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All Journal TELKOMNIKA (Telecommunication Computing Electronics and Control) Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Setrum : Sistem Kendali-Tenaga-elektronika-telekomunikasi-komputer JURNAL NASIONAL TEKNIK ELEKTRO Proceeding of the Electrical Engineering Computer Science and Informatics JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING JTERA (Jurnal Teknologi Rekayasa) Techne : Jurnal Ilmiah Elektroteknika Dinamisia: Jurnal Pengabdian Kepada Masyarakat JURNAL KAJIAN TEKNIK ELEKTRO Jurnal Teknik Abdimas Umtas : Jurnal Pengabdian kepada Masyarakat TEKTRIKA - Jurnal Penelitian dan Pengembangan Telekomunikasi, Kendali, Komputer, Elektrik, dan Elektronika Jurnal Pengabdian Masyarakat IPTEKS Jurnal Pengabdian Masyarakat Teknik Reswara: Jurnal Pengabdian Kepada Masyarakat JITEL (Jurnal Ilmiah Telekomunikasi, Elektronika, dan Listrik Tenaga) Jurnal Rekayasa elektrika Jurnal INFOTEL

Indra Surjati

Universitas Trisakti

Author-ID : 2452383

Religion Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mechanical Engineering Social Sciences Other

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Miniaturized Minkowski-Island Fractal Microstrip Antenna Fed by Proximity Coupling for Wireless Fidelity Application I Putu Elba Duta Nugraha; Indra Surjati; Syah Alam
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 15, No 3: September 2017
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v15i3.6826

This paper proposed a new design of Minkowski Island microstrip antenna fed by proximity coupling with partial ground plane. The design was consisted of two layers of substrate, on the top substrate was the antenna patch and on the bottom substrate was the proximity feed line and the partial ground. At the first stage, the normal square patch antenna was mainly designed. Then, the Minkowski patch antenna was designed using 1st iteration technique and 2nd iteration technique. The Minkowski fractal shape slot was embedded in the center of the patch to form a Minkowski Island patch antenna. Using the Minkowski Island fractal technique, the dimension of the patch can be reduced up to 58.7%. The proximity feed line in this design was used to increase the impedance bandwidth, and from the measurement the impedance bandwidth of the proposed antenna was 240 MHz with return loss of -24.54 dB and VSWR of 1.126.

Design of spiral labyrinth microstrip antenna for DVB-T application Indra Surjati; Syah Alam; Juliarto Karnadi
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 17, No 1: February 2019
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v17i1.11628

Digital television broadcasting is technologies that have been developed by any country in the world. The advantages implementations of digital television broadcasting include reception of picture and sound sharper and better. This paper proposes a new design of spiral labyrinth microstrip antenna feed by microstrip line with array two element for Digital Video Broadcasting Technology (DVB-T) application at work frequency of 586 MHz. The design of spiral labyrinth is used to minimize the dimensions of microstrip patch antenna while maintaining the working frequency at 586 MHz and array technique used to improve gain of antenna. The proposed antenna design was originally a rectangular patch that has been modified by the labyrinth spiral method. From the measurement result obtained return loss of -14.15 dB and VSWR of 1.54 at working frequency of 586 MHz. Bandwidth of proposed antenna is 117 MHz (547 MHz–664 MHz) while gain of antenna is 7.78 dBi. Beside that, using of the labyrinth spiral patch successfully reduced the dimensions of the microstrip antenna until 62.2% compared with the conventional rectangular patch of microstrip antenna. This study is usefull for DVB-T application in order to achieve the maximum signal quality and picture.

