Measuring An Unbalanced And Balanced Bandpass Filter; Evaluation Steps - Agilent Technologies ENA Series User Manual

Measuring an Unbalanced and Balanced Bandpass Filter

This section introduces an example of actually evaluating the unbalanced and balanced
SAW bandpass filter with a center frequency of 942.5 MHz. Figure 14-25 shows the
measurement circuit in a condition for evaluating the DUT.
Figure 14-25 Measurement Circuit

Evaluation Steps

Here, the DUT is evaluated by following the steps described in Table 14-6.
Table 14-6 Evaluating the Deviation from a Linear Phase
Step
"1. Connecting the DUT" on page 308
"2. Setting the Measuring
Conditions" on page 308
"3. Performing a Calibration" on
page 309
"4. Setting a Balance Conversion
Topology" on page 310
"5. Selecting Measurement
Parameters" on page 311
"6. Extending the Calibration Plane
(removing the cause of error)" on
page 312
"7. Setting the Port Reference
Impedances" on page 313
Chapter 14
Measuring an Unbalanced and Balanced Bandpass Filter
Description
The DUT is connected.
The measurement conditions are defined.
The full 3 port calibration is executed.
The balance conversion topology is specified.
The mixed-mode S-parameters are selected.
The calibration reference plane is extended.
The port reference impedances are specified.
Measurement Examples
307