|Feb25-13, 04:53 PM||#1|
Detecting and demodulating a VCO which turns on and off constantly
So I am working on a design project for a research group and their device requires an ultra-low power consumption. Previously, the design engineer before me has TRIED to resolve the issue as follows:
He has used a MAX2750 chip which has a "shutdown mode". He then fed the "shutdown enable" switch with a pulse with modulator. This way, the VCO is turned on and off constantly (the duty cycle is determined by the duty cycle of the pwm). The data is fed into the "tune" pin, but the data is only modulated when the "shutdown mode" is disabled.
My problem is as follows: How do I build a detector which can detect a signal that is constantly turning on and off. Is there any articles about this that someone can refer me to? Or maybe explain how I can design a demodulator that can find a signal like this?
|Feb25-13, 05:57 PM||#2|
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