Recent content by idmond dantes

why total internal reflection happens only when a beam of light travels from a medium with higher index of refraction to a medium with lower index of refraction and not the other way around (i.e from a medium with lower index of refraction to a medium with a higher one)?

do you think that there are out there some analog dividers that can divide by functions like (cosine) as there exist analog dividers that can divide by arithmetic numbers because one answer I got to my question above was that 'there no analog dividers that can divide by a function like cosine...

Why the noise will be related the sampling frequency, rather than the base band frequencies? why you think this would happen?

why there will be noise at only the carrier frequency and it's harmonics, assuming that the noise added by the channel is a white noise?

I didn't mean the divider to be simple, literally. It just occurred to mean that since the multiplication scheme requires multiplication and then filtering while the division scheme requires only one operation, i.e division, it would be much simpler in Implementation. Clearly I was wrong about that.

by "them", you mean the members or the professors?

In this case, we could increase our signal power to compensate for the amplified noise caused by dividing by a small number. I believe that this whole thing "demodulation by division" actually does more harm than good. After all, what we gained from this : 1- we complicated our AM...

well, we can still go around the "divide by zero" issue if we did all the demodulation process with digital signal processing and add some piece of code that checks for the case when the cosine function is zero then output some finite nonzero value.

yes, you're right about that because I always get this answer that you cannot do an analog circuit that can divide by a function may be a digital one would be feasible but it would be a more complicated solution than the demodulation by multiplying scheme. but why with digital, you're saying it...

yes, jsgruszynski I know these dividers(used in PLLs and RF synthesizers) are called arithmetic dividers which divide by a number and my demodulation scheme need a divider that can divide by a function like the sinusoid (cosine function). Is such a "divide by function" divider possible to...

Hey all, "In AM synchronous demodulation, Why we don't divide m(t)coswt by cos(wt) instead of multiplying by cos(wt), since this can be easily implemented by a simple divider circuit?" If it's all about thinking mathematically, then it seems like it's more intuitive and a whole lot easier if we...