JSSC 2008第11期Other

Patent Abstracts The Patents Abstracts and References cited are intended to provide the minimum information necessary for determining interest. The full text and images can be obtained from the U.S. Patent Ofﬁce at http:// www.uspto.gov. 7,317,357 January 8, 2008 High Linearity Low Noise Variable Gain Ampliﬁer With Continuous Gain Control Inventors: Min Z. Zou (San Jose, CA) Assignee: Linear Technology Corporation (Milpitas, CA)

该论文介绍了一种高线性度低噪声可变增益放大器及其连续增益控制技术。

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可变增益放大器高线性度低噪声连续增益控制晶体管单元

▸多晶体管单元串联结构：通过将多个晶体管单元串联连接，实现了更高的线性度和更低的噪声，同时优化了信号传输路径，显著提升了放大器的整体性能。

▸AC或虚拟接地技术：采用AC或虚拟接地技术，有效减少了信号干扰和噪声，提高了电路的稳定性和可靠性，特别适用于高频应用场景。

▸连续增益控制：通过创新的连续增益控制机制，实现了对放大器增益的精确调节，避免了传统离散增益控制带来的信号失真问题，提升了系统的灵活性。

▸高线性度低噪声设计：结合多晶体管单元串联和AC虚拟接地技术，实现了高线性度和低噪声的放大器设计，满足了高精度信号处理的需求。

Abstract

ermining interest. The full text and images can be obtained from the U.S. Patent Ofﬁce at http:// www.uspto.gov. 7,317,357 January 8, 2008 High Linearity Low Noise Variable Gain Ampliﬁer With Continuous Gain Control Inventors: Min Z. Zou (San Jose, CA) Assignee: Linear Technology Corporation (Milpitas, CA) Filed: June 23, 2006. Current U.S. Class: 330/254; 330/278 Current International Class: H03F 3/45 (20060101) Field of Search: 330/254,278,261,252 U.S. Patent Documents 5077541 Dec., 1991 Gilbe