Vector-Mixer Calibration; Overview Of Vector-Mixer Calibration - Agilent Technologies ENA Series User Manual

Rf network analyzers

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Vector-Mixer Calibration

The E5070B/E5071B has a vector-mixer calibration function for use in measuring

frequency conversion devices.

The vector-mixer calibration allows you to measure the magnitude, phase and group delay

of the mixer's conversion loss by using in combination calibration standards

(OPEN/SHORT/LOAD) and calibration mixer with an IF filter, as well as the network

de-embedding function incorporated in the E5070B/E5071B.

You can also perform balanced mixer measurements by using two calibration mixers that

each has an IF filter.

Note that the vector-mixer calibration is only available for swept IF measurement, not for

fixed IF or fixed RF measurement.

Figure 4-65 shows an outline of vector-mixer calibration.

Vector-mixer calibration is implemented by eliminating the characteristics of the

calibration mixer and IF filter by using the network de-embedding function after full 2-port

calibration has been completed. As shown in Figure 4-65, using the up/down conversion

method allows you to specify the same sweep measurement frequency for the input and

output ports, thus enabling full 2-port calibration at the end of the target port.

Consequently, only the characteristics of the measured mixer (DUT) can be obtained by

using the network de-embedding function, after eliminating the characteristics of the

calibration mixer with an IF filter from all measurement results.

Since the up/down conversion method is used in vector-mixer calibration, the

frequency-offset function is not used.

Vector-Mixer Calibration

E5070b E5071b