a. A 9 GHz, 100 km LOS, Link uses 3.0 axisymmetric paraboloidal reflectors for both transmitting and receiving antennas. The ohmic and aperture efficiencies of the antennas are 97 % and 80 % respectively and both antennas are mounted at a height of 30m. The transmitter power is 0 dBw. Find the received power for free space conditions.
a. A 9 GHz, 100 km LOS, Link uses 3.0 axisymmetric paraboloidal reflectors for both transmitting and receiving antennas. The ohmic and aperture efficiencies of the antennas are 97 % and 80 % respectively and both antennas are mounted at a height of 30m. The transmitter power is 0 dBw. Find the received power for free space conditions.
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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Parts (a), (b) and (c) Please.
Transcribed Image Text:Question 2
a. A 9 GHz, 100 km LOS, Link uses 3.0 axisymmetric paraboloidal reflectors
wwww
for both transmitting and receiving antennas. The ohmic and aperture
efficiencies of the antennas are 97 % and 80 % respectively and both
antennas are mounted at a height of 30m. The transmitter power is 0 dBw.
Find the received
power
for free
space
conditions.
b. Design a point-to-point link connecting LANS in separate buildings across a
freeway. The distance is 0.1km. The frequency used is 2.4GHZ (unlicensed
spectrum for WiFi). The maximum transmit power of the access point is
24DBM. The minimum received signal strength (RSS) for 11Mbps
operation is -80dBm. Will the transmit power be adequate for
communication?
c. A paraboloidal antenna working at 2 GHz and having a radius of 4m is
required to achieve a gain of 35 dB. Find the necessary efficiency.
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