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If bandwidth of amplifier reduced then thermal noise in amplifier?
Wiki User
∙ 11y ago
thermal noise willbe reduce
Wiki User
∙ 11y ago
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What is Equivalent Noise Bandwidth?
it is nothing but equivalent B.W
How the noise is overcome with the help of positive feedback amplifier?
A: With positive feedback the amplifier is saturated one way or the other in a quiescent state no signal or noise input can effects its output
Why to have a filter before and after a low noise amplifier?
To cut off unwanted frequencies, unwanted frequencies are called noise.
Which factor affect data rate of a link?
the bandwidth and the signal to noise ratio
What type of antenna is used in cellphone for FM?
LNA - Low Noise Amplifier
What factors control the voltage of a Johnson noise source?
It is the bandwidth, the temperature, and the resistance. Look at the link: "Calculation of Noise voltage: Thermal noise".
Advantages of large bandwidth?
A very usefull advantage is the exchange of SNR(signal to noise ratio) with Bandwidth... as on increasing the bandwidth the power required for transmission get reduced to a great extent.. is given by the formula SNR2 ~ (SNR1) B1/B2 AS we can see on increasing the bandwidth the SNR is reduced greatly
Thermal noise power in a conductor is proportional to?
Thermal noise is the noise generated by thermal agitation of electrons in a conductor. The noise power "P" in Watts , is given by "P=KTB". The movement or agitation of atoms in conductors and resistors is somewhat random and determined by the temperature of the conductor or resistor. The random movement of electrons is brought about bythermal agitation of the atoms that tends have increased energy as the temperature rises. This random movement gives rise to electrical voltages within the circuitry known as either, thermal noise, resistor noise, Johnson noise or circuit noise. This noise is existent across the frequency spectrum, meaning the more bandwidth occupied the likelihood of greater exposure.Example:K = Boltsmans Constant = 1.3807x10^-23T = Temperature (Kelvin) = 273K + 20 º CB = Bandwidth (Hz) = 180x10^3Noise Power = K x T x B
What is the thermal noise level of a channel with bandwidth of 10 kHz carrying 1000 watts of power operating at 300 degrees?
-228.6dBW+10log(10000)+10log(300-273)
What does shannon capacity have to do with communications?
It has to do with data communication. It is called the Shannon channel capacity theory where double the bandwidth equals double the highest data rate. This is of course theoretically and does not take into account white noise (thermal noise), impulse noise, attenuation distortion or delay distortion.
What does the shannon capacity have to do with communication?
It has to do with data communication. It is called the Shannon channel capacity theory where double the bandwidth equals double the highest data rate. This is of course theoretically and does not take into account white noise (thermal noise), impulse noise, attenuation distortion or delay distortion.
How does cable noise effect voip?
It will reduced bandwidth internet connection, therefore the voice signal will be transmitted into larger frame rate resulting to a choppy voice or voice echo.
What is the relation between Noise Bandwidth and 3-dB bandwidth in ideal systems?
Bn>B3bn
What is Equivalent Noise Bandwidth?
it is nothing but equivalent B.W
What are the advantages of instrumentation amplifier over differential amplifier?
a differential amplifier helps to increase the CMRR which in turn helps avoid unwanted signals that couple into the input to get propagated. IT also helps to increase the signal to noise ratio. furthermore it provides larger output voltage swings.
How the noise is overcome with the help of positive feedback amplifier?
A: With positive feedback the amplifier is saturated one way or the other in a quiescent state no signal or noise input can effects its output
Which device amplifies the incoming signal and noise?
Amplifier repeater
