Agilent Technologies 8510C Manual de Serviço descarregar pdf (Página 145)

8510XF Network Analyzer Systems 5-9

System Maintenance

Theory of Operation

Signal Separation The illustration below shows how directional couplers are used to separate

incident RF signals (“a1” and “a2”) from reﬂected or transmitted RF signals

(“b1” & “b2”). The separated RF signals are mixed with a common LO

signal, in order to generate the four IF inputs to the network analyzer.

This process is typical of 8510C mixer-based test sets generally; it is not

unique to the 8510XF.

Figure 5-2 Signal Separation and Mixing

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Agilent Technologies 8510C Manual de Serviço Página 145