Application Examples CMU
1100.4903.12 4.102 E-10
CMU200 as RF Generator and I/Q Analyzer
If IQ signals are applied to the receive section of the tester, signal analysis can be performed in the
same manner as when analyzing an RF signal. In this test setup, a modulation analysis is useful since
it assesses the quality of an IQ signal. The modulation analysis measures quantities such as the I/Q
offset and I/Q imbalance, which are directly related to the I/Q signals. In addition, it provides more com-
plex evaluations such as the error vector magnitude (EVM).
IQ/IF scenario: User defined: RX Path: I/Q IN/OUT TX Path: Bypass
IQ OUT
RF OUT RF IN
CMU200
Signal-
generation
CMU-
B17
IQ IN
DUT
(Receiver)
Signal
analysis
Transmitter
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