GIVEN: In the far-field a transmit antenna and receive antenna are separated by a distance of 500 m in free space. The transmitter

power system setting is 13 dBm at 20 GHz. The received power system measurement 1 x 10³ W at 20 GHz.

Complete problem 2 using the given information above.

2. (25 points). If the transmit antenna and receive antenna are identical with a radiation efficiency of 30%, polarization-

matched antennas, matched to their transmission lines for zero reflections, and aligned for maximum radiation between

them, select using Canvas the answer (i.e. A, B, C, or D) below that best represents the directivity of the receive

antenna?

A. 20 dB

C. 15 dB

B. 300 dB

D. 30 dB