Design adaptation of an electronically tunable oscillator using a low performance linearized CMOS operational transconductance amplifier

IF 5.4 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Engineering Science and Technology-An International Journal-Jestech Pub Date : 2025-09-12 DOI:10.1016/j.jestch.2025.102178

Roman Sotner , Ladislav Polak , Lukas Langhammer , Darius Andriukaitis

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引用次数: 0

Abstract

This paper presents the implementation of commercially available CMOS devices with unfavorable properties, such as low output resistance, in an application designed to mitigate these limitations. By employing a specific topology and considering key design parameters, the proposed approach minimizes the adverse effects of low output resistance. This design focuses on a linearized operational transconductance amplifier (OTA) based on CMOS transistors, featuring with very low output resistance. This OTA is further integrated into an LC oscillator, where the associated disadvantages are suppressed through a specialized topology and careful selection of parameter values that are unaffected by the low OTA output resistance. The operational verification targets a frequency range of several hundred kHz and a linearly processed voltage range of several hundred mV. The linearized OTA-based low-gain amplifier/attenuator offers a linearity error within −7% (±500 mV). The proposed OTA implementation in the oscillator introduces highly simplified method for adjusting the oscillation condition using a single grounded element while minimizing the adverse effects of low output resistance of OTA. Additionally, the tunability of the oscillator using varactor diodes achieving a range from 120 kHz to 273 kHz for a voltage varying from 0 V to 5 V.

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采用低性能线性化CMOS运算跨导放大器设计一种电子可调谐振荡器

本文介绍了商用CMOS器件的不利特性，如低输出电阻，在一个旨在减轻这些限制的应用中的实现。通过采用特定的拓扑结构并考虑关键的设计参数，所提出的方法最大限度地减少了低输出电阻的不利影响。本设计主要研究一种基于CMOS晶体管的线性化运算跨导放大器（OTA），具有极低的输出电阻。该OTA进一步集成到LC振荡器中，通过专门的拓扑结构和不受低OTA输出电阻影响的参数值的仔细选择，可以抑制相关的缺点。工作验证的目标频率范围为几百kHz，线性处理电压范围为几百mV。基于线性化ota的低增益放大器/衰减器的线性误差在- 7%（±500 mV）以内。所提出的振荡器中的OTA实现引入了高度简化的方法，用于使用单个接地元件调整振荡条件，同时最小化OTA的低输出电阻的不利影响。此外，使用变容二极管的振荡器的可调性在0 V到5 V的电压范围内达到120 kHz到273 kHz。

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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来源期刊

Engineering Science and Technology-An International Journal-Jestech Materials Science-Electronic, Optical and Magnetic Materials

CiteScore

11.20

自引率

3.50%

发文量

153

审稿时长

22 days

期刊介绍： Engineering Science and Technology, an International Journal (JESTECH) (formerly Technology), a peer-reviewed quarterly engineering journal, publishes both theoretical and experimental high quality papers of permanent interest, not previously published in journals, in the field of engineering and applied science which aims to promote the theory and practice of technology and engineering. In addition to peer-reviewed original research papers, the Editorial Board welcomes original research reports, state-of-the-art reviews and communications in the broadly defined field of engineering science and technology. The scope of JESTECH includes a wide spectrum of subjects including: -Electrical/Electronics and Computer Engineering (Biomedical Engineering and Instrumentation; Coding, Cryptography, and Information Protection; Communications, Networks, Mobile Computing and Distributed Systems; Compilers and Operating Systems; Computer Architecture, Parallel Processing, and Dependability; Computer Vision and Robotics; Control Theory; Electromagnetic Waves, Microwave Techniques and Antennas; Embedded Systems; Integrated Circuits, VLSI Design, Testing, and CAD; Microelectromechanical Systems; Microelectronics, and Electronic Devices and Circuits; Power, Energy and Energy Conversion Systems; Signal, Image, and Speech Processing) -Mechanical and Civil Engineering (Automotive Technologies; Biomechanics; Construction Materials; Design and Manufacturing; Dynamics and Control; Energy Generation, Utilization, Conversion, and Storage; Fluid Mechanics and Hydraulics; Heat and Mass Transfer; Micro-Nano Sciences; Renewable and Sustainable Energy Technologies; Robotics and Mechatronics; Solid Mechanics and Structure; Thermal Sciences) -Metallurgical and Materials Engineering (Advanced Materials Science; Biomaterials; Ceramic and Inorgnanic Materials; Electronic-Magnetic Materials; Energy and Environment; Materials Characterizastion; Metallurgy; Polymers and Nanocomposites)