Articles
<![CDATA[BANDWIDTH ENHANCEMENT OF MICROSTRIP ANTENNA WITH SLIT AND PARASITIC ELEMENT FOR 5G COMMUNICATION ]]>
<![CDATA[Bernadus Kbato Seigi]]>;
<![CDATA[syah alam]]>;
<![CDATA[indra surjati]]>
<![CDATA[ JOURNAL OF INFORMATICS AND TELECOMMUNICATION ENGINEERING Vol 6, No 1 (2022): Issues July 2022 ]]>
Publisher : <![CDATA[Universitas Medan Area ]]>
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DOI: 10.31289/jite.v6i1.7003
<![CDATA[AbstrakSistem komunikasi generasi kelima (5G) telah diperkenalkan pada tahun 2018 dan memiliki kelebihan antara lain kecepatan transfer data yang tinggi serta bandwidth yang sangat lebar. Berdasarkan regulasi yang ditetapkan oleh frekuensi kerja yang digunakan untuk sistem komunikasi generasi kelima (5G) terbagi menjadi beberapa band yaitu untuk high band 28 GHz, middle band 15 GHz dan low band 3,5 GHz. Penelitian ini akan melakukan optimasi bandwidth . Penelitian ini mengusulkan optimasi bandwidth desain antena mikrostrip persegi panjang dengan metode slit, dan elemen parasitik pada frekuensi kerja 15 GHz untuk komunikasi 5G. Metode celah digunakan untuk meningkatkan nilaireturn loss sedangkan element parasitik digunakan untuk meningkatkan bandwidth dari antena yang diusulkan. Tujuan dari optimasi yang dilakukan untuk mendapatkan desain antena yang memiliki bandwidth yang lebar dan bekerja pada frekuensi 15 GHz dikarenakan pada penelitian sebelumnya optimasi bandwidth yang dilakukan hanya kurang dari 20%. Dari proses simulasi didapatkan peningkatan bandwidth sebesar 169,075% dan Return Loss meningkat sebesar 48,65%. Penelitian ini dapat direkomendasikan sebagai disain antena penerima pada sistem komunikasi generasi kelima (5G) dimana penambahan celah dan elemen parasitik dapat mengoptimasi bandwidth .Kata Kunci: antena, mikrostrip, slit, peningkatan bandwidth, elemen parasitik ]]>
<![CDATA[Pelatihan Perbaikan Peralatan Elektronika Rumah Tangga Untuk Warga Terdampak Banjir, Kelurahan Tanjung Duren Jakarta Barat ]]>
<![CDATA[Lydia Sari]]>;
<![CDATA[Syah Alam]]>;
<![CDATA[Indra Surjati]]>;
<![CDATA[Daisman P.B. Aji]]>
<![CDATA[ Jurnal Pengabdian Masyarakat Teknik Vol 5, No 1 (2022): Jurnal Pengabdian Masyarakat Teknik (JPMT) ]]>
Publisher : <![CDATA[Fakultas Teknik Universitas Muhammadiyah Jakarta ]]>
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DOI: 10.24853/jpmt.5.1.53-58
<![CDATA[Kota Administratif Jakarta Barat adalah wilayah yang rawan banjir, karena posisi geografisnya yang berada 7 meter di bawah permukaan laut serta dialiri oleh 23 sungai dan kanal. Kelurahan Tanjung Duren Utara yang merupakan daerah mitra kegiatan Pengabdian Kepada Masyarakat (PkM) ini terletak pada kota administratif Jakarta Barat dimana banjir terjadi hampir setiap tahun, walaupun telah dilakukan upaya pencegahan secara bersama-sama antara pemerintah dan warga. Ketinggian air saat banjir mencapai rerata 70 cm, sehingga potensi kerusakan pada peralatan rumah tangga cukup besar. Kegiatan PKM ini bertujuan untuk memberikan pelatihan mengenai cara perbaikan peralatan elektronika rumah tangga untuk warga yang terdampak banjir, di wilayah RT 0010 / RW 04, Kelurahan Tanjung Duren Utara, Kecamatan Grogol Petamburan, Jakarta Barat. Berdasarkan hasil post-test diketahui bahwa 75% responden yang mengikuti pelatihan masih belum sepenuhnya memahami bahaya yang timbul bila peralatan listrik terendam air. Rekomendasi yang diberikan adalah memberikan pelatihan dengan waktu lebih panjang dan kesempatan melakukan perbaikan sederhana dengan didampingi fasilitator.]]>
<![CDATA[Perancangan Antena Mikrostrip Circular Patch dengan Inset-Feed dan Array pada Frekuensi 3.5 GHz untuk Sistem Komunikasi 5G ]]>
<![CDATA[Agam Yudi Putranto]]>;
<![CDATA[Syah Alam]]>;
<![CDATA[Indra Surjati]]>;
<![CDATA[Yuli Kurnia Ningsih]]>;
<![CDATA[Lydia Sari]]>;
<![CDATA[Permana Andi Paristiawan]]>
<![CDATA[ Techné : Jurnal Ilmiah Elektroteknika Vol. 22 No. 1 (2023) ]]>
Publisher : <![CDATA[Fakultas Teknik Elektronika dan Komputer Universitas Kristen Satya Wacana ]]>
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DOI: 10.31358/techne.v22i1.353
