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in the circuit of fig 867 each op amp provides a gain of 500 apply a 10-mhz sinusoid at the input and plot the output
an inverting amplifier incorporates an op amp whose frequency response is given by eq 884 determine the transfer
a student attempts to construct a non-inverting logarithmic amplifier as illustrated in fig 859 describe the operation
determine the small-signal voltage gain of the logarithmic amplifier depicted in fig 824 by differentiating both sides
while constructing a cascode stage a student adventurously swaps the collector and base terminals of the degeneration
a filter has frequency-response functiona find the output y t for wb find the output y t for w gt bc in which case does
exercise 1-suppose that 73 61 38 84 69 71 53 82 49 and 58 are 10 observations from a distribution not highly skewed
an fm modulator has outputa sketch the phase deviation in radiansb sketch the frequency deviation in hertzc determine
an fm modulator has fc 2000 hz and fda what is the modulation indexb sketch approximately to scale the magnitude
an audio signal has a bandwidth of 12 khz the maximum value of m t is 6 v this signal frequency modulates a carrier
an fm modulator is followed by an ideal band pass filter having a center frequency of 500 hz and a bandwidth of 70 hz
a sinusoidal message signal has a frequency of 150 hz this signal is the input to an fm modulator with an index of 10
a narrowband fm signal has a carrier frequency of 110 khz and a deviation ratio of 005 the modulation bandwidth is 10
given the following channel pulse-response samplesa find the tap coefficients for a three-tap zero forcing equalizerb
a show by a suitable sketch that the triangular spectrum of figure 48a satisfies nyquists pulse shaping criterionb find
the random variable x has a probability density function uniform in the range 0 le x le 2 and zero elsewhere the
compare the q-function and the approximation to it for large arguments given by 5202 by plotting both expressions on a
two gaussian random variables x and y are independent their respective means are 5 and 3 and their respective variances
two jointly gaussian random variables x and y have means of 1 and 2 and variances of 3 and 2 respectively their
two jointly gaussian zero-mean random variables x and y have respective variances of 3 and 4 and correlation
determine the cdf for a gaussian random variable of mean m and variance sigma2 express in terms of the q-function plot
a second-order butterworth filter has 3-db bandwidth of 500 hz determine the unit impulse response of the filter and
if five cards are drawn without replacement from an ordinary deck of cards what is the probability thata three kings
two events a and b have marginal probabilities p a 02 and p b 05 respectively their joint probability is p acapb 04a
derive an expression for the detection gain of a dsb system for the case in which the bandwidth of the band pass