U3022BH10
Theory of Operation
Theory of Operation
The following is a description of the operation of the U3022BH10. Reference the U3022BH10 block
diagrams, starting
. This section assumes the user has a general understanding of
couplers, switches, and network analyzers.
RF Switch Components
S10, S11, S20, and S21
are all mechanical switches (87106-60065). The frequency range is DC to
26.5 GHz. The switches select the RF paths from the PNA-X source and receiver through interface
cables to Test Set port couplers. Refer to
"Test Set and System Block Diagrams" on page
S10 - Source to Odd Ports (1-11)
Switch 10 provides control of the Source path to PNA-X Port 1 and the Test Set odd ports (3 - 11).
In the state shown in the block diagram, switch S10 routes the RF source back to the PNA-X Port
1 and all unused Test Set odd ports (3 - 11) source paths are terminated.
S20 - Source to Even Ports (2-12)
Switch 20 provides control of the Source path to PNA-X Port 2 and the Test Set even ports (4 - 12).
In the state shown in the block diagram, switch S20 routes the RF source back to the PNA-X Port
2 and all unused Test Set even ports (4 - 12) source paths are terminated.
S11 - Receiver to Odd Ports (1-11)
Switch 11 provides control of the A Receiver path to PNA-X Port 1 and the Test Set odd ports (3 -
11). In the state shown in the block diagram, switch S11 routes the coupler arm from the PNA-X
Port 1 to the A Receiver and all unused Test Set odd ports (3 - 11) coupler arm paths are
terminated.
S21 - Receiver to Even Ports (2-12)
Switch 21 provides control of the B Receiver path to PNA-X Port 2 and the Test Set even ports (4 -
12). In the state shown in the block diagram, switch S21 routes the coupler arm from the PNA-X
Port 2 to the B Receiver and all unused Test Set even ports (4 - 12) coupler arm paths are
terminated.
RF Coupler Components
Test Set port couplers (5087-7756) provide the signal separation of the source and receiver paths.
The Test Set ports can either source or receive a signal to or from the DUT.
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U3022BH10 User's and Service Guide
