User`s guide

16
34946A/47A—from DC to 26.5 GHz
For applications where you need only a
few high-frequency switches, the 34946A
and34947Aoffersingle-pole,double-throw
switches in either 4GHz, 20GHz or 26.5GHz
options. These modules internally mount
twoorthreeindependentAgilentN1810
series coaxial switches. These switches are
well known for their excellent insertion
loss,isolationandVSWRspecifications.
Switch read back capabilities allow you to
query the position of the switch. You can
choose higher density with the untermi-
nated switches, or select the terminated
switches to maintain impedance match.
34946A/47A option 001
These modules can also be ordered with-
out switches installed. This give you the
capabilitytoinstallyourownN1810series
switches or use the module to control the
N1810Seriesswitchesoutsidethemain-
frame.
34942A typical initial crosstalk
Frequency
10 MHz
0 dB
-10 dB
-20 dB
-30 dB
-40 dB
-50 dB
-60 dB
-70 dB
-80 dB
-90 dB
-100 dB
40 MHz 100 MHz 400 MHz 1 GHz 2 GHz
34942A typical initial insertion loss
Frequency
10 MHz
0.0 dB
0.3 dB
0.6 dB
0.9 dB
1.2 dB
1.5 dB
1.8 dB
2.1 dB
2.4 dB
2.7 dB
3.0 dB
40 MHz 100 MHz 400 MHz 1 GHz 2 GHz
34942A typical initial VSWR
Frequency
Banks
2 & 3
Banks
1 & 4
10 MHz
2.0
1.9
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
40 MHz 100 MHz 400 MHz 1 GHz 2 GHz
5050 50
101 102COM
50
201 202COM
34946A Dual 1x2 SPOT Terminated Microwave Switch
Figure 11. 34946A dual 1x2 SPDT terminated microwave switch
N1810 minimum required switch options
Coil Voltage option 124 24Vdc coil
DC Connector option 201 “D” subminiature 9 pin female
Drive option 402 position indicators