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Hi,
I am new to genetic algorithms. I have studied only a few very simple examples to learn about the basics of GA. I would appreciate if anyone can give me some hints what technique I can use for the optimization problem given in the attached pdf. Is there any reference textbook that can help...
I think you are making a mistake regarding the index of the q vector. For i=0 you have written a separate code using the if statement (this corresponds to the 45 degree angle). When the loop is executed for i=1, the elseif part of the code will be executed but since you are using q(1), again the...
This is interesting. Have you seen any reference using this method?
By the way, I was making a mistake in my calculations, with the CORDIC multiplier, we only need to scale z0 to the appropriate range or use a different starting index as you said. No other limitations regarding the x and y.
The...
Hi CCNezin,
I can add this to your explanation that the CORDIC multiplier requires a sufficiently small z0 because after n iterations we have approximated z0 with a sum of powers of two. This means that the maximum z0 is 2^0 + 2^(-1) + 2^(-2) + 2^(-3) + ..., this is about 1.5.
But what about...
Hi CCNezin,
Thanks for replying.
Your explanation seems quite reasonable but, with this explanation, we never need to set the initial value of y to zero (y0=0) neither we need to scale x0 and z0 to less than or equal to 1. I have tested a few numerical examples and apparently these are the...
Hi,
I am looking for the details and proof of the CORDIC multiplier. I found a paper and a pdf which summarize the algorithms of the elementary functions but the linear mode of CORDIC is only briefly discussed. They mention that for multiplying x0 by z0 (actually to obtain y0 + x0 * z0) we need...
Hi,
In the common-gate structure, the source voltage is determined by a voltage source, Vx. So, the transistor's gm will produce a current equal to gm * (0 - Vx). This current varies with Vx. However, the total current passing through the drain is constant because of the current source in the...
You try to divide the critical path into M portions where each of these M portions have almost the same delay. In pipelining, you need to allow the combinational circuit between two successive flip-flops to operate and calculate the result, then, with clock edge, the calculated data is stored in...
Assume that p1 and p2 are the roots of the denominator.
(s+p1)*(s+p2) = s^2 + (p1 + p2)*s + p1*p2
Multiply the above by b ( you can because the roots will not change) and equate with the denominator of the fraction.
If you assume that the poles are -p1 and -p2 then p1+p2 = -a/b and p1 * p2 = 1/b. Since a Miller capacitor splits the poles, we can assume that one of the poles happens at a much higher frequency than the other one. Assume that p1 << p2, then, p1 + p2 will be approximately p2 and we can find the...
Hi niteshtripathi,
If you apply an input current to the loop filter (current because the output of charge pump is current) and assume the voltage on the C2 as the output of the filter, then the filter will have a pole at the origin, a zero at z1=1/(r1 * c1) and another pole at p2 = 1/( (r1 +...
I think the DC bias of the op-amp is not correct. While you set the DC of terminal 3 to be zero, the DC of terminal 4 is set by that of the op-amp output. Terminals 3 and 4 must have the same DC voltage.
Pass band can be calculated from the desired center frequency and bandwidth.
The stop band, center frequency, bandwidth and the required attenuation at the pass band and stop band are all determined by the application. Some applications may require much more attenuation in the stop band some...
Assume that you apply a current source Iin to a parallel RLC, at the resonant frequency, the voltage across the RLC will be Iin * R. The value of R affects the quality factor and the gain of the resonator.
In your experiment, the signal generator may have loading effects, and, lower the quality...
You can calculate it just the way you calculate the phase response of any arbitrary transfer function (put j*omega instead of the s from Laplace transform, and calculate the phase). I think the only thing that you can expect ( in general and without calculation ) from the phase response of a...
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