Agilent Technologies 8510C Manual de servicio Pagina 147

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8510XF Network Analyzer Systems 5-11
System Maintenance
Theory of Operation
Figure 5-3 Mixer Locations
Multiplication Harmonic multiplication is used to generate RF frequencies above 50 GHz
(the upper range of the 83651B RF source). The signals from the LO source
are also multiplied, in the sense that the mixers in certain ranges use a
harmonic of the LO input, and not the fundamental.
The four basic frequency bands (.045 to 2, 2 to 50 , 50 to 75, and 75 to
110 GHz) are further subdivided, in terms of how the RF and LO
frequencies are multiplied in order to achieve the desired test frequency. This
subdivision of ranges is somewhat different for 110 GHz systems and 85
GHz systems.
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