用于宽带任意波发生器的可变增益放大器

doi:10.16257/j.cnki.1681-1070.2023.0008

电子与封装 ›› 2023, Vol. 23 ›› Issue (2): 020303 . doi: 10.16257/j.cnki.1681-1070.2023.0008

用于宽带任意波发生器的可变增益放大器

罗阳¹;栾舰²;周磊²;武锦²

1.中电科思仪科技股份有限公司，山东青岛 266000；2. 中国科学院微电子研究所，北京 100029

收稿日期:2022-07-31 发布日期:2022-10-10
作者简介:罗阳（1985—），男，本科，高级工程师，现从事任意波形发生器设计工作。

Variable Gain Amplifierfor Broadband Arbitrary Waveform Generator

LUO Yang¹, LUAN Jian², ZHOU Lei², WU Jin²

1.Ceyear Technologies Co., Ltd., Qingdao 266000, China; 2. Institute ofMicroelectronics, Chinese Academy of Sciences, Beijing100029, China

Received:2022-07-31 Published:2022-10-10

摘要/Abstract

摘要： 在宽带任意波发生器（AWG）研制中，一个重要的挑战来自宽带可变增益放大器(VGA)。作为设备的信号输出接口电路，VGA承担了输出信号放大、共模电压调节、驱动负载等重要功能，在很大程度上决定了设备的综合性能。设计了一款适用于宽带AWG的VGA芯片，采用一种改进的数字增益调节架构，在兼顾带宽的同时，消除了模拟控制电压的影响，并确保了增益的单调性。芯片采用SiGeBiCMOS工艺实现，测试结果表明，芯片可以实现0.125~2倍的单调增益控制，最小增益步进约为0.125倍；在输入信号频率为4GHz时的输出信号衰减为－2.83dB。

关键词: 可变增益放大器, 任意波发生器, 宽带

Abstract: In the design of a broadband arbitrary waveform generator (AWG), an important challenge comes from the broadband variable gain amplifier (VGA). As the signal output interfacecircuit of the device, the VGA undertakes important functions such as output signal amplification, common mode voltage adjustment and driving load,which determines the comprehensive performance of the device to a large extent. A VGA for a wideband AWG is designed. An improved digital gain adjustment architecture is proposed. This architecture eliminates the effects of analog control voltage and ensures gain monotonicity while not compromising bandwidth performance. The chip is implemented with SiGeBiCMOS process. Measurement results show that a monotonic gain of 0.125-2 is achieved with the minimum gain step of about 0.125. The output signal attenuation at the input signal frequency of 4 GHz is about －2.83 dB.

Key words: variable gain amplifier, arbitrary waveform generator, broadband

中图分类号:

TN492

罗阳;栾舰;周磊;武锦. 用于宽带任意波发生器的可变增益放大器[J]. 电子与封装, 2023, 23(2): 020303 .

LUO Yang, LUAN Jian, ZHOU Lei, WU Jin. Variable Gain Amplifierfor Broadband Arbitrary Waveform Generator[J]. Electronics & Packaging, 2023, 23(2): 020303 .

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中国半导体行业协会封装分会会刊

中国电子学会电子制造与封装技术分会会刊

用于宽带任意波发生器的可变增益放大器

Variable Gain Amplifierfor Broadband Arbitrary Waveform Generator

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