System analysis of 2.4 GHz IEEE 802.15.4 compliant frequency synthesizer

Abstract

This paper presents a detailed system design of PLL frequency synthesizer. The PLL is designed for 2.4 GHz unlicensed industrial, scientific, and medical band (ISM band) IEEE 802.15.4 Zigbee transceiver. The PLL system analysis is meant for Zero-IF transceiver. Hand calculations and assumptions are discussed then validated by ADS (Advanced Design System) simulations.