US PATENT SUBCLASS 333 / 209
.~.~.~ Tunable

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

24 R  DF  COUPLING NETWORKS {15}
202  DF  .~ Wave filters including long line elements {4}
208  DF  .~.~ Waveguide {4}
209.~.~.~ Tunable

DEFINITION

Classification: 333/209

Tunable:

(under subclass 208) Subject matter wherein the filter

structure includes electrically or mechanically variable parameters to provide an adjustable amplitude versus frequency characteristic.