; Energy conservation; Feeds; Helium; Microwave circuits; Network synthesis; Scattering;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