Miniaturization of Microstrip Antenna Using Spiral labyrinth Method at Frequency of Work 3.5 GHz Diah Setiyowati; Syah Alam; Indra Surjati
JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING Vol 5, No 2 (2022): Issues January 2022
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jite.v5i2.5650

Along with the times, communication technology has developed so that it is currently included in the Fifth Generation (5G) Communication System. The 5G communication system is divided into three frequency categories, namely low band, middle band and high band. One of the important devices in the telecommunications sector is the antenna. Antenna serves to send and receive electromagnetic signals at a certain working frequency. Currently, antennas have been completely integrated into the needs of modern society. One type of antenna that can support the needs of today's technology is a microstrip antenna. This antenna has several advantages, especially in its antenna compact design, low profile configuration and affordable manufacturing costs. In this article, a microstrip antenna is designed with the spiral labyrinth method that works at a frequency of 3.5 GHz for 5G communication system. Propsosed antena designed using RT Duroid R5880 with dielectric constant ( ) 2.2, dielectric loss (loss tan) 0.0009 and thickness (h) 1.57 mm. The simulation results show the reflection coefficient -29.58 dB, VSWR 1.069, gain 6.432 dB at frequency of 3.5 GHz . Spiral labyrinth has been succesfully reduced patch antenna and enclosure until 22.5% and 24.8%, respectively.

Design of 2x1 MIMO Microstrip Antenna Using Slit and Inset Technique For 5G Communication Fahrul Solehudin; Zikra Aulia Sanaz; Syah Alam; Lydia Sari; Indra Surjati
JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING Vol 5, No 1 (2021): EDISI JULY 2021
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jite.v5i1.5129

The fifth generation (5G) technology offers high speed communication systems and requires a multi input and multi output (Multiple Input Multiple Output / MIMO) antenna system to increase customer capacity. This research proposes a microstrip antenna design for a fifth-generation (5G) communication system that works at a frequency of 3.5 GHz. The antenna was designed using the RT-Duroid R5880 substrate type with dielectric constant (εr) = 2.2, thickness (h) = 1.57 mm and loss tan (tan α) = 0.0009. To produce optimal parameter, the antenna is optimized using slit on the edge with a total of 2 pairs. The addition of an inset aims to reduce the reflection coefficient of the proposed antenna. From the simulation results, the reflection coefficient value is -25 dB at a frequency of 3.5 GHz with a bandwidth of 220 MHz. The gain of the proposed antenna is 10 dB at a frequency of 3.5 GHz. The isolation coefficient obtained is -70 dB with a distance between (d) = 43 mm. The application of the MIMO antenna increases the gain by 49.52% compared to the single element microstrip antenna.

Microstip Antenna Reflection Coefficient with X Slot Addition Method for 5G Connection Yessi Kartini Gultom; Syah Alam; Indra Surjati
JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING Vol 5, No 2 (2022): Issues January 2022
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jite.v5i2.5944

The development of cellular technology has now entered the 5th generation (5G), this 5th generation provides 3 types of services, eMBB (enhanced Mobile BroadBand), URLLC (Ultra-Reliable and Low-Latency Communications) and mMTC (massive Machine Type of Communications). One of the important devices in 5G technology is an antenna device which is able to support these 3 services. 5G technology requires an antenna that has high performance. There are various types of antennas, one of which is a microstrip antenna. Microstrip antenna is one of the most widely used antennas in telecommunications because of its light mass, small dimensions and easy fabrication. There are various ways or methods that can be done to overcome the narrow bandwidth of microstrip antennas, by increasing the thickness of the substrate, using parasitic elements, reducing the value of the dielectric constant, adding inserts to the feeder, or by modifying the patch by adding slots on the patch antenna. In this study to improve the performance value of the microstrip antenna, the researchers discussed increasing the reflection coefficient by adding X Slots to a microstrip antenna with a working frequency of 3.5 GHz for 5G communication. The results of this study showed an increase in the reflection coefficient of 67%, and an increase in bandwidth of 5%.

Design and Realization of Compact Microstrip Antenna Using Fractal Sierpenski Carpet For Wireless Fidelity Application Syah Alam; Indra Surjati; Awang Ferawan; Teguh Firmansyah
Indonesian Journal of Electrical Engineering and Informatics (IJEEI) Vol 6, No 1: March 2018
Publisher : IAES Indonesian Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52549/ijeei.v6i1.390

This paper proposed new design of compact microstrip antenna using fractal sierpenski carpet method for Wireless Fidelity application at working frequency of 2400 MHz. The proposed antenna using FR4 Epoxy with (εr) of 4.3, substrate thickness (h) of 1.6 mm and loss tangent (tan δ) of 0.0265. Antenna is designed using AWR Microwave Office software.The sierpenski carpet method is used in order to reduce the dimensions of the microstrip antenna to become more compact. From the measurement results obtained reflection coefficient value -26.077 dB, VSWR 1.104 at working frequency of 2400 MHz frequency with a bandwidth of 127 MHz (2338 MHz – 2465 MHz). Beside that, by using fractal sierepenski carpet method, microstrip antenna dimension was reduced until 47.80% compared to conventional rectangular microstrip antenna.

