User Guide
UG-1462
Rev. 0 | Page 11 of 18
NETWORK ANALYZER CALIBRATION PROCEDURE
The maximum value of the network analyzer frequency sweep for
the EVAL-ADGM1004SDZ PCB can be up to 16 GHz. Assuming
the user has a set of manual calibration standards or an electric
calibration type unit to perform a short load open through
(SLOT) calibration of the network analyzer, use the following
procedure in conjunction with the EVAL-ADGM1004SDZ to
perform two-port measurements of the
1.
Perform a full, two-port standard SLOT calibration of the
network analyzer.
2.
Connect the CALIBRATION THRU calibration
transmission line (Connector RF5 and Connector RF6) to
the analyzer and measure the insertion loss (S(2,1)).
3.
Save the measured data to the network analyzer memory
for later use.
4.
Configure the EVAL-ADGM1004SDZ links, and power up
the EVAL-ADGM1004SDZ with a 3.3 V dc power supply.
5.
Connect the network analyzer to the desired MEMS switch RF
connectors and apply the external control signals as needed.
6.
Measure the complete insertion loss of the EVAL-
ADGM1004SDZ. Include the insertion loss of the MEMS
switch and test fixture (PCB calibration transmission lines
and RF connectors).
7.
De-embed the PCB losses from the complete EVAL-
ADGM1004SDZ measurement using the data saved from
Step 3 and the measured data from Step 6. Because the
extraction method is dependent on the network analyzer,
consult the network analyzer user manual before performing
the extraction. Typically, the divide function divides the
complete S(2,1) measurement data by the CALIBRATION
THRU calibration transmission line S(2,1) data stored in
memory.
8.
Use the network analyzer port extension function to de-
embed the phase offset introduced by the PCB calibration
transmission lines. The port extension method uses time
delay offset values to correct for phase. To switch the pin
path equal to the electrical length of the calibration
transmission line divided by two, enter the time delay
values into the port extension menu on the network
analyzer for each RF edged connector.
