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All Journal Pillar of Physics: Jurnal Berkala Ilmiah Fisika Jurnal Pengabdian Masyarakat
Bastian Wahyudi
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Religion Computer Science & IT Earth & Planetary Sciences Education Library & Information Science Materials Science & Nanotechnology Physics Social Sciences

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Simulation of circular polarized microstrip antenna for circularly polarized - synthetic aperture radar (CP-SAR) Bastian Wahyudi; Asrizal Asrizal; Yohandri Yohandri
PILLAR OF PHYSICS Vol 9 (2017)
Publisher : Department of Physics – Universitas Negeri Padang UNP

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (711.176 KB) | DOI: 10.24036/2501171074

Abstract

Remote sensing technology is important to determine the geography information. Based on the sensor used, remote sensing can be divided into two types namely optical and radar. Radar-based remote sensing is more suitable for use in parts of Indonesia when compared to using an optical sensing, because of Indonesia has a large enough cloud cover. One type of radar sensor is a sensor Synthetic Aperture Radar (SAR). SAR sensors are generally operated in the linear polarization. When propagating in the ionosphere, micro wave with linear polarization will be disturbed by the effects of Faraday rotation. The impact of the effects of Faraday rotation can be reduced by emitting microwaves in circular polarization -CP. The signal quality of the CP can be described by a parameter called axial ratio. This study simulates antenna design to determine the effect of the dimensions of the antenna on the antenna characteristics. The simulation was performed by varying the length of the patch, the width of feeding and truncated junction on the patch antenna. Antenna dimension is obtained will be used as a reference in determining the dimensions of the antenna for the CP-SAR. The device used in this simulation is IE3D with the type of substrate pillar packing (NPC-H220A) with 2,17 dielectric constant of 3,2 mm thickness and loss δ = 0.0005. From the simulations, it can bestated two of research result. First, that the correlation between the length of the patch and the operating frequency of the antenna is comparable as well as the width of feeding and the input impedance. Second, the antenna dimensions are used to determine the model of the characteristics of the antenna for applications CP - SAR at 1,270 GHz operating frequency with a value of 50,54 Ω input impedance, VSWR of 1,053 and 1,1288 dB axial ratio
Pengembangan Website UMKM Pempek Madam Jambi Sebagai Media Informasi, Pemasaran dan Promosi Febby Lutvianita; Ari Setiya Ningsih; Irfan Roihansyah Harahap; Tri Sherina; Bastian Wahyudi; Daniel Arsa; Dewi Lestari
Jurnal Pengabdian Masyarakat Vol. 3 No. 2 (2024): Desember 2024
Publisher : Unity Academy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70340/japamas.v3i2.159

Abstract

The community service project aimed to assist Pempek Madam Jambi, a micro, small, and medium enterprise (MSME) in Jambi specializing in authentic Jambi-style pempek. The project addressed marketing and promotion challenges, as the MSME previously relied solely on Instagram and WhatsApp for sales and visibility. The initiative involved creating a website to serve as a marketing, promotional, and informational platform. The development process began with a needs analysis conducted through interviews with the business owner, followed by designing wireframes using Figma, website development via Canva Web, testing, and publishing the website. The website includes features such as a homepage, about us, menu listing, ordering platform, FAQ, articles, and SEO components to enhance product visibility. As a direct outcome, the website significantly improved the business’s digital presence and customer engagement. The project also conducted training involving five participants, including students, on digital marketing and website maintenance, enabling the MSME to sustain the platform independently. The initiative demonstrated a measurable impact, as online visibility increased by 87%, as indicated by user satisfaction feedback during website testing. This project serves as a scalable model for other MSMEs in Jambi, contributing to the broader agenda of MSME digital transformation in Indonesia.
Co-Authors Ari Setiya Ningsih Asrizal Daniel Arsa Dewi Lestari Febby Lutvianita Irfan Roihansyah Harahap Tri Sherina Yohandri