During the measurement, power signal from sensor reading is 10 dB (decibels), and the noise power is 2 dB. Calculate S/N ratio. If root mean square signal from sensor is 20mV, estimate root mean square signal from noise. a.

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Q.3
During the measurement, power signal from sensor reading is 10 dB (decibels), and
the noise power is 2 dB. Calculate S/N ratio. If root mean square signal from sensor
is 20mV, estimate root mean square signal from noise.
а.
b.
Figure Q.3b shown three types of noise.
i. Name these type of signals.
ii. Provide method to reduce these noise.
a)
b)
1.8
1.6
14
0.8
0.4
0.2
Amplitude time domain of
waveform (Hz)
Frequency (Hz)
(c)
100
Bandwidth
10
100 kHE
0.1
100 HE
0.01
L001
10
100
1.000
Resistance (2)
Figure Q.3b
A system receiver has a resistance 10 k2 and 20 k2 in serial. Calculate the root mean
square thermal noise voltage for the operating temperature 32°C, Boltzmann's
constant is 1.38x10-23 and frequency bandwidth is 10 MHz.
с.
Amplitude
Transcribed Image Text:Q.3 During the measurement, power signal from sensor reading is 10 dB (decibels), and the noise power is 2 dB. Calculate S/N ratio. If root mean square signal from sensor is 20mV, estimate root mean square signal from noise. а. b. Figure Q.3b shown three types of noise. i. Name these type of signals. ii. Provide method to reduce these noise. a) b) 1.8 1.6 14 0.8 0.4 0.2 Amplitude time domain of waveform (Hz) Frequency (Hz) (c) 100 Bandwidth 10 100 kHE 0.1 100 HE 0.01 L001 10 100 1.000 Resistance (2) Figure Q.3b A system receiver has a resistance 10 k2 and 20 k2 in serial. Calculate the root mean square thermal noise voltage for the operating temperature 32°C, Boltzmann's constant is 1.38x10-23 and frequency bandwidth is 10 MHz. с. Amplitude
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