Measurement
411
9. Analyze the Parameters
The parameters for the duplexer are determined.
1. Determine the insertion loss and 3-dB bandwidth for Tx.
Setup Description Key Operation
Marker coupling: OFF Marker Fctn > Couple (Turn it
OFF)
Activating Trace 1
Trace Next
Marker 1: ON
Marker
Search/Tracking: ON Marker Search > Tracking (Turn
it ON)
Moving the marker 1 to the trace
maximum
Max
Bandwidth search: ON
Bandwidth (Turn it ON)
The insertion loss (loss) in this example is -1.243 dB, and the 3-dB
bandwidth (BW) is 85.53 MHz.
2. Determine the insertion loss and 3-dB bandwidth for the Rx.