Digitizing Bridge Reflectance
Converting continuous-time transfer functions such as
and
to the digital domain is analogous to converting an analog
electrical filter to a corresponding digital filter--a problem which
has been well studied [343]. For this task, the
bilinear transform (§7.3.2) is a good choice. In
addition to preserving order and being free of aliasing, the bilinear
transform preserves the positive-real property of passive impedances
(§C.11.2).
Digitizing
via the bilinear transform (§7.3.2)
transform gives




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