Assume we have a constant spectral power density of S W/m2-nm. Using this and the equation for Spectral Responsivity derive an equation that yields the short circuit current density as a function of band gap.
Assume we have a constant spectral power density of S W/m2-nm. Using this and the equation...
a power * A random process X(t) has Spectral density given by Sxx (w) = Su-we luk 6 Otherwise . Determine the average power.
Power Spectral Density of Signal A signal s(t) can be expressed as the following equation: L-1 where L is a positive integer. {An}n=0 are independent and identically distributed (i.i.d.) discrete random variables. The probability mass function (PMF) of An is An() 0 otherwise, where A is a positive constant in volt. To is a uniformly distributed random variable with probability density function (PDF) defined by 0. otherwise. L-1 To and {An}n=d are independent. The signal p(t) is a pulse and...
2. (30 points) Let X(t) be a wide-sense stationary (WSS) random signal with power spectral density S(f) = 1011(f/200), and let y(t) be a random process defined by Y(t) = 10 cos(2000nt + 1) where is a uniformly distributed random variable in the interval [ 027]. Assume that X(t) and Y(t) are independent. (a) Derive the mean and autocorrelation function of Y(t). Is Y(t) a WSS process? Why? (b) Define a random signal Z(t) = X(t)Y(t). Determine and sketch the...
Assume a required bit rate of 5 Mbits/s, a noise power spectral density N 4 x 101 Watts/Hz, and binary modulation. With a target bit error probability of 2 X 10, how much signal power is required if the following modulation techniques are used? a.) (5 pts) PSK b.) (5 pts) PAM c.) (5 pts) FSK
Let the production function be as follow: 2. L0.7 K.3 q(L, K) Also assume w 2 and r=4 Find out if we have increasing, decreasing or constant return to scale. a. Derive the long-run cost function. TC(q) b. Derive the average cost curve. Is it increasing or decreasing or constant in q? С. Let the production function be as follow: 3. q(L, K) LK3 Also assume w-4 and r=3 Find out if we have increasing, decreasing or constant return to...
Find the power of the signal conponent of a P is the Fourice t of s,(0)(2.5 points) edf,where S.f density of pu nose (2.5 points) . Consider the RL circuit shown below. Assume that R-10 and L-IN. Hint : Use Parseval's relationship if necessary i(t) e. What is the input signal-o-oise (SNR,ratio, defined as: SNR, 1olog..C)as polnts d. Find the output power spectral density of noise N,00 N,( HP, where HU) is the frequency response of the circuit, and N,(n)...
6) Assume a wire of constant area A 0.01 m2 that is made up of two lossy dielectrics. Both dielectrics have the same &-2 but have different conductivities, σι = 2x104 Sm and σ2 = 4 x 104 S/m. A current-0.01 A flows in the wire and given that the wire area is constant there is a constant current density in wire. o, a) What are the electric fields in dielectric #1 and dielectric #2? b) What is the charge...
Assume a planet with a solar constant S=2000 W/m2, an albedo α=0.4 and radius of 3,000 km. What is the planet’s surface temperature? What would happen to the temperature if the planet’s radius doubles?
Problem 1 Using what we have leamed in chapter 1, derive, for a semiconductor, the expressions of The total current density Conductivity - Problem 2 Consider Germanium sample with the following characteristics the electron and hole mobility for Ge is 0.39 and 0.19 m2N.s The electron and hole effectives masses are 0.56me and 0.4 me The energy gap is 0.67 eV at T-27°C 1) 2) Find the intrinsic carrier concentration for Ge What is the resistivity of the Ge sample...
i. l e blank(s). A gap suggest two-word in your answer Drift current in semiconductors is due to electric [20] tield. Carriers in the band are referred to as statistics is applied to electrons in The semiconductors. The position and principle states that we cannot simultaneously determine the of electrons. Vy is a . while w is a number and Current in the conduction is due to the flow of Extrinsic semiconductors are vii. viii. The wave function in Schrodinger's...