Perancangan Antena Mikrostrip Segiempat Peripheral Slit untuk Aplikasi 2,4Ghz dengan Metode Pencatuan Proximity Coupled Rico Bernando Putra; Syah Alam; Indra Surjati
JURNAL NASIONAL TEKNIK ELEKTRO Vol 7, No 1: March 2018
Publisher : Jurusan Teknik Elektro Universitas Andalas

Microstrip antenna is one of the fastest growing antennas in telecommunication system. Microstrip antenna has been widely used because it has many advantages such as a compact, practical and easy to adjusting polarize, commonly applied to modern telecommunications equipment today. This paper aims to create a rectangular microstrip patch antenna that works at a 2.4 GHz frequency for Wireless Fidelity (Wi-Fi) applications. In the technique of feeder is used the proximity feeders to increase bandwidth and maintain a small return loss. In this antenna design is used some software as aid in making antenna, that is PCAAD and AWR Design Environment 2009. The result obtained from design of this antenna is antenna work at frequency 2,244 GHz - 2,537 GHz with VSWR at value 1.013 and gain at value 5.532 dB and Return Loss at -43.85 dB.Keywords : Microstrip Antenna, Rectangular, Proximity, VSWR, Return Loss, Wi-Fi AbstrakAntena mikrostrip saat ini merupakan salah satu antenna yang sangat pesat perkembangannya dalam sistem telekomunikasi. Antena mikrostrip telah banyak digunakan karena memiliki banyak keuntungan seperti bentuknya yang ringkas, praktis dan mudah untuk mengatur polarisasinya, sehingga banyak diaplikasikan pada peralatan-peralatan telekomunikasi modern saat ini. Pada tulisan ini, dirancang sebuah antena mikrostrip patch segiempat yang bekerja pada frekuensi 2,4 GHz untuk aplikasi Wireless Fidelity (Wi-Fi). Dalam teknik pencatuannya digunakan pencatuan proximity coupled yang bertujuan untuk meningkatkan bandwidth dan menghasilkan return loss ≤ -10 dB dan VSWR ≤ 2 . Pada perancangan antena ini digunakan beberapa perangkat lunak sebagai bantuan dalam pembuatan antena, diantaranya PCAAD dan AWR Design Environment 2009. Hasil yang diperoleh dari rancang bangun antena ini adalah antena bekerja pada frekuensi 2,244 GHz - 2,537 GHz dengan VSWR pada nilai 1,013 dan Gain pada nilai 5,532 dB dan Return Loss pada nilai -43,85 dB.Kata Kunci : Antena Mikrostrip, Rectangular, Proximity, VSWR, Return Loss, Wi-Fi

Compact Fractal Patch Microstrip Antenna Fed by Coplanar Waveguide for Long Term Evolution Communications Indra Surjati; Yuli Kurnia Ningsih; Syah Alam
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 4: EECSI 2017
Publisher : IAES Indonesia Section

This paper proposes a new design of compact fractal patch microstrip antenna fed by coplanar waveguide to reduce the antenna dimension and to increase its bandwidth for Long Term Evolution application purposes. The results shown return loss of -23.45 dB and VSWR 1.144 can be achieved by controlling the height and the width of the fractal patch dimension. Bandwidth of the proposed antenna is 375 MHz which is equal to an increase of 200% compared to the conventional rectangular patch antenna and also the dimension of fractal patch antenna can be reduced until 66%.

