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What will be the overall noise figure of two cascaded amplifiers?
Wiki User
∙ 10y ago
say,
overall noise figure =f
noise figure of stage1=f1
noise figure of stage2=f2
f=f1+(f2-1)/g1
f1,f2 are in linear scale(not in dB)
g1=gain in stage1
Wiki User
∙ 10y ago
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What is a noise generator used for?
A noise generator produces electrical signals in both audio and video format. These are used for troubleshooting purposes in signal circuits for amplifiers and televisions.
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Microwave and audio parametric amplifiers were used as low-noise amplifiers, to process low-level signals. Therefore their non-linearity probably never occurred in use. In principle, Manley-Rowe theory holds for any frequency combination, and should apply also in optics. I am not aware about the application in optics but it is clearly possible. In optical spectrum (frequencies above IR), however, quantum noise prevails above thermal noise, so low-noise amplification is usually not needed or not possible.
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What is noise filter?
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What is friis equation?
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Why noise of Low Noise Amplifier increases if you want to increase gain of it?
That is the case with all amplifiers. The noise floor is always lifted when the gain is increased.
Define noise figure?
A noise figure is a scale of decibels.
What are the key design parameters for audio amplifiers?
Frequency response, gain, noise, and distortion
What should I know about noise laws before installing car amplifiers?
Local laws may vary. Typicaly noise laws are to not make a lot of noise after 10 pm. You can check your city code.
What is a noise generator used for?
A noise generator produces electrical signals in both audio and video format. These are used for troubleshooting purposes in signal circuits for amplifiers and televisions.
What are factors on which noise temperature is dependent?
hi as we know noise temperature relate to noise figure as ................. T = T0(NF-1) where T0 is referance figure and NF is noise figure NF = (S/N)in --------- (S/N)out S/N is signal to noise ratio
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Noise figure is one of those cases that is crucial, and that calls for experienced care about
What has the author Gerald C Langner written?
Gerald C Langner has written: 'Low-noise audio amplifiers and preamplifier for use with intrinsic thermocouples' -- subject(s): Audio amplifiers, Design and construction
What are the components of an earth station antenna system?
Antenna Low-noise amplifiers (LNAs) or low-noise down-converters High-power amplifiers (HPAs) Signal processing equipment (e.g. down-converters, up-converters, IF amplifiers, modems and codecs) Transmission and signalling equipment at the interface between the terminal and the terrestrial network Supervisory and control equipment Enclosures to protect the equipment from the environment
Does the volume go to "11" on any car amplifiers?
No. Police can pull you over for noise pollution so they tend not to make them do higher.
What has the author Macit Gu nes written?
Macit Gu nes has written: 'The design of low-noise microwave bipolar transistor amplifiers'
