Figure 5.5 Delay line or simple low-pass filter: variation with frequency of
(a) attenuation
(b) phase shift
(c) characteristic impedance.
(d) Operation
at/c/10.
smaller than 2/V(LC). As ω approaches
2/V(LC),
the phase shift per section increases
more rapidly with frequency as shown in Figure
5.5b, indicating an increasing group delay. Beyond
2/V(LC) the phase shift remains constant at π
radians per section, whilst the attenuation in-
creases. Thus a delay lin
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