Appeal No. 1996-2986
Application 08/348,625
for obtaining a group delay measurement of an electrical
network. More particularly, Appellant indicates at pages 3
and 4 of the specification that an estimate of the group delay
is determined by performing a linear regression analysis on
samples of a phase response measured at frequencies within an
aperture centered on the group delay frequency. A trace of
the group delay of the network is determined by repeating the
process across a range of frequencies.
Claim 1 is illustrative of the invention and reads as
follows:
1. In an electronic measurement instrument, a method for
estimating a trace of second measurements related to the
derivative of a trace of first measurements of an electrical
property of a network, the method comprising:
obtaining a plurality of uniformly spaced samples of a
first measurement to form the first trace; and
performing a least mean squares fit to samples in the
first trace within each of a plurality of apertures to
determine a plurality of estimates of a second measurement for
forming the second trace.
The Examiner relies on the following prior art:
Rietsch 4,065,665 Dec. 27,
1977
Potter 4,658,367 Apr. 14,
1987
2
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