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

I. Abdalla, A. Allam, H. Jia, Ramesh K. Pokharel
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引用次数: 0

摘要

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