HE910 Hardware User Guide
1VV0300925 Rev. 32 Page 56 of 111 2019-11-25
6.6.2. Transmission line measurements
HP8753E VNA (Full-2-port calibration) has been used in this measurement session. A
calibrated coaxial cable has been soldered at the pad corresponding to RF output; a SMA
connector has been soldered to the board in order to characterize the losses of the
transmission line including the connector itself. During Return Loss / impedance
measurements, the transmission line has been terminated to 50 Ω load.
Return Loss plot of line under test is shown below:
Figure 6-2 Return Loss Plot
Line input impedance (in Smith Chart format, once the line has been terminated to 50 Ω
load) is shown in the following figure:
Figure 6-3 Line input impedence
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