A broadband high linearity inductorless CMOS variable gain amplifier for square kilometer array

2015 International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design (SMACD) Pub Date : 2015-10-26 DOI:10.1109/SMACD.2015.7301683

I. Abdalla, A. Allam, H. Jia, Ramesh K. Pokharel

引用次数: 0

Abstract

This paper presents a high-bandwidth 2 GHz CMOS variable gain amplifier (VGA) for using in the band of square kilometer array (SKA) range that achieves an 18 dB dynamic range (DR) while powered from a single 1.8 V supply. This VGA capability is obtained by employing a passive digital T-bridge attenuator followed by a fixed amplifier, the use of attenuator in the front end of the VGA results in a high linearity of 28 dBm to 34 dBm over the full DR. In contrast to traditional VGAs [5], [6], the VGA exhibits 30-50 dB more in DR while its bandwidth and IP3 extends below the presented.

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一种用于平方公里阵列的宽带高线性度无电感CMOS变增益放大器

本文介绍了一种用于平方公里阵列(SKA)频段的高带宽2 GHz CMOS可变增益放大器(VGA)，该放大器在1.8 V单电源供电时可实现18 dB动态范围(DR)。这种VGA能力是通过采用无源数字t桥衰减器和固定放大器获得的，在VGA前端使用衰减器可以在整个DR范围内实现28 dBm至34 dBm的高线性度。与传统VGA[5]，[6]相比，VGA在DR范围内的线性度增加了30-50 dB，而其带宽和IP3则低于所提供的。

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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2015 International Conference on Synthesis, Modeling, Analysis and Simulation Methods and Applications to Circuit Design (SMACD)

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