Appeal No. 2001-1941
Application No. 09/023,469
cables may include, for example, T1 carrier cables, optical
fibers, or the like,” the examiner concludes (answer, page
4) that “it would have been obvious to one of ordinary skill
in the art at the time the invention was made to provide
twisted-pair cable to the system of Lee in order [to] reduce
the cost of the system.” With respect to the intermediate
frequency signal, the examiner indicates (answer, page 4)
that “Baba teaches that the received high frequency signal
fR2 from a distant repeater is first down convert[ed] into
the intermediate frequency signal fm2 and sent to the
preceding repeater over the cable for further processing”
(column 3, lines 18 through 36). With this teaching in
mind, the examiner contends (answer, page 4) that “[i]t
would have been obvious to one of ordinary skill in the art
at the time the invention was made to provide the teaching
of Baba to the transmission of Lee in order to reduce
radiation of the transmitted signal, thereby reducing
transmission loss ([Baba,] col. 5, lines 21-24).”
Appellants argue (brief, page 7) that:
First, neither Lee nor Baba teach or suggest,
alone or in any combination, what the claims
recite, namely the transmission of an intermediate
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