Question

As a communications system engineer, you are asked to setup a communication system to serve a distance of 100m using an access point transmitting signals with power 20dBm at the frequency 2.4GHz. The antennas used at the transmitter and receiver side have the gains shown in the picture below. The coaxial cables used to interface the systems to the antennas have losses shown in the picture below What is the received signal power in dBm at the input of the Rx radio receiver (point A)? What is the Rx radio sensitivity needed to have a margin of 10dB at the input of the Rx radio receiver (point A)? Assuming 2 Rx 6dB and bandwidth 5MHz . radio receiver with noise figure Receiveing antenna operating at 290 K find the signal to noise ratio at the receiving antenna terminals (point B) antenna antenna point A +10 dBi +14 dBi +20 dBm Tx Rx radio cable cable radio point B -2 dB -2 dB

Answer 1

Si mal Pocwer at point A, Py Pe CL cabla Joss d 10 daỉ gain @wニ Reci!ve ankAn a gain fo 2.4x10 - 80 de LOo P 2-30 4a3068 d6 6 dB NF : noise figure 23 anle una hewrwa tun: 290k 63.01 dg ..SNfR ,' SNA: -68-6 t204-66.99