Final answer:
When the effective areas of the antennas and the distance between them are doubled, the maximum capacity of the wireless link increases by a factor of 2.
Step-by-step explanation:
To determine the effect on the maximum capacity of a wireless communication link when the effective areas of the transmitter and receiver antennas, and the distance between them are all doubled, we need to consider the formula for capacity:
C = B * log2(1 + (S/N))
Where C is the capacity, B is the bandwidth, S is the signal power, and N is the noise power.
In this case, we are assuming everything else remains unchanged except for the effective areas of the antennas and the distance.
When the effective areas of the antennas are doubled, the signal power is also doubled, resulting in an increase in the signal-to-noise ratio (S/N).
Similarly, when the distance between the antennas is doubled, the received power is halved, resulting in a decrease in the noise power.
Therefore, the overall effect is an increase in the signal-to-noise ratio (S/N), which leads to an increase in the maximum capacity of the wireless link.
This means that the maximum capacity of the wireless link increases by a factor 2.