Beamformer for wideband signals

Details Beamformer for wideband signals Beamformer for wideband signals

1977-06-01

1978-09-05

Hubler, Malcolm F.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

340 3R, 340 6R, 343100SA, 343853, G01S 374, G01S 966

Patent

active

041124308

ABSTRACT:
A beamformer for wideband signals wherein the elemental signals available the sensors of a receiving array are subjected to Fast Fourier Transformations which decompose them into a plurality of narrowband signals. The narrowband signals, which consist of signals having the same Fourier coefficients, are subjected to appropriate phase shifts to form a plurality of narrowband beams having the directional characteristics desired. Reconstruction of the wideband signal is accomplished by subjecting the narrowband beams to an inverse Fast Fourier Transform. The beamforming is thus performed with narrowband signals, and only phase shift circuits are required.

REFERENCES:
patent: 3460145 (1969-08-01), Johnson
patent: 3892956 (1975-07-01), Fuss
patent: 4017859 (1977-04-01), Medwin

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