Abstract:A 5-GHz frequency synthesizer for ZIGBEE(IEEE 802.15.4) was implemented. It consumes only 14mW adopting CMOS Logic divider and phase-switching dual-modulus. A 2 nd loop filter is internally embodied to reduce external components. The phase switching is made between the 45 spaced output phases to reduce the power consumption and improve the robustness of circuit. This synthesizer was fabricated in 0.18-um technology; it consumes 8mA at 1.8V and offers 100kHz-loop bandwidth and -103dBc/Hz at an offset of 1MHz. t… Show more
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