Appeal No. 20000-0717
Application 08/906,676
first signal splitter 29 which has an input from a source and
a first and second output. A bandpass filter 30 has a signal
input, a signal output and a control input, wherein the signal
input is coupled to the first output of the first signal
splitter and the response of the band pass filter is in
accordance with a control signal (provided by phase comparator
32 and control amplifier 33). A second signal splitter 31 has
a filter input and a third output, wherein the filter input is
coupled to the signal output of the bandpass filter. However,
we do not find the “fourth output,” as required by the instant
claim. Rogers also discloses a phase control circuit 32 having
a first phase input, a second phase input and a phase output,
wherein the first phase input is coupled to the second output
(of the first signal splitter 29), the second phase input is
coupled to the third output (of the second signal splitter 31)
and the phase output is coupled to the control input (to
bandpass filter 30).
Independent claims 10 and 18 do not require the “fourth
output” of independent claim 1. However, each of the
7
Page: Previous 1 2 3 4 5 6 7 8 9 Next
Last modified: November 3, 2007