SIGNALS, NOISE, AND RECEPTIONTHERMAL NOISETHE RECEPTION PROBLEMSTRATEGIESRADIO RECEIVER SPECIFICATIONSORIGINSSUPERHETERODYNE RECEIVERSRECEIVER PERFORMANCE FACTORSUNITS OF MEASUREdBmdBmVdBμVRULE OF THUMB: To convert dBμV to dBm, subtract 113 dB; le., 100 dBμV = (100 dBμV-113 dB) = −13 dBm.NOISESIGNAL-TO-NOISE RATIO (SNR OR Sn)NOISE FACTOR, NOISE FIGURE, AND NOISE TEMPERATURENoise Factor (Fn)Noise Temperature (Te)NOISE IN CASCADE AMPLIFIERSRECEIVER NOISE FLOORSTATIC MEASURES OF RECEIVER PERFORMANCESENSITIVITYSELECTIVITYIF BandwidthIF Passband Shape FactorSTABILITYAGC RANGE AND THRESHOLDDYNAMIC PERFORMANCEINTERMODULATION PRODUCTS−1 dB COMPRESSION POINTTHIRD-ORDER INTERCEPT POINTDYNAMIC RANGEBLOCKINGCROSS-MODULATIONRECIPROCAL MIXINGIF NOTCH REJECTIONINTERNAL SPURII