App. 3A: Signal Strength (cont.) The decibel can measure voltage differences. –Assume P is the power dissipated across a resistance R, and V is the vo
{"Image DocumentName": "App. 3A: Signal Strength (cont.)", "Image ImageDescription": "The decibel can measure voltage differences. Assume P is the power dissipated across a resistance R, and V is the voltage across R. I=V/R, where I is the electrical current. P = I x V = V/R x V = V2/R. Pout/Pin = (Vout/Vin)2. Now log (X2)= 2 log (X). Thus, GdB= 20 x log10 (Vout/Vin).", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}