Analog Devices EVAL-ADGM1004SDZ User Manual page 10

UG-1462
Figure 10 shows the ADGM1004
analyzer two-port S(2,1) measurement) measurement results that
are de-embedded with respect to the PCB calibration transmission
line losses. The blue trace is the RF2 to RFC switch channel, and
the red trace is the RF1 to RFC switch channel. The dashed traces
are the respective return loss traces. The performance of the
RF2 switch is identical to the RF3 switch, and the performance of
the RF1 switch is identical to the RF4 switch.
0
–0.5
–1.0
–1.5
–2.0
RF1 TO RFC CHANNEL
RF2 TO RFC CHANNEL
–2.5
RF1 TO RFC CHANNEL
RF2 TO RFC CHANNEL
–3.0
0 2 4 6
FREQUENCY (GHz)
Figure 10. PCB De-Embedded ADGM1004
Performance
switch insertion loss (network
0
–5
–10
–15
–20
–25
–30
–35
–40
–45
–50
8 10 12 14 16
Insertion Loss and Return Loss
EVAL-ADGM1004SDZ
Figure 11 shows the
measurement results for two channels. The blue trace is the RF2
to RFC switch channel, and the red trace is the RF1 to RFC switch
channel. The performance of the RF2 switch is identical to the
RF3 switch, and the performance of the RF1 switch is identical to
the RF4 switch.
0
–10
–20
–30
–40
–50
–60
–70
–80
0
Figure 11.
Rev. 0 | Page 10 of 18
User Guide
ADGM1004 switch off isolation performance
RF1 TO RFC CHANNEL
RF2 TO RFC CHANNEL
2 4 6
FREQUENCY (GHz)
ADGM1004 Off Isolation Performance
8 10