利用正负反馈作为输入跨导的130 nm CMOS无源混频器

2019 MIXDES - 26th International Conference "Mixed Design of Integrated Circuits and Systems" Pub Date : 2019-06-01 DOI:10.23919/MIXDES.2019.8787186

A. Zokaei, K. El-Sankary, Dmitry Trukhachev, A. Amirabadi

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引用次数: 0

摘要

本文介绍了一种新型无源混频器的设计，该混频器采用输入Gm级，既提高了混频器的噪声性能，又提供了合理的线性度。该混频器是双平衡无源混频器，利用运放作为输出级的输出跨阻放大器。A类运放的设计是为了确保电路的功能，并在输出级提供必要的增益和合理的相位裕度。在130 nm CMOS工艺中对混频器进行了仿真。在1-5 GHz带宽范围内，转换增益大于9 dB，带宽大于4 GHz，输入参考噪声为2.5 nV/√Hz，功耗为8.28 mW。

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A 130 nm CMOS Passive Mixer Utilizing Positive-Negative Feedback as the Input Transconductance

This paper describes the design of a novel passive mixer which utilizes an input Gm stage which enhances the noise performance and also provides a reasonable linearity for the mixer. The mixer is a double balanced passive mixer which utilizes an opamp as the output transimpedance amplifier for the output stage. A class A opamp is designed to ensure the functionality of the circuit and providing the requisite gain at the output stage with a reasonable phase margin. The mixer is simulated in a 130 nm CMOS process. It has a conversion gain of more than 9 dB for more than 4 GHz bandwidth from 1-5 GHz, input referred noise of 2.5 nV/√ Hz and dissipates 8.28 mW of power.

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2019 MIXDES - 26th International Conference "Mixed Design of Integrated Circuits and Systems"

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