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All Journal International Journal of Electrical and Computer Engineering TELKOMNIKA (Telecommunication Computing Electronics and Control) Sinergi JURNAL ELEKTRO Setrum : Sistem Kendali-Tenaga-elektronika-telekomunikasi-komputer Jurnal Teknologi Elektro ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Proceeding of the Electrical Engineering Computer Science and Informatics Al-Jabar : Jurnal Pendidikan Matematika JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING InComTech: Jurnal Telekomunikasi dan Komputer Matrix : Jurnal Manajemen Teknologi dan Informatika Techne : Jurnal Ilmiah Elektroteknika TESLA: Jurnal Teknik Elektro Jurnal Abdi Masyarakat (JAM) Jurnal Nasional Teknik Elektro dan Teknologi Informasi Jurnal Rekayasa elektrika Jurnal Teknik Elektro

Dian Widi Astuti, Budi Irawan Prima Putra, Dian Widi Astuti,

Universitas Mercu Buana

Author-ID : 524605

Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mathematics Mechanical Engineering

Published : 40 Documents Claim Missing Document

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Articles

Title

CASCADED SQUARE LOOP BANDPASS FILTER WITH TRANSMISSION ZEROS FOR LONG TERM EVOLUTION (LTE) Iis Andini; Dian Widi Astuti; Muslim Muslim
SINERGI Vol 22, No 1 (2018)
Publisher : Universitas Mercu Buana

In this paper, we present a bandpass filter that passed frequency of 1.7 GHz – 1.8 GHz. It is applied for an uplink frequency in 4G 1800MHz. This filter is created by using substrate PCB TMM-10i and has a compact size of 42 mm x 42 mm. The compact size is also important besides selectivity. The selectivity is achieved by implementing cascade square loop resonator method which generated transmission zeros. Actually, transmission zeros are obtained from the coupled resonator. The bandpass filter is designed by adding an external resonator on each square of the resonator loop and a patch to the inside of the square loop resonator. The parameter performances are simulated by HFSS. The parameter performances for return loss value is 14.24 dB at frequency 1.75 GHz and insertion loss value is 0.65 dB at frequency 1.75 GHz. By using VNA Anritsu MS 2026A, prototype bandpass filter is measured. The measurement results for return loss value is 6.8 dB and insertion loss value is 2.2 dB.

PERANCANGAN DAN PENGUJIAN MINIATUR LIFT BERBASIS ARDUINO DENGAN MENGGUNAKAN RFID SEBAGAI SISTEM IDENTIFIKASI LANTAI Beny Nugraha; Yudistiro Yudistiro; Dian Widi Astuti; Setiyo Budiyanto
SINERGI Vol 19, No 3 (2015)
Publisher : Universitas Mercu Buana

Lift biasa diaplikasikan di gedung-gedung bertingkat merupakan pengembangan dari katrol yang menggunakan energi listrik untuk menggerakkannya dari satu lantai ke lantai yang lain. Penggunaan lift masih menggunakan tombol sebagai penanda lantai, di mana setiap orang yang masuk ke dalam lift dapat menekan tombol lantai yang ingin mereka tuju. Hal ini akan membuat privasi para penghuni di apartemen tersebut menjadi terganggu dan terbuka peluang seorang penyusup yang berniat jahat terhadap penghuni apartemen. Untuk mengatasi masalah tersebut, penelitian ini membuat sebuah miniatur lift berbasis Arduino Uno dengan menggunakan kartu RFID sebagai penanda setiap lantai. Setiap penghuni apartemen memiliki kartu RFID yang berisikan data lantai kamar mereka masing-masing. Hasil pengujian yang didapatkan, dengan menggunakan sistem indentifikasi kartu RFID, lift hanya bergerak ke lantai yang sesuai dengan kartu RFID tersebut sehingga para penghuni apartement dapat langsung menuju ke kamarnya masing–masing tanpa perlu menekan tombol lantai. Untuk pengujian waktu tempuh miniatur lift ini, didapatkan hasil waktu tempuh rata-rata lift bergerak dari satu lantai ke lantai yang lain adalah 1 menit dan 34 detik.

BANDWIDTH AND GAIN ENHANCEMENT OF MICROSTRIP ANTENNA USING DEFECTED GROUND STRUCTURE AND HORIZONTAL PATCH GAP Dian Rusdiyanto; Catur Apriono; Dian Widi Astuti; Muslim Muslim
SINERGI Vol 25, No 2 (2021)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2021.2.006

This research proposed microstrip antenna design using the Defected Ground Structure (DGS) and horizontal patch gap (HPG) for bandwidth and enhancement purposes. This design is to reduce the weakness of a microstrip antenna, which has small gain and narrow bandwidth. The design was simulated in CST Microwave Studio with a working frequency of 2.4 GHz. The design consists of three stages model, i.e., conventional design, DGS modification, and the combination DGS using a Horizontal Patch Gap (DGSHPG). The radius of the conventional circular patch is 16.7 mm. The substrate has 4.6 of dielectric constant, 1.6 of substrate height, and 0.025 of the loss tangent. The simulation results show that the DGS design produces more bandwidth and gain than a conventional design, where the bandwidth and gain improvement are 421.2 MHz and 1.73 dB, respectively. The DGS model is combined with a gap that separates the circular patch (DGSHPG) to achieve the optimum design. The results show the bandwidth and gain improvement of more than 50% and 18.1% compared to the DGS design, respectively. Other parameter performance also shows improvement, such as a reflection factor with -53.3 dB at the center frequency. The physical change also influences the patch’s radius, where it is reduced around 1.4 mm or 8.4% from the original design. Overall, the proposed design has succeeded in achieving bandwidth and gain enhancement and reducing the patch dimension.

