World Journal of Engineering Research and Technology (WJERT) has indexed with various reputed international bodies like : Google Scholar , Index Copernicus , Indian Science Publications , SOCOLAR, China , International Institute of Organized Research (I2OR) , Cosmos Impact Factor , Research Bible, Fuchu, Tokyo. JAPAN , Scientific Indexing Services (SIS) , Jour Informatics (Under Process) , UDLedge Science Citation Index , International Impact Factor Services , International Scientific Indexing, UAE , International Society for Research Activity (ISRA) Journal Impact Factor (JIF) , International Innovative Journal Impact Factor (IIJIF) , Science Library Index, Dubai, United Arab Emirates , Scientific Journal Impact Factor (SJIF) , Science Library Index, Dubai, United Arab Emirates , Eurasian Scientific Journal Index (ESJI) , Global Impact Factor (0.342) , IFSIJ Measure of Journal Quality , Web of Science Group (Under Process) , Directory of Research Journals Indexing , Scholar Article Journal Index (SAJI) , International Scientific Indexing ( ISI ) , Scope Database , Academia , Research Publication Rating and Indexing , 

World Journal of Engineering Research and Technology

( An ISO 9001:2015 Certified International Journal )

An International Peer Reviewed Journal for Engineering Research and Technology

An Official Publication of Society for Advance Healthcare Research (Reg. No. : 01/01/01/31674/16)

ISSN 2454-695X

Impact Factor : 7.029

ICV : 79.45

WJERT Citation

  All Since 2020
 Citation  172  110
 h-index  7  5
 i10-index  1  0

News & Updation

  • Article Invited for Publication

    Article are invited for publication in WJERT Coming Issue

  • ICV

    WJERT Rank with Index Copernicus Value 79.45 due to high reputation at International Level

  • WJERT New Impact Factor

    WJERT Impact Factor has been Increased to 7.029 for Year 2024.

  • WJERT: MAY ISSUE PUBLISHED

    MAY 2025 Issue has been successfully launched on 1 MAY 2025.

  • New Issue Published

    Its Our pleasure to inform you that, WJERT May 2025 Issue has been Published, Kindly check it on https://www.wjert.org/home/current_issues

Abstract

FPGA-BASED FM MODULATOR WITH CARRIER DERIVED FROM A MODIFIED SINGLE OP-AMP JERK CIRCUIT

Tchahou Tchendjeu Achille Ecladore*, Alombad Henry Njimboh, Noula Moungang Thomas, Tchitnga Robert, Fotsin Hillaire Bertrand

ABSTRACT

In this paper, a digital oscillator derived from a modified single op-amp jerky type circuit as carrier of an FM modulator and its FPGA implementation is proposed. We studied the dynamics of the modified oscillator circuit jerky type and we derived from this study a stable oscillator so that its frequency can be controlled by one of its parameters. The regular oscillator designed is used to build a digital FM modulator and its FPGA-based implementation. The proposed digital FM modulator is made of a digital solver and a digital-to-analog converter. The post-synthesis of the modulator described with VHDL with fixed-point operations as per IEEE754 standards to be deployedon cyclone IV-EEP4CE115F29C7N of the board DE2-115 presents the following results: 10 688 logic elements, 96 registers, 35 embedded multipliers and an estimated power consumption of 152.83mW. In general, the proposed modulator design presents low area and power consummation. From the experimental results, it can be seen clearly and concluded that the model could be used as a digital modulator.

[Full Text Article] [Download Certificate]