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!
Signals in Noise:
Let us now consider a weak information signal that is to be amplified by a noisy amplifier. The signal-to-noise ratio (SNR), usually expressed in decibels, becomes an important system performance measure. It is given by
where the amplified signal power is Pout = GPin in the numerator, which includes source and amplifier noise given by Equation; Pin is the average power of the input signal; and the denominator Nout is the total output noise power given by Equation. Notice that the amplifier's power gainG does not appear in the final result of the SNR. Alarge SNR indicates that the signal is strong enough to mask the noise and possibly make the noise inconsequential. For example, with SNR ≥ 20 dB, intelligible voice communication results; otherwise, "static" in the voice signal; with SNR ≥ 50 dB, noisefree television image results; otherwise, "snowy" TV picture. For a good system performance, Equation suggests a large value of Pin and/or small values for T + Ta and B. However, one should be reminded here that the amplifier's bandwidth B should not be less than the signal bandwidth W. That simply means that with large-bandwidth signals, one would expect noise to be more troublesome.
1555_Use delta-wye transformation for network reduction.png what is the solution to this particular problem?
An automotive manufacturing company is planning to bring out a new model of a compact car for the Indian market. One of the critical tasks is choosing an engine with a proper engin
Q. The parameters of a BJT are given by α = 0.98, I CBO = 90 nA, and i C = 7.5 mA. Find β, iB, and iE.
Explain Thermoplastic materials. Thermoplastic materials: The properties of such plastic materials do not change considerably when they are melted and after that cooled and s
Q. A three-phase ac motor, used to drive a draft fan, is connected to a 60-Hz voltage supply. At noload, the speed is 1188 r/min; at full load, the speed drops to 1128 r/min. (a
how fet transistor works in self bias
EXPLAIN UJT WITH ALL SUBTOPICS CONSISTS
Q. What do you mean by Load factor? The two components of electric service are demand and energy. Demand is the maximum level of real power which the electric utility must supp
what is a transformer?
Q. How to convert Decimal to Binary number? To convert the decimal to binary is slightly more difficult. There are two procedures (Methods) that may be used to convert from dec
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: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd