US PATENT SUBCLASS 333 / 180
.~.~.~ With variable coupling means

Current as of: June, 1999
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333 /   HD   WAVE TRANSMISSION LINES AND NETWORKS

24 R  DF  COUPLING NETWORKS {15}
167  DF  .~ Frequency domain filters utilizing only lumped parameters {10}
177  DF  .~.~ Transformer coupled {3}
180.~.~.~ With variable coupling means

DEFINITION

Classification: 333/180

With variable coupling means:

(under subclass 177) Subject matter wherein means are provided to adjust the degree of coupling between circuit elements or groupings of circuit elements.

(1) Note. This subclass includes means to vary either inductive coupling, capacitive coupling, resistive coupling, or any combinations of such coupling.