An Ultra-wideband Low-power Low-noise Amplifier Linearized by Adjusted Derivative Superposition and Feedback Techniques

IF 1.2 Q3 MULTIDISCIPLINARY SCIENCES
Mohsen Alirezapoori, Mohsen Hayati, M. A. Imani, F. Shama, Pouria Almasi
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引用次数: 0

Abstract

Ultra-wideband (UWB) applications require low-power and low-noise amplifiers (LNAs) that can operate over a wide frequency range. However, conventional LNAs often suffer from poor linearity and high-power consumption. This research work proposes a novel LNA design that uses the adjusted derivative superposition (DS) technique and feedback to improve the linearity and reduce the power consumption of UWB LNAs. The DS technique enhances the third-order intermodulation (IM3) cancellation by adjusting the bias currents of the transistors, whereas the feedback improves the stability and input matching of the LNA. The LNA is implemented using a degenerated common source topology in a 180 nm standard CMOS technology. The simulation results show that the LNA achieves a power gain of 10–12.2 dB, an input third-order intercept point (IIP3) of about 12 dBm, and a noise figure of less than 2.5 dB over the UWB frequency band of 3.1–10.6 GHz. The input reflection coefficient is less than -10 dB, and the power consumption is 11.6 mW with a 1.5 V power supply. The designed LNA offers a novel and innovative solution for UWB applications that significantly improve the performance and efficiency of UWB LNAs whereas reducing the cost and complexity of implementation.
利用调整衍生叠加和反馈技术线性化的超宽带低功耗低噪声放大器
超宽带 (UWB) 应用需要能在宽频率范围内工作的低功耗、低噪声放大器 (LNA)。然而,传统的 LNA 通常线性度差、功耗高。本研究提出了一种新型 LNA 设计,利用调整导数叠加(DS)技术和反馈来提高 UWB LNA 的线性度并降低功耗。导数叠加(DS)技术通过调整晶体管的偏置电流来增强三阶互调(IM3)消除,而反馈则能改善 LNA 的稳定性和输入匹配。该 LNA 采用退化共源拓扑结构,采用 180 nm 标准 CMOS 技术实现。仿真结果表明,该 LNA 在 3.1-10.6 GHz 的 UWB 频段内实现了 10-12.2 dB 的功率增益、约 12 dBm 的输入三阶截取点 (IIP3),以及低于 2.5 dB 的噪声系数。输入反射系数小于 -10 dB,1.5 V 电源功耗为 11.6 mW。所设计的低噪声放大器为 UWB 应用提供了一种新颖、创新的解决方案,可显著提高 UWB 低噪声放大器的性能和效率,同时降低实施成本和复杂性。
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来源期刊
ARO-THE SCIENTIFIC JOURNAL OF KOYA UNIVERSITY
ARO-THE SCIENTIFIC JOURNAL OF KOYA UNIVERSITY MULTIDISCIPLINARY SCIENCES-
自引率
33.30%
发文量
33
审稿时长
16 weeks
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