Measuring Devices With Your Network Analyzer - HP 8712ES User Manual

Making Measurements

Measuring Devices with Your Network Analyzer

Measuring Devices with Your Network
Analyzer
This section provides a basic overview of how the network analyzer
measures devices. The analyzer has an RF signal source that produces
an incident signal that is used as a stimulus to the device under test.
Your device responds by reflecting a portion of the incident signal and
transmitting the remaining signal. If the device is passive, some of the
transmitted signal will be absorbed, indicating a "lossy" device. If the
device is active, the transmitted signal may be amplified, indicating that
the device has gain. Figure 3-1 shows how a device under test (DUT)
responds to an RF source stimulus.
Figure 3-1 DUT Response to an RF Signal
ES User's Guide 3-3