Cylindrical phased array antenna system to prodce wide open cove

Details Cylindrical phased array antenna system to prodce wide open cove Cylindrical phased array antenna system to prodce wide open cove

1986-12-29

1994-06-28

Blum, Theodore M.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

342372, 342375, H01Q 322, H01Q 324, H01Q 326

Patent

active

053251016

ABSTRACT:
A cylindrical phased array antenna system capable of scanning at rates faster than the information rate of signals being received so that no information is lost by the scanning process, and without sensitivity loss due to sampling and with reduced frequency selectivity. The cylindrical phased array is comprised of the means to decompose the distribution of current on the radiator elements caused by wave incidence into component signals which are the Fourier spatial harmonics of the distribution, heterodyne means to differentially phase shift these component signals at rates exceeding 4 radians per cycle of the highest frequency present in the information content of the incident wave, and means to form multiple complex-weighted sums of the component signals. The sums are multiple time sequenced responses, each response corresponding to a different beam of sensitivity. The beam responses from any particular incident signal to be differentially delayed to occur in unison, and then noncoherently added, giving rise to a compressed pulse whose time of occurrence is related to the signal angle of incidence.

REFERENCES:
patent: 4316192 (1982-02-01), Acoraci

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