Harmonic Distortion Measurement - Agilent Technologies ENA Series User Manual

Frequency-Offset Measurement (Option 008)
Measurement of Harmonic Distortion
Softkey
R3 (n)
R4 (n)

4. Harmonic Distortion Measurement

Harmonic distortion is a typical measurement parameter of nonlinear devices such as
mixers and amplifiers. As shown in Figure 8-13, the second and third distortions increase
by square and cube values of the fundamental signal, respectively. Thus the distortion
component increases as a function of the fundamental signal power, and the harmonic
distortion can be measured as the proportion of the 2nd and 3rd harmonic power levels to
the fundamental signal power level.
Figure 8-13 Harmonic distortion
Connection of DUT
Connect the DUT, as shown in Figure 8-14.
328
Function
*1
Absolute measurement in Port 3, reference receiver
Absolute measurement in Port 4, reference receiver
*1. n in the parentheses is the stimulus port number.
Chapter 8