US PATENT SUBCLASS 333 / 212
.~.~.~ Including directly coupled resonant sections

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}
212.~.~.~ Including directly coupled resonant sections

DEFINITION

Classification: 333/212

Including directly coupled resonant sections:

(under subclass 208) Subject matter wherein the filter structure includes resonant cavities directly coupled by slots or irises.