Line with distributed low-pass filter section wherein spurious signals are attenuated
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United States of America Patent
Stats
-
Jul 28, 1987
Grant Date -
N/A
app pub date -
Jun 29, 1983
filing date -
Jul 1, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
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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