A 0.18μm CMOS single-inductor single-stage quadrature frontend for GNSS receiver  

作　　者：李兵 庄奕琪 韩业奇 邢晓岭 李振荣 龙强 

机构地区：[1]Key Laboratory of the Ministry of Education for Wide Bandgap Semiconductor Materials and Devices,School of Microelectronics,Xidian University

出　　处：《Journal of Semiconductors》2011年第9期99-105,共7页半导体学报（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(No.61076101)

摘　　要：This paper presents an improved merged architecture for a low-IF GNSS receiver frontend,where the bias current and functions are reused in a stacked quadrature LNA-mixer-VCO.Only a single spiral inductor is implemented for the LC resonator and an extra 1/2 frequency divider is added as the quadrature LO signal generator. The details of the design are presented.The gain plan and noise figure are discussed.The phase noise,quadrature accuracy and power consumption are improved.The test chip is fabricated though a 0.18μm RF CMOS process. The measured noise figure is 5.4 dB on average,with a gain of 43 dB and a IIP3 of-39 dBm.The measured phase noise is better than -105 dBc/Hz at 1 MHz offset.The total power consumption is 19.8 mW with a 1.8 V supply. The experimental results satisfy the requirements for GNSS applications.This paper presents an improved merged architecture for a low-IF GNSS receiver frontend,where the bias current and functions are reused in a stacked quadrature LNA-mixer-VCO.Only a single spiral inductor is implemented for the LC resonator and an extra 1/2 frequency divider is added as the quadrature LO signal generator. The details of the design are presented.The gain plan and noise figure are discussed.The phase noise,quadrature accuracy and power consumption are improved.The test chip is fabricated though a 0.18μm RF CMOS process. The measured noise figure is 5.4 dB on average,with a gain of 43 dB and a IIP3 of-39 dBm.The measured phase noise is better than -105 dBc/Hz at 1 MHz offset.The total power consumption is 19.8 mW with a 1.8 V supply. The experimental results satisfy the requirements for GNSS applications.

关 键 词：low power current reuse low-IF architecture RF frontend MIXER GNSS 

分 类 号：TN851[电子电信—信息与通信工程]