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A co-simulation result of a Zero crossing BFSK demodulator with a frequency-hopped spread-spectrum receiver for wireless sensor applications in the 863-870-MHz ISM band is presented. The structure is suitable for Zigbee (IEEE 802.15.4) receiver. The zero crossing demodulator uses a digital one-shot circuit as a differentiator and a pulse width equalization circuit. The proposed demodulator is able...
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