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Delta sigma modulator
Hi all,
Could anyone explain in simple words the principles of delta sigma modulator, their advantages.
Any stuff related to this topic is welcomed.
Thanks in advance.
Hi all,
could you please explain what are the main differences between ferrite and inductor? I assume that their behabiour over frequency is different.
When and why must we use a ferrite instead of a coil?
Thanks for your answers.
vco-pulling
Hi
If you're working in Direct conversion, the power amplifier can trouble your VCO depending on its position on your board and it's frequency. try shieldings to see if it's a radiated or conducted issue. If conducted, look carefully your lay-out.
hope it helps.
Rayan
Hi
As Katarina told yo. When you switch on your mobile phone, it makes power measurements on cells around it. If it detects nothing, there's no RACCH emitted by your phone... but frequency synthesizer of your mobile still working to try to find a BS.
rayan
Hi,
your problem seems to come from your PA or your antenna switch. But,verify first that the different signals driven your PA (ramp....)and your antenna switch are Ok
rayan ;-)
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