A 5-GHz BiCMOS variable-gain low noise amplifier with inductorless low-gain branch

Proceedings of the 31st European Solid-State Circuits Conference, 2005. ESSCIRC 2005. Pub Date : 2005-12-05 DOI:10.1109/ESSCIR.2005.1541600

Mingxu Liu, J. Craninckx

引用次数: 4

Abstract

A 5-GHz variable-gain low noise amplifier without using an excess inductor in its low-gain mode has been demonstrated. When the LNA's gain is reduced from 16.3 dB to 5.8 dB, its IIP3 is improved from -7.8 dBm to +1.1 dBm and current consumption is reduced from 3 mA to 2 mA. The noise figures in the high- and low-gain modes are 3.5 dB and 8.3 dB, respectively. Input and output impedance matching are well maintained in both modes. The amplifier is also unconditionally stable from 100 MHz to 10 GHz.

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具有无电感低增益支路的5 ghz BiCMOS变增益低噪声放大器

在其低增益模式下，演示了一种不使用多余电感的5 ghz变增益低噪声放大器。当LNA的增益从16.3 dB降低到5.8 dB时，其IIP3从-7.8 dBm提高到+1.1 dBm，电流消耗从3 mA降低到2 mA。高增益和低增益模式下的噪声系数分别为3.5 dB和8.3 dB。在两种模式下都能很好地保持输入和输出阻抗匹配。该放大器在100 MHz至10 GHz范围内也无条件稳定。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Proceedings of the 31st European Solid-State Circuits Conference, 2005. ESSCIRC 2005.

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