The configuration shown in Fig. P9.29 depicts a satellite repeater with two antennas, one pointed towards the antenna of ground station 1 and the other towards the antenna of ground station 2. All antennas are parabolic dishes, antennas A1 and A4 are each 4m in diameter, antennas A2 and A3 are each 2m in diameter, and the distance between the satellite and each of the ground station is 40000km. Upon receiving the signal by its antenna A2, the satellite transponder boosts the power gain by 80dB and then retransmits the signal to A4. The system operates at 10GHz with Pt=1kW. Determine the received power Pr. Assume all antennas to be lossless.

Respuesta :

The actual physical dimensions of an antenna are determined by its physical length. Examine the 4 m dipole antenna from the Antenna Tool box TM, which operates at a 75 MHz frequency.

What is antenna length?

How far a communication link extends from its maximum range is determined by its signal strength. A single-hop link's signal strength begins at 100% at zero distance and decreases as the distance increases, reaching 0% at the link's maximum range. Since the relationship is non-linear, a Bezier curve must be utilized to represent the relative distance using the keys "0 0 0 0" and "1 1 0 0" in order to ascertain the true value. Identify the separation between the vessels in relation (the result should be between 0.0 and 1.0)

[tex]{\displaystyle 1-{\frac {\text{Distance From Link Point}}{\text{Maximum Range}}}}[/tex]

Use the following substitution in the Bezier curve equation (cubic derivation)

[tex]{\displaystyle -2x^{3}+3x^{2}}{\displaystyle -2x^{3}+3x^{2}} or {\displaystyle (3-2x)x^{2}}{\displaystyle (3-2x)x^{2}}[/tex]

The signal strength of the link at the chosen distance is the outcome. The preceding is accurate for a single-hop.

To learn more about antenna refer to :

https://brainly.com/question/6849706

#SPJ4

ACCESS MORE