<![CDATA[Penelitian ini mengusulkan rancangan suatu antena yang bekerja pada frekuensi 3.5 GHz yang digunakan untuk sistem komunikasi generasi kelima. Antena dirancang dengan substrat Duroid RO5880 yang memiliki spesifikasi konstanta dielektrik = 2.2, ketebalan substrat = 1.58 mm, dan loss tangent senilai 0,0009. Substrat duroid RO5880 dipilih karena memiliki nilai konstanta dielektrik yang kecil, sehingga losses antena dapat dikurangi. Antena yang dirancang memiliki gain yang tinggi dan pola radiasi yang terarah dengan metode inset feed dan metode array. Antena yang telah ditambahkan dengan metode inset feed dan metode array memiliki luas substrat sebesar 16.2 cm2, return loss -38.96 dB, VSWR 1.18, dan gain 13.03 dB pada frekuensi 3.5 GHz. Setelah menggunakan metode inset feed, nilai return loss berhasil tereduksi hingga 95.48%, mengalami kenaikan bandwidth hingga 4.06% dan dengan menggunakan metode array nilai gain mengalami peningkatan hingga 95.93% dibandingkan dengan antena elemen tunggal. Penelitian ini dapat dijadikan rekomendasi untuk disain antena penerima pada sistem komunikasi 5G.]]>
<![CDATA[Training on Making a Water Speed Detection Tool in Culverts for Early Detection of Flood Disasters in Tanjung Duren Village, DKI Jakarta ]]>
<![CDATA[Syah Alam]]>;
<![CDATA[Indra Surjati]]>;
<![CDATA[Lydia Sari]]>;
<![CDATA[Iwan Purwanto]]>;
<![CDATA[Farras Hamidah]]>;
<![CDATA[Samuel Netazi]]>;
<![CDATA[Tri swasono adi]]>
<![CDATA[ Dinamisia : Jurnal Pengabdian Kepada Masyarakat Vol. 7 No. 2 (2023): Dinamisia: Jurnal Pengabdian Kepada Masyarakat ]]>
Publisher : <![CDATA[Universitas Lancang Kuning ]]>
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DOI: 10.31849/dinamisia.v7i2.12345
<![CDATA[In early 2020, the Greater Jakarta area experienced severe flooding in several areas, one of which was the North Tanjung Duren Village, Grogol Petamburan District, West Jakarta. Based on BMKG data in February 2020, the Tanjung Duren Utara Urban Village area is a flood-prone area with a height of 10-30 cm and is also a densely populated settlement so that it is prone to short circuit hazards that can cause fires. One of the causes of flooding is water channels / culverts that do not flow smoothly. This activity proposes the creation of a water velocity detection device that functions as an early detection of flood disasters. The detection device is designed using a microcontroller and is connected to a sensor for detecting the speed of water flowing from the drain pipe in the culvert. Based on the results of the training provided, the community's improvement in early detection of flood disasters has increased as indicated by an increase in the post-test value of 52% compared to the pre-test value. This activity is very useful for flood-prone areas as an early detection approach.]]>
<![CDATA[Rancang Bangun Antenna Mikrostrip Peripheral Slits Linear Array Untuk Aplikasi Wi-Fi ]]>
<![CDATA[Syah Alam]]>;
<![CDATA[I Gusti Nyoman Yogi Wibisana]]>;
<![CDATA[Indra Surjati]]>
<![CDATA[ Jurnal Rekayasa Elektrika Vol 13, No 1 (2017) ]]>
Publisher : <![CDATA[Universitas Syiah Kuala ]]>
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DOI: 10.17529/jre.v13i1.5914
<![CDATA[Wireless Fidelity (Wi-Fi) is the modern telecommunication technology nowadays being so widely used and developed at operating frequency of 2.4 GHz, that needs microstrip antenna as best suited supporting means for transmitting and receiving data signals as well at its wave transceiver subsystem. The proposed antenna design were consists of four elements rectangular patch antenna with peripheral slits technique arranged in a linear array of 2x2 operating at the frequency of 2.4 GHz until 2.5 GHz. In addition to that, the feeding technique used in this research is microstrip fed line. The simulation from this research resulted in reducing the size of related antenna dimension up to 17% compared to that of four elements array without peripheral slits. It is also apparent that the bandwidth of the proposed antenna is 320 MHz (2.253 GHz–2.573 GHz) which is equivalent to bandwidth increase percentage of 13.07%, The simulation results in the center of frequency 2.448 GHz obtained return loss of -26.14 dB with a VSWR of 1.104. The measurement results obtained bandwidth of the proposed antenna is 150 MHz (2.424 GHz–2.574 GHz) which is equivalent to 12% increase of bandwidth percentage. The results of measurements process at the center of frequency 2.448 GHz obtained value of return loss of -16.88 dB with VSWR of 1.304.]]>
