Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Synchronous Satellite Link: Consider a 2 GHz link between asynchronous satellite and a ground station on the equator. The bandwidth of the up-link and down-link are the same. The orbital radius of the satellite is 36,000 Km and the radius of the Earth is6,400 Km. The satellite antenna beam must just cover the wholeEarth; its transmitted power is 100 w; and its receiver noisetemperature is 300K (because the antenna is looking at the warmEarth). The ground station antenna diameter is 64 cm; its aperture efficiency is 100%; and its receiver noise temperature is 50 K(because it is looking at the cold sky). Note that RF power isusually specified in dB with respect to a reference. The most common reference is 1 mw, which gives rise to the power unit ofdBm. For example -30 dBm is 1 microwatt.
Find: (a) the beam solid angle of the satellite antenna;
(b) the gain of the satellite antenna in dB;
(c) the power received on theground in dBm;
(d) the bandwidth at which the SNR on the ground is10 dB; and
(e) the power that must be transmitted from the ground(in dBm) so the uplink channel capacity will be the same as that ofthe down link. The channel capacity C =BW*log2(1+SNR).
An ECG has a scalar magnitude of 1 mV on lead II and a scalar magnitude of 0.5 mV on lead III. Calculate the scalar magnitude on lead I.
Determine the phase angle difference between the voltage and current, and whether the voltage leads or lags the current, if (a) V = 240/243 V rms and I = 3/9 A rms; (b) the power factor of the load is 0.55 lagging; (c) the power factor of the load..
A 5-volt intelligence amplitude causes the frequency to change to ± 25 kHz. What will be the carrier frequency variation corresponding to an intelligence amplitude of 10 volts
A toroid is fille with liquid oxygen that has a magnetic susceptibility of 4*10^-3. The toroid has 2000 turns and carries a current of 15 A. Its mean radius is 20 cm, and the radius of its cross section is 8 mm. (a) What is the magnetization
A lossy transmission line at 1GHz has the following characteristics: Z0= 50.0 ohms alpha= 0.01 dB/m, Betta=8 rad/m. Determine R, L, G and C for the line
Discuss how the angle of the incident light affected the solar cell? How could solar cell designs and/or installations be designed to counter this affect?
(a) Using superposition, determine the voltage labeled vx in the circuit represented. (b) To what value should the 2 A source be changed to reduce vx by 10% (c) Verify your answers by performing three dc sweeps in PSpice.
a proton moves through a region containing a uniform electric field given by E=50.0 v/m and a uniform magnetic field B=(0.200+.300+.400)T. Determine the acceleration of the proton when it has a velocity v=10.0m/s
Assume a binary PCM system in which the system ratio of the bit energy to the one-sided noise density at the receiver input is 10 dB. Assume that the probability of error for any value of the independent variable off the scale can be approximated ..
1. A MOD 8 down-counter is holding the count 101 (base-2). What will the cound be after seven clock pulses 2. A MOD 5 and a MOD 20 counter are cascaded. What is the output frequency if the input frequency is 60MHz
A certain three-port network is lossless and reciprocal, and has S13 = S23 and S11 = S22. Show that if port 2 is terminated with a matched load, then port 1 can be matched by placing an appropriate reactance at port 3.
A supplier claims that a transistor has a current gain of 100. 15 transistors are measured, and are found to have a sample mean of 99.5 and a standard deviation of the sample mean 2. a) For what confidence level would the claim be valid
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd