Time signal receiver for use with electronic watches, heating controllers, PCs, etc. receives frequency shift key modulated time signals and is configured as an ASIC for minimum power consumption and maximum compactness

摘要

Receiver for time signals receives frequency shift key (FSK) modulated time signals from a central source, such as the European radio control center. Receiver for an FSK modulated time signal comprises an antenna circuit, an amplifier, an LC resonance circuit, a buffer amplifier, a mixer, a first sample and hold unit, a mirror frequency filter, a second sample and hold unit, an I/Q differentiator and an FSK demodulator. All the component steps are separately built and built in the form of a customer specific ASIC.