Equalizer having a substantially constant gain at a preselected

Details Equalizer having a substantially constant gain at a preselected Equalizer having a substantially constant gain at a preselected

1982-08-16

1984-06-26

Gensler, Paul L.

Wave transmission lines and networks

Automatically controlled systems

With control of equalizer and/or delay network

333 28R, 375 12, 364724, H04B 314

Patent

active

044568932

ABSTRACT:
An equalizer of a transversal filter type is given a substantially constant gain at a preselected frequency (f.sub.p) in a predetermined frequency band of an input and an output signal. For this purpose, the output signal is given by multiplying the routine transversal filter output by a reciprocal of an absolute value of a sum of complex tap gains (C.sub.1 to C.sub.N+1). Alternatively, the input signal and successively delayed signals (IN and D.sub.1 to D.sub.N) may be multiplied by the reciprocal before summation. It is possible to approximate the reciprocal by omitting those of the tap gains which are near both ends (as C.sub.1 and C.sub.N+1).

REFERENCES:
patent: 3715665 (1973-02-01), Chany
patent: 3723911 (1973-03-01), Forney, Jr.
patent: 3757221 (1973-09-01), Moehrmann
patent: 4004226 (1977-01-01), Qureshi et al.
patent: 4035735 (1977-07-01), Akashi et al.
patent: 4071827 (1978-01-01), Koike et al.
patent: 4184129 (1980-01-01), Macchi nee Donjon et al.
patent: 4290139 (1981-09-01), Walsh

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