Chapter 8 323
Frequency-Offset Measurement (Option 008)
Measurement of Mixers
8. Frequency Offset
Measurement
(Option 008)
5. Implementing Mixer Calibration
The E5070B/E5071B provides a vector-mixer calibration function and a scalar calibration
function for measuring frequency conversion devices.
For detailed information on mixer calibration, see "Vector-Mixer Calibration" on page 223
and "Scalar-Mixer Calibration" on page 233.
6. Conversion Loss Measurement
Conversion loss is a typical measurement parameter of a mixer. As shown in Figure 8-9,
conversion loss indicates the level of efficiency in which input frequency is converted to
another frequency. Furthermore, conversion loss can be defined as a proportion of output
frequency power to input frequency power at a given LO signal level. The following
description is based on an example of conversion loss measurement by using the
vector-mixer calibration.
NOTE You must implement vector-mixer calibration in advance. For detailed information on
vector-mixer calibration, see "Vector-Mixer Calibration" on page 223.
Figure 8-9 Conversion loss of mixer
Connection of measured mixer
Connect the calibration mixer with the IF filter, measured mixer and external signal source,
as shown in
Figure 8-10.
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