Model XC0900A-20
Rev F
Insertion Loss and Power Derating Curves
Typical Insertion Loss Derating Curve for XC0900A-20
Power Derating Curve for XC0900A-20
power handling at 894MHz
0
275
250
225
200
175
150
125
100
75
typical insertion loss (f=894MHz)
typical insertion loss (f=960MHz)
typical insertion loss (f=1000MHz)
power handling at 960MHz
power handling at 1000MHz
-0.02
-0.04
-0.06
-0.08
-0.1
-0.12
-0.14
-0.16
-0.18
-0.2
50
25
0
-100
-50
0
50
100
150
200
250
300
350
0
25
50
75
100 125 150 175 200 225 250 275 300
Base Plate Temperature (ºC)
Temperature of the Part (ºC)
Insertion Loss Derating:
Power Derating:
The insertion loss, at a given frequency, of a group of The power handling and corresponding power derating
plots are a function of the thermal resistance, mounting
surface temperature (base plate temperature),
maximum continuous operating temperature of the
coupler, and the thermal insertion loss. The thermal
insertion loss is defined in the Power Handling section of
the data sheet.
couplers is measured at 25°C and then averaged. The
measurements are performed under small signal
conditions (i.e. using a Vector Network Analyzer). The
process is repeated at 95°C, 150°C, and 200°C. A best-
fit line for the measured data is computed and then
plotted from -55°C to 300°C.
As the mounting interface temperature approaches the
maximum continuous operating temperature, the power
handling decreases to zero.
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