Appeal No. 1996-3960
Application No. 08/380,444
the limitation of claim 1 which reads "first waveguide means
for feeding said higher frequency directly to the antenna
element . . . second waveguide means for capacitively coupling
said lower frequency to the waveguide antenna element."
Appellant has not provided a special meaning to the term
"coupled." Accordingly, we find the term coupled should be
interpreted using the ordinary dictionary meaning: to link or
to connect. Therefore, we find that the scope of claims 1 and
3 is that the higher frequency is fed to the antenna through a
waveguide directly connected to the antenna and the lower
frequency is fed to the antenna through a capacitive
connection with a second waveguide.
We find that Gilbert fails teach a capacitive coupling
between the antenna and the waveguide which feeds that low
frequency. We find that Gilbert teaches an antenna which can
broadcast at two frequencies, one higher than the other. See
column 1, line 40. The antenna, item 11, comprises two
antenna components, items 13 and 14. See column 2, lines 11
through 23. Gilbert teaches that the high frequency is fed by
a wave item 21 guide directly to antenna component 13. See
column 2, lines 32 through 38. Gilbert teaches that the low
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