Line with distributed low-pass filter section wherein spurious s

Details Line with distributed low-pass filter section wherein spurious s Line with distributed low-pass filter section wherein spurious s

1983-06-29

1987-07-28

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333206, 333 12, 333181, H01P 1201

Patent

active

046834508

ABSTRACT:
For suppression of high-frequency spurious signals (noise) present on an electrical transmission line, the line incorporates at least one section comprising a distributed low-pass filter. This section is constructed so that its wave impedance (Z.sub.1) has a different value than the wave impedance (Z.sub.0) of the neighboring line sections. This filter line section additionally provides considerable dielectric losses and/or skin effect losses. At both ends of the filter line section, at which the wave impedance changes, multiple reflections arise that attenuate the high-frequency spurious signals (noise). The dielectric or skin effect losses produce strong attenuation of the undesired resonances that arise from the reflections, as well as further attenuation of spurious signals in the highest frequency region.

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patent: 4347487 (1982-08-01), Martin
patent: 4376920 (1983-03-01), Smith

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