<![CDATA[Miniaturisasi Antena Mikrostrip Pencatu Ganda Menggunakan Metode Peripheral Slit ]]>
<![CDATA[Syah Alam]]>;
<![CDATA[Lydia Sari]]>;
<![CDATA[Indra Surjati]]>;
<![CDATA[Newton Onasie]]>
<![CDATA[ Jurnal Rekayasa Elektrika Vol 17, No 1 (2021) ]]>
Publisher : <![CDATA[Universitas Syiah Kuala ]]>
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DOI: 10.17529/jre.v17i1.17717
<![CDATA[This research proposes a dual-feed microstrip antenna using a peripheral slit for mobile communication systems. Miniaturization and reduction of the dual feed microstrip antenna’s size have been investigated and explained in this paper. The proposed antenna dimensions are reduced using three pairs of slits while the resonant frequency is 1800 MHz. Based on simulation and optimization results, the proposed antenna dimensions can be reduced by 94.81% compared to conventional multiple feed channel microstrip antennas. These results indicate that the peripheral slits technique has succeeded in reducing the proposed antenna dimensions without changing its frequency. We get a reflection coefficient of -31.65 dB, VSWR of 1,053 at a frequency of 1.95 GHz, and bandwidth of 206 MHz with a frequency range from the measurement process of 1.85 GHz–2.06 GHz with a bandwidth of 210 MHz. Impedance obtained from the proposed antenna is 47.72 ± j0.67 Ω at frequency 1.95 GHz. ]]>
<![CDATA[Polarisasi Melingkar Antena Mikrostrip E Shape Dengan Pencatu Electromagnetic Coupling ]]>
<![CDATA[Indra Surjati]]>;
<![CDATA[Syah Alam]]>;
<![CDATA[Saut Hotman]]>
<![CDATA[ Jurnal Rekayasa Elektrika Vol 13, No 1 (2017) ]]>
Publisher : <![CDATA[Universitas Syiah Kuala ]]>
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DOI: 10.17529/jre.v13i1.6006
<![CDATA[This paper proposed a new design of circular polarization E shaped patch microstrip antenna fed by proximity coupling for Wireless Fidelity applications at operating frequency of 2.4 GHz. To generate circular polarization in the proposed antenna, the next steps is making three slits on the patch antenna and with this embedded three slits produces antenna E shaped. Besides that, the proximity coupling fed line is used to increase the bandwidth of the proposed antenna. In this research the patch E shaped was put on the first substrate layer while the proximity coupling feeder was put on the second substrate layer. The substrate material used in this research is one of the two layers FR 4 Epoxy with relative dielectric constant ( r) of 4.4 and thickness (h) of 1.6 mm. The circular polarization can be achieved by adjusting the width and length of the E shaped antenna. The simulation of this research gave some important antenna parameters such as axial ratio value of 2.58 dB, return loss of -19.98 dB, VSWR of 1.223 and bandwidth of 151.3 MHz. Finally, its measurement results gave also some related comparative data such as return loss of -22.12 dB, VSWR of 1.16, bandwidth of 153.2 MHz, and Half Power Beamwidth of 580.]]>
<![CDATA[Performance Analysis of CRC-Polar Concatenated Codes ]]>
<![CDATA[Lydia Sari]]>;
<![CDATA[Masagus M. Ikhsan Assiddiq U.P.]]>;
<![CDATA[Syah Alam]]>;
<![CDATA[Indra Surjati]]>
<![CDATA[ JURNAL INFOTEL Vol 12 No 4 (2020): November 2020 ]]>
Publisher : <![CDATA[LPPM INSTITUT TEKNOLOGI TELKOM PURWOKERTO ]]>
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DOI: 10.20895/infotel.v12i4.494
