MNC-0000-015
4 of 10
Revision F
Operation Addendum, Block Upconverter
Functional Description
The block diagram in Figure 3 provides a schematic for the BUC.
The input of the BUC provides diplexing to direct the reference
frequency to the LO Synthesizer and IF frequency to the mixer.
The synthesizer generates the LO frequency from the reference
frequency and filters it to eliminate unwnated harmonics. The LO is
amplified and passed on to the LO port of the mixer. The IF
frequency is filtered to eliminate unwanted harmonics and amplified
to the desired gain level of the BUC and passed to the IF port of the
mixer. The mixer generates the mixing products from the
combination of the IF and LO frequencies.
Figure 2, Reference Frequency Phase Noise Chart
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