Method for the broadening of a volume antenna beam

Details Method for the broadening of a volume antenna beam Method for the broadening of a volume antenna beam

1996-08-26

1998-06-16

Tarcza, Thomas H.

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

Directive

Including a steerable array

342154, 343891, H01Q 324

Patent

active

057678057

ABSTRACT:
The disclosure relates to electronic scanning array antennas whose radiating elements are distributed within a volume instead of being distributed on a reflective surface that is plane or generated by revolution. It pertains to a method for broadening the beam of a volume antenna aimed in a direction without giving it asymmetrical deformation or substantially increasing the secondary lobes. This method consists of applying the following phase excitation law to the radiating elements of the volume antenna: ##EQU1## where .lambda. is the wavelength of the radiation transmitted or received and .rho..sub.n is the distance from the radiating element with an index n considered to a point I external to the volume antenna located on the axis of aiming direction on the side opposite the aiming direction.

REFERENCES:
patent: H173 (1986-12-01), Claborn et al.
patent: 3797020 (1974-03-01), Roger et al.
patent: 4500882 (1985-02-01), Katagi et al.
patent: 5047785 (1991-09-01), Julian

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