← 返回 JSSC 论文列表JSSC 2007第2期RF & Wireless0.18μm CMOSLNA
A Broadband Noise-Canceling CMOS LNA for 3.1–10.6-GHz UWB Receivers
采用宽带噪声消除技术的3.1-10.6GHz超宽带低噪声放大器
9.7dB增益, 4.5-5.1dB噪声系数, 1.2-11.9GHz带宽, 20mW功耗
超宽带低噪声放大器噪声消除CMOS宽带匹配
▸创新点1：宽带噪声消除技术（电路创新）。通过引入宽带噪声消除电路，有效抑制了匹配器件在3.1-10.6 GHz UWB频段内的噪声，显著降低了整体噪声系数，实现了4.5-5.1 dB的低噪声性能。
▸创新点2：系统化设计方法最小化噪声（方法创新）。采用系统化的设计方法，优化了噪声消除电路中其他器件的噪声贡献，确保整体噪声最小化，同时保持了电路的宽带性能。
▸创新点3：超宽带性能优化（系统创新）。通过优化电路设计和布局，实现了1.2-11.9 GHz的超宽带3 dB带宽，同时保持了9.7 dB的功率增益，满足了UWB接收器的宽带需求。
▸创新点4：低功耗与小型化设计（电路创新）。在0.18-μm CMOS工艺下，电路仅消耗20 mW功耗，并实现了0.59 mm²的小面积，适合集成到紧凑的UWB接收器中。
Abstract
An ultra-wideband 3.1–10.6-GHz low-noise amplifier employing a broadband noise-canceling technique is presented. By using the proposed circuit and design methodology, the noise from the matching device is greatly suppressed over the desired UWB band, while the noise from other devices performing noise cancel- lation is minimized by the systematic approach. Fabricated in a 0.18- m CMOS process, the IC prototype achieves a power gain of 9.7 dB over a 3 dB bandwidth of 1.2–11.9-GHz and a noise figure of 4.5–5.1 dB in the entire UWB band. It consumes 20 mW from a 1.8-V supply and occupies an area of only 0.59 mm /50.