Broadband HMSIW antenna using a demi hexagonal ring slot for X-band application Astuti, Dian Widi; Muslim, Muslim; Umaisaroh, Umaisaroh; A Majid, Huda; Alam, Syah
SINERGI Vol 29, No 1 (2025)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2025.1.008

Microstrip antennas offer several advantages, including small size, easy fabrication, controllable polarity and radiation patterns, and easy integration with other components. These qualities make microstrip antennas more reliable than other antenna types. However, they also have limitations, such as lower radiation efficiency and narrow bandwidth, primarily due to the thin substrate thickness. Substrate integrated waveguide (SIW) is a type of microstrip antenna. SIW antennas come in two forms: one with a rectangular shape, typically designed as a slot, and the other in the form of a horn. However, SIW slot antennas face challenges with narrow impedance bandwidth due to the thin substrate, unlike conventional bulky hollow waveguides. The half-mode substrate integrated waveguide (HMSIW) slot antenna, which is a 50% miniaturized version of the SIW slot antenna, also suffers from reduced fractional bandwidth, resulting from the miniaturization and the thin substrate. This paper focuses on enhancing the bandwidth of HMSIW antennas by incorporating a demi-hexagonal ring slot. The broadband impedance bandwidth simulation (27.36%) is achieved through triple resonance frequencies to address the issue of narrow impedance bandwidth. Both the simulation results and measurements show consistency, with the measured impedance bandwidth ranging from 8.91 to 12.62 GHz (34.46%), demonstrating at least triple resonance frequencies.

An ultra-broadband microstrip antenna using a triple dumbbell-shaped defected ground structure Haryanto, Puji; Astuti, Dian Widi; Alaydrus, Mudrik; Firdausi, Ahmad; Rusdiyanto, Dian; A Majid, Huda
SINERGI Vol 30, No 1 (2026)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/sinergi.2026.1.008

Microstrip antennas are widely used in modern communication systems due to their compact size and low profile. However, they typically suffer from narrow bandwidth, limiting their performance in advanced wireless applications. This study addresses this limitation by employing a triple dumbbell-shaped defected ground structure (DGS). The antenna is designed to operate at 3.5 GHz using a Rogers RT5880 substrate, and its performance was analyzed through simulations in HFSS 15.0 software. Without the DGS, the antenna exhibits a fractional bandwidth (FBW) of only 1.71%, operating from 3.47 GHz to 3.53 GHz. Incorporating the triple dumbbell-shaped DGS in the ground layer increases the FBW significantly to 53.6%, extending the operating frequency range from 2.39 GHz to 4.14 GHz. This improvement was achieved through the careful optimization of DGS parameters. The simulated gain at 3.5 GHz is 5.13 dBi. The proposed design demonstrates superior performance compared to conventional techniques such as split-ring resonators (SRR) and Butler matrix (BM) configurations. Simulation and measurement results show excellent agreement, validating the design. The achieved ultra-wideband performance benefits 5G and next-generation systems, offering greater frequency tolerance, diverse signal support, increased capacity, and reliable operation, making the antenna a promising candidate for future wireless applications.

Co-Authors A Majid, Huda A.A. Ketut Agung Cahyawan W Achi Rinaldi Adhiyoga , Yohanes Galih Adhiyoga, Yohanes Galih Ahmad Firdausi Ali Djamhuri Alven Delano Alya Patrakomala Amtsaluddin Zanetti Andika Eko Prasetiyo, Andika Eko Ardiansyah Ardiansyah Beny Nugraha Budi Irawan Prima Putra Cahyasiwi, Dwi Astuti Catur Apriono Darmanik, Sis Yasin Dewi Nusraningrum, Dewi Didik Aribowo Dwi Astuti Cahyasiwi Dwi Maya Nursyswanti Fatimah, Okis Firmansyah, Mu'min Galang Persada Nurani Hakim Galih Adhi Yoga Haryanto, Puji Herudin Herudin Iip Sugiharta Iis Andini Iis Andini, Iis Indra Dermawan Indra Surjati Intan Wahyuni Joranto Walesian Kusuma, Prima Wijaya Lydia Sari Mahendra, Dendi Majid, Huda A Majid, Huda A. Marnel, Sonfia Putra Muchamad Yunus Mudrik Alaydrus Muslim , Muslim Muslim Muslim Muslim Muslim Muslim Muslim Muslim Muslim Muslim Muslim Muslim, Muslim Naufal Rizki Rinditayoga Putri, Melinda Megahari R. Deiny Mardian Wijayapraja Rizki Ramadhan Putra Rusdiyanto, Dian Said Attamimi Sawarni Hasibuan Septian, Agung Setiyo Budiyanto Sis Yasin Darmanik Suherman, Suherman Supriyanto Praptodiyono Suryadi Suryadi Syah Alam Syah Alam Syah Alam Syamsul Huda Teguh Firmansyah TOGATOROP, SRI ARTHA Triya Agung Pahlevi Trya Agung Pahlevi Tulha, Luki Lukman Umaisaroh Umaisaroh Yudistiro Yudistiro Yudistiro Yudistiro, Yudistiro Yuli Kurnia Ningsih Yundari, Yundari Yus Natali Zahriladha Zakaria

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