DESIGN OF A FULLY INTEGRATED 2.4 GHz FREQUENCY PLL SYNTHESIZER FOR ZigBee TRANSCEIVER APPLICATION

Author:

LI DI1,YANG YINTANG1,ZHOU DUAN1,LI YANI1,WU XIAOPENG1

Affiliation:

1. School of Microelectronics, Xidian University, No. 2 Taibai Road, Mailbox 373, Xi'an, Shaanxi 710071, P. R. China

Abstract

A 2.4-GHz fully integrated frequency synthesizer is presented in this paper for Low-IF ZigBee (IEEE802.15.4) transceiver applications. The frequency synthesizer meets the system requirement of 2.4–2.4835 GHz frequency range with a frequency resolution of 5 MHz. The automatic-amplitude control (AAC) technique is employed for the voltage-controlled oscillator (VCO) which helps to optimize the output amplitude of the VCO over voltage, process and temperature variations. The chip has been fabricated in a 0.18 μm complementary metal oxide semiconductor (CMOS) process using a single poly layer, four metal layers and metal–insulator–metal (MIM) capacitors. The synthesized has a current dissipation of 4.7 mA from a 1.8 V power supply and occupies an area of 1 mm2 × 0.85 mm2. Measurement results show that the phase noise are -82 dBc/Hz–100 kHz offset and -109 dBc/Hz–1 MHz offset respectively.

Publisher

World Scientific Pub Co Pte Lt

Subject

Electrical and Electronic Engineering,Hardware and Architecture,Electrical and Electronic Engineering,Hardware and Architecture

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