Determining The Bandwidth Of The Trace (Bandwidth Search) - Agilent Technologies ENA Series User Manual

Determining the Bandwidth of the Trace (Bandwidth Search)

The bandwidth search is a function for determining the bandwidth of the trace, center
frequency, cut-off points (on the higher frequency and the lower frequency sides), Q, and
insertion loss, based on the position of the active marker. The definitions of the parameters
determined through the bandwidth search are shown in Figure 6-5 and Table 6-3. The user
specifies the defined bandwidth value in Figure 6-11.
Figure 6-11 Bandwidth Parameters
Table 6-3 Definitions of Bandwidth Parameters
Bandwidth Parameter
Insertion loss (
Lower frequency cut-off point
(
low
Higher frequency cut-off point
(
high
Center frequency (
Bandwidth (
Q
Executing a Bandwidth Search
Step 1. Place the active marker on the desired point on the trace on which the bandwidth search is
executed. The response value of this active marker itself is the insertion loss in the
Chapter 6
)
loss
)
)
)
cent
)
BW
Analyzing Data on the Trace Using the Marker
Definition
The measured value of the position of the active marker at
the time the bandwidth search is executed.
Frequency at one of two measurement points, both separated
by the defined bandwidth value from the active marker
position, which corresponds to the lower of the two
frequencies.
Frequency at one of two measurement points, both separated
by the defined bandwidth value from the active marker
position, which corresponds to the higher of the two
frequencies.
Frequency at the midpoint between the lower frequency
cut-off and higher frequency cut-off points. (
The difference in frequency between the higher frequency
cut-off and lower frequency cut-off points (
Value obtained by dividing the center frequency by the
cent
---------- -
bandwidth ( ).
BW
Data Analysis
high + low
-------------------------- -
).
2
high low – ).
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