b) Given the following transmission characteristics of a free-space radio transmission system: Transmitter power out = 40 dBm Transmission line loss = 3 dB Free-space path loss = 50 dB Efficiency = 50% Directivity = 1 Compute (in dBm) the: i) antenna input power (Pin), ii) antenna radiated power (Prad), iii) Effective Isotropic Radiated Power (EIRP) and iv) Receiver captured power (Pap). c) The power radiated by an antenna is 400 W, with 4 A Irms and 70 effective antenna resistance. Calculate the: i) antenna radiation resistance, Rr, ii) antenna efficiency, and iii) total input power into the antenna, Pin-

b) Given the following transmission characteristics of a free-space radio transmission system: Transmitter power out = 40 dBm Transmission line loss = 3 dB Free-space path loss = 50 dB Efficiency = 50% Directivity = 1 Compute (in dBm) the: i) antenna input power (Pin), ii) antenna radiated power (Prad), iii) Effective Isotropic Radiated Power (EIRP) and iv) Receiver captured power (Pap). c) The power radiated by an antenna is 400 W, with 4 A Irms and 70 effective antenna resistance. Calculate the: i) antenna radiation resistance, Rr, ii) antenna efficiency, and iii) total input power into the antenna, Pin-

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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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
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. answer should be a) -41.15 b) -39.1 c.) near FS
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