Question 57 A spacecraft in 550km circular orbit passes directly over a ground station. The ground station uses a circular parabolic antenna with a diameter of 5m and perfect efficiency. The spacecraft is broadcasting at 12W at 825MHz using an omni antenna. Find the received signal strength in dBW. Use c=299792458m/s

Question 57 A spacecraft in 550km circular orbit passes directly over a ground station. The ground station uses a circular parabolic antenna with a diameter of 5m and perfect efficiency. The spacecraft is broadcasting at 12W at 825MHz using an omni antenna. Find the received signal strength in dBW. Use c=299792458m/s

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...

See similar textbooks

Similar questions

Q. (a)Two nicols are first crossed and then one of them is rotated through 600. Calculate the percentage of incident light transmitted. Q. (b)Two nicols are oriented with their principal plane making an angle of 600.What percentage of incident unpolarized light will pass through the system? Q.The signal retrieved in an optical fiber reduces at its output to one-tenth of its input power. What is the overall attenuation? What shall be the power at output in a fiber having loss3 db/km?
A 10 MHz carrier is frequency modulated by a sinusoidal signal of 500 Hz frequency and the maximum frequency deviation is 50 KHz. What will be the bandwidth of the FM signal?
Explain through equations what happen if there is a phase error θc between the transmitted ASK signal and local (replica) carrier signal in coherent ASK demodulator. Then what happen if θc=90o
Sketch/Draw the following: a. 100% modulation trapezoidal pattern b. Negative Carrier Shift c. Envelope of a square wave modulating a sinusoidal carrier
What are the various feeling mechanism used in reflector antennas, and what is sployer? Determine the diameter of the mouth and HPBW of a parabole refectur with a power gain of 300 and operating frequency is 2 GHz
JI - 1 lal ahi X Meet - wwi-swim-sWZ DQLSchQF608hEnQEkoXPxD96ltxqUdhM3leAVMtKKDCKdBTVZSxw/formResponse Part 3: Short Problems bla 4 What is the instantaneous frequency (in Hertz) of the following radar FM signal at t = 1sec. ? x(t) = 12cos(20nt + nt?) 10 Hz 10.5 Hz None of the mentioned answers. 20 Hz 11 Hz 20.5 Hz 12 Hz O 21 Hz 國
The period of this signal is about------ ms (milliseconds). The oscilloscope range selector determines the scale on the screen. That means number of volts per line for amplitude vertical (v/div) and the number of milliseconds per line for time horizontally (ms/div).
This subject is antenna and wave propagation of ece pls solve neatly and faster thanks
I hope to write a simple summary so that I can save it because I have exams Difference between Hertz Antennas (half-wave) and Marconi (quarter-wave) Antennas.
Problem 3. A receiver front end has a noise figure of 10 dB and a gain of 60 dB and a bandwidth of 12 MHz. The input signal power is 10-11 W. The antenna temperature is 180° K. Find Te, Ts, Nout, SNRin and SNRout. You may use To=290° K and Boltzmann's constant equals 1.38 x 10-23 J/K.
What is the minimum length of antenna required transmit a radio signal of frequency 20 MHz? a. 3.75 m O b. 7.5 m O c. 5.75 m O d. 2 m
1-31 A satellite communication system is illustrated in the fol- lowing figure. The uplink portion will be analyzed in this problem. The output power of the ground transmitter is 200 W. This power level is effectively increased in the di- rection of transmission by the ground antenna, which has a gain of 40 dB. The transmitted signal is attenuated by a path loss of 200 dB. The receiver antenna gain is 20 dB. (a) Determine the received signal power in femtowatts and in dBf. (b) If the total noise level at the input to the satellite receiver is 8 dBf, determine the received signal- to-noise ratio in dB. Geostationary Communication Satellite Transmitting Earth Station 421 Receiving Earth Station