Perancangan Antena Mikrostrip Patch Circular (2,45 GHz) Array dengan Teknik Pencatu Proximity Sebagai Penguat Sinyal Wi-Fi Arfan Akbar; Syah Alam; Indra Surjati
Setrum : Sistem Kendali-Tenaga-elektronika-telekomunikasi-komputer Vol 6, No 2 (2017): Edisi Desember 2017
Publisher : Fakultas Teknik Elektro - Universitas Sultan Ageng Tirtayasa

Pada penelitian ini dilakukan perancangan antena mikrostrip dengan bentuk patch circular menggunakan substrat jenis FR-4 Epoxy dengan nilai ɛr=4,3 h=1,6mm dan loss tangen = 0,0265. Untuk meningkatkan nilai gain, maka dilakukan optimasi dengan menggunakan metode array 2x1. Selanjutnya, untuk memperlebar Bandwidth, digunakan pencatu dengan teknik proximity. Tujuan dari penggunaan metode array dan proximity ini untuk meningkatkan nilai Gain dan Bandwidth. Dari hasil simulasi diperoleh nilai Return Loss -19,85 dB, VSWR 1,227 dan Gain 7,091 dB pada frekuensi 2450 MHz. Dengan data tersebut, maka metode array dapat meningkatkan Gain sebesar 38% dan dengan penggunaan metode Proximity dapat meningkatkan Bandwidth sebesar 162%.

Miniaturisasi antena mikrostrip array 4×1 elemen menggunakan teknik peripheral slits : Miniaturization of 4×1 element microstrip array antenna using peripheral slit technique Tiara Kartika Putri; Syah Alam; indra surjati
JITEL (Jurnal Ilmiah Telekomunikasi, Elektronika, dan Listrik Tenaga) Vol. 1 No. 2: September 2021
Publisher : Jurusan Teknik Elektro, Politeknik Negeri Bandung

Sistem komunikasi WiFi telah banyak digunakan dalam kebutuhan sehari-hari antara lain untuk keperluan koneksi dan jaringan internet. Dalam penelitian ini, dilakukan miniaturisasi dari antena mikrostrip array linier 4×1 elemen yang bekerja pada frekuensi 2,4 GHz. Pereduksian antena dilakukan dengan metode simulasi dengan penambahan peripheral slits. Efek dari penambahan slit pada patch antena dapat menggeser frekuensi kerja antena menjadi lebih besar sehingga untuk mengembalikan antena pada frekuensi kerjanya dilakukan miniaturisasi dimensi patch antena. Dari hasil simulasi dan optimasi, didapatkan hasil desain yang paling optimal adalah antena mikrostrip patch array 4×1 dengan 16 slit. Penambahan jumlah slit menunjukan dimensi antena berhasil direduksi sebesar 20,45% dengan ukuran patch 28 mm x 20 mm. Nilai koefisien refleksi yang didapatkan sebesar -16,31 dB, gain sebesar 6,43 dB, dan VSWR 1,36 pada frekuensi kerja 2,4 GHz. Penelitian ini bermanfaat sebagai usulan disain antena penerima untuk sistem komunikasi WiFi.

Co-Authors Agam Yudi Putranto Arfan Akbar Aulia Anindya Dhanyswari Awang Ferawan Bernadus Kbato Seigi Chairul Rizki Daisman P.B. Aji Daisman Purnomo Bayyu Aji Diah Setiyowati Dwindary Annisah Fahrul Solehudin Farras Hamidah Galang Trihantoro Gunawan Tjahjadi I Gusti Nyoman Yogi Wibisana I Putu Elba Duta Nugraha Iwan Purwanto Juliarto Karnadi Kurnia Ningsih, Yuli Lydia Sari M.Ikhsan Assiddiq Utama Putra Maria Immaculata Lisa Prasetyani Masagus M. Ikhsan Assiddiq U.P. Muhammad Ilham Muhammad Zulfadli Nadia Media Rizka Newton Onasie Permana Andi Paristiawan Pipit Dewi Marlina Pudji Astuti Rico Bernando Putra Rizka Shafira Samuel Netazi Saut Hotman Sentot Novianto Simon Jansen Saragi Syah Alam Syah Alam Syah Alam Teguh Firmansyah Tiara Kartika Putri Tri swasono adi Wahyu Ibrahim William Kristianto Wirdatul Usrah Yessi Kartini Gultom Zikra Aulia Sanaz

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