User's Manual

GL865-DUAL/QUAD V3 Hardware User Guide
1vv0301018 Rev.7 – 2013-10-30
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights
Reserved. Page 33 of 78
Mod. 0805 2011-07 Rev.2
7.2.2. 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 GL865-DUAL/QUAD
V3 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: