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Clearcly, any noise will pass straight through to the ADC subsystem, introducing measurement error. You have two choices to mitigate this: SW filtering and HW filtering. Either way around, you need a HW anti-aliasing (low pass) filter following the output.Assume the uC sample rate, Fs, is 100 Hz with 8 bit resolution.
1.what is the value of 1 LSB referred to 3 V ?
2.what is the maximum allowable (Nyquist) frequency FN your system can sample without aliasing ?
3.How much attenuation must your filter have in order to reject frequencies above Fs ? This annenuation is Amin (Hint: it is related to the value of 1 LSB)
4.what order must your filter be to achieve these goals if we pick Fo = Fs/4 (25 Hz) ? (-3db is Fo and your attenuation Amin occurs at Fs)
A full adder is a circuit which adds three bits X, Y, Z together and returns two bits C and S to represent the total as a 2-bit binary number C S. C is the MSB and S is the LSB. For example, if X=1, Y=1, Z=0, the total should be 2, or 102 in binar..
A hybrid communication system uses both AMSC and FM. The information signal a(t) is first AMSC modulated with the subcarrier frequency 1000 Hz. Then it passes through an FM modulator with the carrier frequency 10Mhz.
What is the effect of a frequency difference between the carrier and local oscillator on output quality? Show mathematically.
The average noise power per unit bandwidth measured at the front end of an AM receiver is 10^(-3) watt per Hertz. The modulating wave is sinusoidal, with a carrier power of 80 kilowatts, and a sideband power of 10 kilowatts per sideband.
If the work output is 10kW, find the required heat transfer rate from the high to the low temperature source, and the required heat transfer rate to the low temperature source. What is the themal efficiency of the engine
If the output of the function generator for a sinusoidal waveform is 6 voltage divisions peak to peak and the voltmeter reads 2.12V, find the volts/div scale that is being used. If the frequency is 1 KHz and the peaks are 5 horizontal divisions ap..
150 kVA, 2400/240 V single-phase transformer has the parameters. (a) Determine the equivalent circuit referred to the high-voltage side. (b) Find the primary voltage and voltage regulation when transformer is operating
The peak voltage is 6V and you need to maintain a resolution of 0.034V. Find the number of bits per sample and then calculate the total number of kbps needed in the ADC. Remember that you cannot have a fraction of a bit in a sample.
a generic rectifier is supplied from a 115v 60hz ac source and operates with a firing angel of 30 degrees. For the output voltage of the rectifier find: The dc component The rms value othe ac component
A small circular parabolic reflector, often referred to as dish, is now being advertised as a TV antenna for direct broadcast. Assuming the diameter of the antenna is 1 meter, the frequency of operation is 3 GHz, and its aperture efficiency is 68%
The loop transfer function of a single-loop negative feedback system is: L(s) = Gc(s)G(s) = K(s + 2.5)(s + 3.2) / (s2(s + 1)(s + 10)(s + 30)) This system is called conditionally stable because it is stable only for a range of the gain K
Consider the interval [0,30]: y[n+2] - 0.6y[n+1] - 0.16y[n] = 5x[n+2]. a.) Find zero-state response if the input is x[n]= 4^(-n)u[n] b.) Find zero-state response if the input is x[n]= cos(2npi/6)u[n]
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