The Keysight/Agilent/HP 70910A RF section provides coverage from 100 Hz to 26.5 GHz. This RF section is used in the 71209A Opt 001 spectrum analyzer and the 71910A wide bandwidth receiver. Diode-pair mixing provides lower conversion loss, allowing the spectrum analyzer to have sensitivities that compete with fundamentally mixed designs.
The sensitivity is also improved by the use of a built-in preamplifier before the first mixer (in the microwave path). The 70910A adds the switchable bypass path around the yig-tuned filter (YTF) for making very sensitive measurements when extraneous signals are not a problem. Also, the 70910A ensures that the minimum bandwidth through the YTF is greater than 36 MHz and the minimum bandwidth through the low-band path is greater than 45 MHz.
For millimeter measurements, this RF section includes the extra switching and signals necessary to connect external mixers, including 11974 series preselected mixers. A switched LO is routed to the front panel for connection to an external mixer.
- Provides RF coverage from 100 Hz to 26.5 GHz
- Preselector bypass for wider bandwidths
- Compatible with external mixers, including the Keysight 11974 series
- Rear panel output include the 3 to 6.6 GHz LO and two IF outputs at 321.4 MHz and 21.4 MHz