Method and apparatus for optical RF amplitude equalization

Details Method and apparatus for optical RF amplitude equalization Method and apparatus for optical RF amplitude equalization

1986-04-30

1988-09-13

Ruggiero, Joseph

Boots, shoes, and leggings

364802, G06G 900

Patent

active

047713976

ABSTRACT:
Amplitude equalization of a distorted multifrequency signal is accomplished by acousto-modulating the signal with a coherent light beam and focusing a resultant image on a Fourier plane where the frequency components of the image are spatially distributed. A control array, positioned in the plane, contains adjacent elements having optical filtering properties variable with respect to each other thereby selectively altering the optical amplitude of each image frequency component passing through the elements. The resultant transformed image then undergoes conversion to an electrical signal having its amplitude equalized relative to the distorted input signal.

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