XC0450L-03 Datasheet, PDF (3/24 Pages) Anaren Microwave – High Power

Insertion Loss and Power Derating Curves
Model XC0450L-03
Rev E
Insertion Loss Derating:
Power Derating:
The insertion loss, at a given frequency, of a group of
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.
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.
As the mounting interface temperature approaches the
maximum continuous operating temperature, the power
handling decreases to zero.
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