Suppose a transmitter produces 50 W of power.

a. Express the transmit power in units of dBm and dBW.

b. If the transmitter’s power is applied to a unity gain antenna with a 900 MHz carrier frequency, what is the received power in dBm at a free space distance of 100 m?

c. Repeat

(b) for a distance of 10 km.

d. Repeat

(c) but assume a receiver antenna gain of 2.