When the signal passes through the filter, it gets some shift in phase. Phase shift constant signi-
fies the phase shift in the signal when it passes through the filter.
Units of Phase Shift
Theunit of phase shift is radians or degrees. The relation between radians and degrees can be
written as follows:
p radians = 180
°
13.4.4 Characteristic Impedance (Z
0
)
Characteristic impedance is the image impedance of a two-port network. For symmetric net-
works, the image impedance at port 1−1′ is equal to the image impedance at port 2−2′. They are
equal to the characteristic impedance Z
0
.
13.5 FIL ...
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