Consider a diode mixer with a conversion loss of 5 dB and a noise figure of 4 dB, and a FET mixer with conversion gain of 3 dB and a noise figure of 8 dB. If each of these mixers is followed by an IF amplifier having a gain of 30 dB and a noise figure FA, as shown below, calculate and plot the overall noise figure for both amplifier-mixer configurations for FA = 0-10 dB.
