Electronic Filter Patents and Inventions

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Electronic Filters Patents and Inventions

Specific Filters
Invention	Inventor	Year	Patent No.
Bessel Filter
Butterworth Filter	S. (Stephen?) Butterworth	1930
Chebyshev Type I Filter
Chebyshev Type II Filter
Comb Filter
Delay Filter
Elliptic Filter (Cauer Filter)	Wilhelm Cauer	1934	US1,989,545
Gaussian Filter
Hourglass Filter	Byron Bennett	1988
Kalman Filter	Peter Swerling Rudolf E. Kalman Stanley Schmidt	1958 1960
Legendre Filter
Matched Filter
Optimum "L" Filter	Athanasios Papoulis	1958
Raised-Cosine Filter
Wiener Filter	Norbert Wiener	1940s
General Filter Types
Invention	Inventor	Year	Patent No.
Electronic Filter
Active Filter
Analog Filter
Analog Sampled Filter
Band-Pass Filter
Band-Stop Filter
Digital Filter
High-Pass Filter
Linear Filter
Low-Pass Filter
Non-linear Filter
Passive Filter