A 3.1∼4.8 GHz wideband mixer for MB-OFDM UWB receivers with improved noise performance

2009 IEEE Youth Conference on Information, Computing and Telecommunication Pub Date : 2009-09-01 DOI:10.1109/YCICT.2009.5382433

Yang Gao, F. Huang, Jia Hua Cheng, Lianhong Wu

引用次数: 3

Abstract

A CMOS down-conversion mixer for MB-OFDM (Multi-Band Orthogonal Frequency Division Multiplexing) UWB (Ultra-Wide Band) application is presented. The mixer is implemented with a double-balanced Gilbert-cell architecture and adopts dynamic current source to improve noise performance. Two inductors are also introduced to reduce the flicker noise. Designed in SMIC 0.18 µm CMOS process, simulation results show a conversion gain of 9 to 11.5 dB, a noise figure of 10.8 to 13.2 dB, and an input-referred third-order intercept point of −10.5 to −8.2 dBm. The power consumption of the mixer core is 11.3 mW.

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3.1 ~ 4.8 GHz宽带混频器，用于MB-OFDM UWB接收机，具有改进的噪声性能

提出了一种适用于MB-OFDM(多频带正交频分复用)UWB(超宽带)应用的CMOS下变频混频器。混频器采用双平衡吉尔伯特单元结构，并采用动态电流源来提高噪声性能。还引入了两个电感器来降低闪烁噪声。仿真结果表明，该电路采用中芯国际0.18µm CMOS工艺设计，转换增益为9 ~ 11.5 dB，噪声系数为10.8 ~ 13.2 dB，输入参考三阶截距为- 10.5 ~ - 8.2 dBm。混合器芯的功耗为11.3 mW。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2009 IEEE Youth Conference on Information, Computing and Telecommunication

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