<![CDATA[Polar code has been proven to obtain Shannon capacity for Binary Input Discrete Memoryless Channel (BIDMC) and its use has been proposed as the channel coding in 5G technology. However, its performance is limited in finite block length, compared to Turbo or LDPC codes. This research proposes the use of various CRC codes to complement Polar codes with finite block length and analyses the performance based on Block Error Rate (BLER) to Es/N0 (dB). The CRC codes used are of degrees 11 and 24, with 3 different polynomial generators for each degree. The number of bits in the information sequence is 32. The list sizes used are 1, 2, 4, and 8. Simulation results show that the concatenation of CRC and Polar codes will yield good BLER vs Es/N0 performance for short blocks of codeword, with rates 32/864 and 54/864. Concatenating CRC codes with Polar codes will yield a BLER performance of 10-2 with Es/N0 values of -9.1 to -7.5 dB when CRC codes of degree 11 is used, depending on the SC list used. The use of CRC codes of degree 24 enables a BLER performance of 10-2 with Es/N0 values of -7 to -6 dB when the SC list used is 1 or 2. The use of CRC codes of degree 24 combined with SC list with sizes 4 or 8 will improve the BLER performance to 10-2 with Es/N0 values of -8 to -7.5 dB]]>
<![CDATA[Rancang Bangun Antenna Mikrostrip Peripheral Slits Linear Array Untuk Aplikasi Wi-Fi ]]>
<![CDATA[Syah Alam]]>;
<![CDATA[I Gusti Nyoman Yogi Wibisana]]>;
<![CDATA[Indra Surjati]]>
<![CDATA[ Jurnal Rekayasa Elektrika Vol 13, No 1 (2017) ]]>
Publisher : <![CDATA[Universitas Syiah Kuala ]]>
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DOI: 10.17529/jre.v13i1.5914
<![CDATA[Wireless Fidelity (Wi-Fi) is the modern telecommunication technology nowadays being so widely used and developed at operating frequency of 2.4 GHz, that needs microstrip antenna as best suited supporting means for transmitting and receiving data signals as well at its wave transceiver subsystem. The proposed antenna design were consists of four elements rectangular patch antenna with peripheral slits technique arranged in a linear array of 2x2 operating at the frequency of 2.4 GHz until 2.5 GHz. In addition to that, the feeding technique used in this research is microstrip fed line. The simulation from this research resulted in reducing the size of related antenna dimension up to 17% compared to that of four elements array without peripheral slits. It is also apparent that the bandwidth of the proposed antenna is 320 MHz (2.253 GHz–2.573 GHz) which is equivalent to bandwidth increase percentage of 13.07%, The simulation results in the center of frequency 2.448 GHz obtained return loss of -26.14 dB with a VSWR of 1.104. The measurement results obtained bandwidth of the proposed antenna is 150 MHz (2.424 GHz–2.574 GHz) which is equivalent to 12% increase of bandwidth percentage. The results of measurements process at the center of frequency 2.448 GHz obtained value of return loss of -16.88 dB with VSWR of 1.304.]]>
<![CDATA[Miniaturisasi Antena Mikrostrip Pencatu Ganda Menggunakan Metode Peripheral Slit ]]>
<![CDATA[Syah Alam]]>;
<![CDATA[Lydia Sari]]>;
<![CDATA[Indra Surjati]]>;
<![CDATA[Newton Onasie]]>
<![CDATA[ Jurnal Rekayasa Elektrika Vol 17, No 1 (2021) ]]>
Publisher : <![CDATA[Universitas Syiah Kuala ]]>
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DOI: 10.17529/jre.v17i1.17717
<![CDATA[This research proposes a dual-feed microstrip antenna using a peripheral slit for mobile communication systems. Miniaturization and reduction of the dual feed microstrip antenna’s size have been investigated and explained in this paper. The proposed antenna dimensions are reduced using three pairs of slits while the resonant frequency is 1800 MHz. Based on simulation and optimization results, the proposed antenna dimensions can be reduced by 94.81% compared to conventional multiple feed channel microstrip antennas. These results indicate that the peripheral slits technique has succeeded in reducing the proposed antenna dimensions without changing its frequency. We get a reflection coefficient of -31.65 dB, VSWR of 1,053 at a frequency of 1.95 GHz, and bandwidth of 206 MHz with a frequency range from the measurement process of 1.85 GHz–2.06 GHz with a bandwidth of 210 MHz. Impedance obtained from the proposed antenna is 47.72 ± j0.67 Ω at frequency 1.95 GHz. ]]>
