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All Journal TELKOMNIKA (Telecommunication Computing Electronics and Control) International Journal Software Engineering and Computer Science (IJSECS)
Yuli Kurnia Ningsih
Trisakti University
Computer Science & IT

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Low Mutual Coupling Dualband MIMO Microstrip Antenna with Air Gap Parasitic Yuli Kurnia Ningsih; Rastanto Hadinegoro
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 12, No 2: June 2014
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v12i2.50

Abstract

Long Term Evolution (LTE) is a standard for wireless communication of high-speed data for mobile phones and data terminals. Due to the LTE standard covers a range of many different bands in each country, therefore an antenna with more than one frequency bands become one of the most important needs in LTE antenna. In this paper, a novel triangular dual band MIMO (2x2) antenna with coplanar waveguide (CPW) fed is proposed to be used for LTE application. The proposed MIMO antenna is able to work in dual frequency that will be implemented in Indonesia at 1.8GHz and 2.35GHz. To obtain the optimum design, the characteristic of proposed antenna are numerically investigated through the physical parameters of antenna. The results show that proposed antenna has a compact size and a bandwidth of 100 MHz which is suitable for LTE application
Comparative Performance Analysis of Integrated Monitoring Engine for Electric Energy Transaction Data Gateway Infrastructure to Accelerate SLA Incident Resolution Pipit Suryandani; Yuli Kurnia Ningsih; R. Deiny Mardian
International Journal Software Engineering and Computer Science (IJSECS) Vol. 6 No. 1 (2026): APRIL 2026
Publisher : Lembaga Otonom Lembaga Informasi dan Riset Indonesia (KITA INFO dan RISET) - Lembaga KITA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/ijsecs.v6i1.7151

Abstract

PLN Icon Plus operates the Energy Transaction Data Gateway as the sole intermediary between banking partners and the national P2PST core server — an architecture where monitoring failure carries direct consequences for millions of daily transactions. Prior to this study, the monitoring ecosystem operated across three isolated platforms: Huawei iMaster NCE-Fabric for network telemetry, Zabbix for server resource metrics, and Elastic Stack (ELK) for application log management, with no automated correlation between them. This study developed an integrated monitoring system on the Grafana platform that unifies these heterogeneous data sources into a Single Pane of Glass dashboard. The architecture employs NTP-calibrated timestamp alignment and data normalization to ensure cross-platform event correlation accuracy at sub-100 millisecond precision. A unified alerting system was deployed via Telegram Bot API using multi-condition severity thresholding, requiring confirmed cross-layer correlation before notification dispatch to prevent alert fatigue. Comparative performance validation against the pre-implementation siloed condition — based on 69 documented production incidents from January to March 2026 — confirmed a 63.6% reduction in overall Mean Time to Repair (MTTR) and a 79.2% reduction in network incident MTTR specifically. SLA availability improved from 99.71% to 99.94%, surpassing the 99.9% contractual target. The primary contribution is a cross-layer data correlation model that measurably compresses the fault identification phase within national energy transaction infrastructure, validated through both statistical analysis and a structured questionnaire survey across 56 respondents.
Co-Authors Pipit Suryandani R. Deiny Mardian Rastanto Hadinegoro