This page is a sub-page to
LOSSES IN RELAYS, CABLES, ADAPTORS AND CONNECTORS.
The signal source is described here: Impedances of source, load and DUTs. where also the first section of the receiver is described.
The rest of the receiver is described here: Measurement system November 2012 An amplifier with a PSA4-5043 was inserted between the 3dB pad on the circulator and the measurement system.
The Linrad S-meter is set to show dBm and the different DUTs are inserted and removed a couple of times. The average of the RMS power is computed (Linrad-03.47 and later.) Figure 1 shows the resulting screen for DUT2.
|Figure 1. The signal level with and without DUT2. The average levels are 44.8296 and 44.7691 for an insertion loss of 0.0605 dB.|
device Mismatch Insertion loss loss (dB) (dB) Tx port 0.00005 0.0605 DUT1 0.16591 DUT2 0.00005 DUT3 0.00073 DUT4 0.03707 DUT13 0.16672 DUT31 0.17655 DUT123 0.16538 DUT132 0.16572 DUT312 0.17403 DUT213 0.16719 DUT231 0.17037 DUT42 0.03707 DUT24 0.08956 DUT34 0.00060 DUT32 0.00064 DUT23 0.00128 DUT43 0.00106
Table 1 Impedance and mismatch loss for the different DUTs.