You are right Nigel. Reducing the bandwidth is very important in RF communications.
But, based on your knowledge, which is easier to demodulate (and to generate)... a SSB-SC or DSB-SC signal?
Thank you.
Hello Kerim,
Would be intersted in your single PLL circuit used to demodulate DSB-SC.
For either DSB or SSB demodulation the carrier reinsertion determines the quality of the modulating signal and
the processes are usually described mathematically. This is a bit of a pity because electronics should be fun and the transmission and recovery of signals is fairly easy to understand when waveforms are drawn and frequency positions shown ! Anyway this reply may be late in time ?
Mark
Kerim,
My question is, since you are using double frequency, what makes your circuit functionally different from Costas Loop or Squaring Loop? The product of the quadrature and in line VCO outputs of a Costa's loop makes a double frequency sinusoid, same as in a squaring loop, as I understand. Your circuit allows a simpler implementation by bypassing circuit architecture needed to get the double frequency sinusoid in other methods, as I understand it.
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