Noise filter

Details Noise filter Noise filter

1989-08-21

1991-05-14

Laroche, Eugene R.

Wave transmission lines and networks

Coupling networks

Frequency domain filters utilizing only lumped parameters

333185, H03H 700

Patent

active

050159755

ABSTRACT:
A noise filter used for a digital signal circuit to control the occurrence of distortion in a digital signal waveform, including: an inductance element inserted in series in an input/output line; a capacitor element inserted between the input/output line and a ground terminal, and resistance connected in parallel to the inductance element described above. The resistance functions to control unnecessary oscillation occurring to the inductance element caused by a very small change in pulse signal, thereby eliminating noise effectively without distortion of the digital signal waveform with almost no increase in peak value with respect to the original digital signal.

REFERENCES:
patent: 2000441 (1935-05-01), Given
patent: 3457527 (1969-07-01), Matsushima et al.
patent: 3564359 (1971-02-01), Coda et al.
patent: 4215325 (1980-07-01), Sansone
patent: 4752752 (1988-06-01), Okubo
patent: 4760355 (1988-07-01), Dash et al.
patent: 4779068 (1988-10-01), Sakamoto et al.
patent: 4794353 (1988-12-01), Broyde

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