A 0.2-3 GHz Inductor-Less LNA Using Noise-Canceling and Dual-Resistor Feedback Technique

IF 4 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Circuits and Systems II: Express Briefs Pub Date : 2025-01-20 DOI:10.1109/TCSII.2025.3531994

Junfan Yan;Wenjie Feng;Pei Qin;Haoshen Zhu;Yunfei Cao;Wenquan Che;Quan Xue

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Abstract

In this brief, an inductor-less low-noise amplifier (LNA) that utilizes a noise-canceling technique along with dual-resistor feedback is proposed. The conventional single-resistor feedback structure exhibits a performance constraint that limits the relationship between power gain and input matching. In contrast, the dual-resistor feedback structure proposed in this brief overcomes this limitation, enabling both high gain and low noise while maintaining good input matching. The dual-resistor feedback configuration includes a local feedback resistor which enhances the gain. Additionally, the global feedback resistor directly connect the inputs and outputs of the circuit, thereby breaking the constraints between the properties through feedback. The proposed LNA fabricated in 65-nm CMOS technology exhibiting a minimal NF of 2.08 dB within a 3-dB bandwidth that spans from 0.25 to 2.83 GHz, along with a peak power gain of 16.53 dB. The circuit operates with a power consumption of 10.6 mW under a supply voltage of 1.1 V, while occupying a core area of only 0.012 mm2.

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采用降噪和双电阻反馈技术的0.2- 3ghz无电感LNA

本文提出了一种利用双电阻反馈和噪声消除技术的无电感低噪声放大器（LNA）。传统的单电阻反馈结构表现出性能约束，限制了功率增益和输入匹配之间的关系。相比之下，本文中提出的双电阻反馈结构克服了这一限制，在保持良好输入匹配的同时实现高增益和低噪声。双电阻反馈配置包括一个本地反馈电阻，以提高增益。此外，全局反馈电阻直接连接电路的输入和输出，从而通过反馈打破了属性之间的限制。所提出的LNA采用65纳米CMOS技术制造，在0.25至2.83 GHz的3db带宽范围内，最小NF为2.08 dB，峰值功率增益为16.53 dB。该电路在1.1 V电源电压下的功耗为10.6 mW，而核心面积仅为0.012 mm2。

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来源期刊

IEEE Transactions on Circuits and Systems II: Express Briefs 工程技术-工程：电子与电气

CiteScore

7.90

自引率

20.50%

发文量

883

审稿时长

3.0 months

期刊介绍： TCAS II publishes brief papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes: Circuits: Analog, Digital and Mixed Signal Circuits and Systems Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic Circuits and Systems, Power Electronics and Systems Software for Analog-and-Logic Circuits and Systems Control aspects of Circuits and Systems.