Appeal No. 2000-1519
Application No. 08/674,875
deficiency of APA in providing for a plurality of remote antenna
units wherein each of the units includes a signal level
comparator for generating a single gain control signal and a gain
controller for adjusting the gain of the remote antenna unit
based on the single gain control signal generated by its
associated signal level comparator.
While APA does teach a distribution antenna network
comprising a plurality of remote antenna units, these remote
antenna units do not comprise the comparator and gain controller
specified in the instant claims. While Lemson shows, in Figure
2, a comparator 42 and a gain controller 32, comparator 42 of
Lemson provides two control signals (one to attenuator 32 and one
to attenuator 34), rather than a single gain control signal, as
claimed. The claimed single gain control signal precludes the
application of the two gain control signals disclosed by Lemson.
Now it is true that Lemson discloses, at column 13, lines 7-
12, that one or both of the first and second signal level
changing devices may comprise a gain controlled amplifier and one
or both of the first and second signal level changing devices may
comprise both a variable attenuator and a gain controlled
amplifier. It is further true that column 40, lines 22-29, of
Lemson suggests that the use of a single gain control signal only
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