(b) A satellite at an altitude of 1000km transmits a signal to a groundstation directly below it. The satellite transmits 80W into an antennahaving a gain of 7 dBi, and the ground station's antenna has a gain of12 dBi. The centre frequency of the transmission is 3GHZ.I.Define "Free space path loss"I.Calculate the free space path loss and the power delivered tothe receiver(c) A 15km radio link has antenna heights of 25m and 5m respectively.This arrangement just barely receives the minimum required power.I.Determine whether it is reasonable to analyse this scenariousing the general two ray propagation method.I.What must the 25m antenna height be changed to in order toachieve the minimum required power at a range of 30km.(Show clearly how you obtained your answer)

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Answered: A satellite at an altitude of 1000km…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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2. A system is being designed to use a 30 GHZ link with a 300HZ bandwidth to receive signals from a navigation spacecraft at an altitude of 20,200km, with a maximum slant range of 24,700km. The satellite transmitter-antenna gain is 25db and the handheld unit receiver gain is 5db. The transmitter power will be 18W. If the handheld receiver temperature is 500K, will this be an effective link (S/N at least 10 or 10db)? If not, what could you change to improve the link?
A microwave link includes two sites that are 10 km apart and uses a center frequency of 9 GHz. On either transmitter or receiver side, a 100-m transmission line that has an attenuation per unit length of 0.01 dB/m is connected to an amplifier and a parabolic reflector antenna. Other losses caused by connectors and insertions incurred on one side amounts to 3 dB. Antenna has a power gain of 20 dB. If the output of the transmitter amplifier is 30 dBm, what is the received signal level (in dBm) at the input of the receiver amplifier?
2.) The power density is 4 mW/m² at some distance R from an isotropic antenna. The isotropic antenna is replaced with a different antenna and the power density measured is now 60 mW/m² at the same distance R. What is the gain (in dB) of the second antenna? 3.) The received power at an airplane is calculated as Pr=-43 dBm at a range of 13 miles using free-space propagation. Determine the received power (in dBm) at a range of 52 miles.
Use the free space model and the following equation to compute the received power in dBm for a 900 MHz signal travelling to a receiver 200 meters away. Assume the transmitter antenna gain is 10 dB and the receiver antenna gain is 3 dB. Assume the power at the transmitter is 22 dBm. (Note: Pr dBm is the received power in dBm, Pt dBm is the transmitted power in dBm, PL dB is the free space path loss in dB, Gt dB and Gr dB are the antennas gains at the transmitter and receiver, expressed in dB, respectively) state the answer in the correct units and show all your computations to receive credit
wireless communication For an earth station receiver with an equivalent input temperature of 200 K, a noise bandwidthof 20 MHz, a receive antenna gain of 50 dB, and a carrier frequency of 12 GHz, determine thefollowing: G/Te, N0, and N.
A geo-synchronous satellite is transmitting a TV signal to an earth based station at a distance of 40,000km. Assume that the dish antennas of the satellite and the earth station have the diameter of 0.5m and 5m, and aperture efficiency of 60%. If the satellite’s transmitted power is 6W and the downlink frequency is 4 GHz, calculate the antenna gain in dB and the amount of received power.
The transmit power is 20 dB, the transmit antenna gain is 2 (in linear scale), the receiveantenna gain is 3 (in linear scale), the carrier frequency is 300 kHz, the transmit antenna heightis 10 meters, the receive antenna height is 1 meter, the distance between the transmitter andreceiver is 1 km, L = 1. The transmission environment is air (the path loss exponent is 2). Usethe free space propagation model.a. Calculate the receive power in dBm.b. Calculate the path loss in dB.
A 10 GHz Microwave link is designed to connect two points which has 10 km distance. The transmitter effective radiated power is 50 dBW. Calculate the received signal power, PR , and voltage, VR , if the receiving antenna gain is 10 dB and the input impedance is 50 ohms.
The radar antenna, which is used as both transmitter and receiver, is at the operating frequency of 5GHz. It has a gain of 150 (dimensionless). The antenna emits 100kW of power and 3m2 at 1km for maximum directional radiation and reception a radar cross-sectional area of is aligned with the target. The received signal is polarization compatible with the emitted signal.Find the received power.
1.) A communication system is defined below:Transmitter Power: = 45 dBm; Frequency = 1 GHzTransmit Antenna: Gain = 12 dB, height above ground = 50 meters;Receive Antenna: Gain = 6 dB, height above ground= 2.5 metersFind the received power (in dBm) at a range of 4 kilometers:a. using the free-space range equation b. using the near-earth range equation Using the results of the calculations in a & b above: c. determine the best prediction of the received power (in dBm) at the 4 kilometer range. 2.) A transmitter operating at 80 MHz has an output power of 1.5 kW which is fed to an antenna with a gain of 20 dB. Determine the "keep-out" distance (in meters) required to meet the safety standard. clear and easy to understand. Thanks
AGILA satellite is located 36000 km above the earth’s surface. Assuming free space condition, what is the path loss in dB of the signal if the operating frequency is 3 GHz. (Use two decimal places for the final answer)
You have an FSK transmitter using a mark frequency of 500 kHz, a space frequency of 380 kHz, and sending 10 kbps. A) How much bandwidth do you need for your transmission? B) if you are to design the system with continuous phase shift keying in mind, what would be the value of the space frequency if the mark frequency remains the same?

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