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Heating may be the reason...

Thermal noise is a very real phenomena. Just start poking around microwave link design. So perhaps dividing the power dissipation across two resistors means a greater surface area to radiate heat and thus the thermal noise is lower.

Of course now you have new problems versus a single resistor depending on the application. More exposed antenna area, more capacitance, etc. Again depending on the application.

Engineering is always a compromise, no exceptions ever!



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  • Heating may be the reason... - gusser 10:56:32 03/14/12 (0)

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