标题: | 超宽频无线网路应用之低功率互补金氧半射频前端接收器设计 Low Power CMOS RF Receiver Front-End Design for Ultra-wideband Wireless Applications |
作者: | 吴昌庆 Chang-Ching Wu 温瓌岸 Kuei-Ann Wen 电机学院电子与光电学程 |
关键字: | 超宽频;射频前端接收器;低杂讯放大器;低功耗;ultra-wideband (UWB);RF receiver front-end;low noise amplifier (LNA);low power |
公开日期: | 2004 |
摘要: | 本论文针对超宽频(UWB)无线网路应用提出低功率互补式金氧半(CMOS)射频前端接收器之设计。本文提出之低杂讯放大器(LNA)采用两级堆叠交错调整之共射级放大器架构,其中两级分别谐振于不同频率,以达成低功耗和超宽频之设计目标。经由0.18-μm CMOS 制程进行电路实作,量测出2.4G-9.4GHz的超大频宽与7.3mW的极低功耗,同时具有9.7dB的最大功率增益、4.17dB的最低杂讯值和-3.5dBm的第三阶互调线性度,验证此两级堆叠交错调整之低杂讯放大器电路架构之优点。将此优异低杂讯放大器架构应用于超宽频射频前端接收器,加上被动式混波器,以符合低功耗与低闪烁杂讯之要求,并且增加一组偏压接地之低杂讯基频放大器,以补偿被动式混波器之增益损失,进而有助于提升整体射频接收器之杂讯绩效。此超宽频射频前端接收器参考多频带正交频率多重分割技术规格草案的第一频带组需求,运作频带从3GHz到5GHz,并以射频/基频共同模拟来验证其低杂讯,高增益以及良好线性度之特性。 This thesis presents a low-power design of a direct conversion CMOS RF receiver front-end for ultra-wideband (UWB) wireless applications. To achieve low power consumption and wide operating bandwidth, the proposed LNA employing stagger tuning technique consists of two stacked common-source stages with different resonance frequencies. A circuit implementation in 0.18-μm CMOS process shows a 2.4-9.4-GHz bandwidth. The amplifier provides a maximum forward gain (S21) of 9.7 dB while drawing 7.3 mW from a 1.8-V supply. A noise figure as low as 4.17 dB and an IIP3 of –3.5 dBm have been measured. In this thesis, design optimization for the power-constrained stacked amplifiers in wide bandwidth applications is also presented. The novel topology of low power UWB LNA is applied to the RF front-end design for the UWB direct conversion receiver. In the RF front-end, a wideband passive mixer is designed for the purpose of low power, little flicker noise and high linearity after the LNA. A baseband amplifier biased at ground level is designed with consideration of low noise for compensating the gain loss of the passive mixer and consequently help improving overall noise performance of the receiver. The UWB receiver front-end referenced to the band group #1 of the Multi-Band OFDM with operation frequency range 3-5 GHz demonstrates low noise figure, low power, high gain, and wide bandwidth. It is also verified by a RF/Baseband co-simulation. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#GT009167517 http://hdl.handle.net/11536/63423 |
显示于类别: | Thesis |
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