6 MEASUREMENT DATA ANALYSIS
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6.1.8.2 Bandwidth Search
The bandwidth search function allows the user to determine and view the following
parameters of a passband or a stopband: bandwidth, center frequency, lower frequency,
higher frequency, Q value, and insertion loss (See figure 6.9). In the figure, F1 and F2
are the lower and higher cutoff frequencies of the band respectively.
The bandwidth search is executed from the reference point. The user can select as
reference point the active marker or the maximum of the trace. The bandwidth search
function determines the lower and higher cutoff frequencies, which are apart from the
reference point response by bandwidth value defined by the user (usually –3 dB).
Figure 6.9 Bandwidth search
Bandwidth
Value
F1
F2
Bandwidth
Value
F1
F2
Passband
Stopband
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