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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60162694%3AG43__%2F26%3A00565911" target="_blank" >RIV/60162694:G43__/26:00565911 - isvavai.cz</a>

Alternative codes found

RIV/00216305:26220/26:0198899

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S2215098625002332" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2215098625002332</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jestch.2025.102178" target="_blank" >10.1016/j.jestch.2025.102178</a>

Result language

angličtina

Original language name

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

Original language description

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.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

21100 - Other engineering and technologies

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Engineering Science and Technology, an International Journal

ISSN

2215-0986

e-ISSN

—

Volume of the periodical

71

Issue of the periodical within the volume

November 2025

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

10

Pages from-to

102178

UT code for WoS article

001572425000001

EID of the result in the Scopus database

2-s2.0-105015354715