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All Journal JTEV (Jurnal Teknik Elektro dan Vokasional Indonesian Journal of Electrical Engineering and Computer Science
Nurmayni, Ratna
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Control & Systems Engineering Education Electrical & Electronics Engineering Energy Social Sciences

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Perancangan Concurrent Penta-Band Low Noise Amplifier pada Perangkat Mobile Communication Wildan, Muh; Wibowo, Priyo; Nurmayni, Ratna
JTEV (Jurnal Teknik Elektro dan Vokasional) Vol 10, No 1 (2024): JTEV (Jurnal Teknik Elektro dan Vokasional)
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jtev.v10i1.127358

Abstract

Perangkat telekomunikasi saat ini berkembang sangat pesat. Teknologi hardware pada transceiver merupakan salah satu yang menjadi perhatian bersama karena mampu meningkatkan efisiensi sekaligus mendukung berbagai standar komunikasi nirkabel global pada sistem GSM, WDCMA, 4G LTE, WLAN, DECT, maupun GPS. Kebutuhan perangkat transceiver saat ini yang sesuai dengan kebutuhan masyarakat adalah ketika memiliki device yang kecil, compact, dan dapat bekerja secara bersamaan. Penelitian ini bertujuan untuk merancang low noise amplifier (LNA) yang mampu bekerja bersama secara simultan (concurrent) penta-band pada standar frekuensi perangkat mobile communication yang beroperasi dengan frekuensi tengah 948 MHz (GSM), 1220 MHz (GPS), 1880 MHz (DECT), 2450 MHz (Bluetooth, WLAN, Wi-Fi) dan 2740 MHz (LTE). Metode pada penelitian ini adalah perancangan dan analisis. Metode perancangan ini adalah melakukan pembentukan desain secara matematis dan simulasi rangkaian menggunakan perangkat lunak ADS 2009. Kemudian metode analisis digunakan untuk mengetahui hasil simulasi dengan analisis data agar supaya dihasilkan desain yang memenuhi spesifikasi rancangan yang ditetapkan. Hasil simulasi parameter concurrent LNA penta-band berupa Kestabilan (K) rangkaian, input return loss (S11), gain (S21) dan noise figure (NF) pada kelima frekuensi tersebut semuanya memenuhi kriteria perancangan yaitu K > 1, S11 < -10 dB, S21 > 20 dB, dan NF < 3.
Transforming E-governance: the potential of blockchain in the public sector Nuryanti, Linda; Ayuningtyas, Fara; W. Sumunaringrum, Monica D.; Ruswendi, Wenwen; Srimoeljanto, Agoeng; Sutejo, Agus; Susanto, Triyono; Nurmayni, Ratna
Indonesian Journal of Electrical Engineering and Computer Science Vol 40, No 3: December 2025
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijeecs.v40.i3.pp1517-1530

Abstract

Blockchain technology has become a transformative innovation in the digital governance landscape, offering new opportunities to enhance transparency, accountability, and citizen trust. This study offers an extensive bibliometric and thematic examination of international research on blockchain in E-governance from 2019 to 2024. Using data from the Scopus database, the analysis examines publication trends, leading countries, collaboration networks, and the intellectual structure of the field. The findings reveal that research output has grown steadily, dominated by technologically advanced nations such as China, India, and the United Kingdom. The thematic mapping identifies core clusters, including transparency, E-government, and public sector innovation, alongside emerging themes such as artificial intelligence (AI) integration, smart cities, and digital transformation. By integrating bibliometric and thematic analyses, this study offers a comprehensive understanding of how blockchain research evolves within public governance. Despite significant progress, challenges remain, particularly regarding empirical validation, governance frameworks, and regional disparities in adoption. Future research should explore a more complex roadmap for blockchain implementation in government through three interrelated dimensions: technical development, policy and regulatory frameworks, and socio-institutional adaptation. This multidimensional perspective underscores blockchain’s capacity to support secure, inclusive, and data-driven forms of digital governance.
Co-Authors Agus Sutejo Ayuningtyas, Fara Nuryanti, Linda Priyo Wibowo, Priyo Ruswendi, Wenwen Srimoeljanto, Agoeng Susanto, Triyono W. Sumunaringrum, Monica D. Wildan, Muh