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A miniaturized 35 GHz 65-nm CMOS digital-controlled differential variable gain amplifier
Microwave and Optical Technology Letters ( IF 1.0 ) Pub Date : 2021-09-23 , DOI: 10.1002/mop.33055
Wei-Chung Cheng, Zuo-Min Tsai

This paper presents a 35 GHz differential variable gain amplifier (VGA) with 4-bit digital-controlled gain-tuning using 65-nm CMOS process. Using the proposed miniaturized differential matching inductors, a core size of the VGA is only 0.53 × 0.26 mm. The digital gain control mechanism is achieved using the digital version current steering topology. The measured gain control range of the VGA is from 17.4 to 9 dB at 35 GHz with 16 different linear-in-dB gain states. Thus, this work achieves the maximum peak gain per unit core size and maintains a much better gain control range per unit core size. The measured root mean square gain error is <0.29 dB and phase error is < 4.6 ° from 34 to 36.5 GHz.

中文翻译:

小型化 35 GHz 65-nm CMOS 数控差分可变增益放大器

本文介绍了一种 35 GHz 差分可变增益放大器 (VGA),采用 65 纳米 CMOS 工艺,具有 4 位数字控制增益调节功能。使用建议的微型差分匹配电感,VGA的核心尺寸仅为0.53 × 0.26 毫米。数字增益控制机制是使用数字版本电流转向拓扑实现的。VGA 的测量增益控制范围在 35 GHz 时为 17.4 至 9 dB,具有 16 种不同的线性 dB 增益状态。因此,这项工作实现了每单位核心尺寸的最大峰值增益,并保持了每单位核心尺寸更好的增益控制范围。测得的均方根增益误差 <0.29 dB,相位误差 < 4.6 ° 从 34 到 36.5 GHz。
更新日期:2021-12-01
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