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Desain dan Realisasi Antena Mikrostrip Patch Persegi Susunan Linier dengan Teknik Pencatuan Proximity Coupled pada Frekuensi 4 ,3 GHz untuk Radio Altimeter Pesawat Amrullah, Yahya Syukri; Santiko, Arief Budi; Prabowo, Bayu Heri; Wahyu, Yuyu
Jurnal Elektronika dan Telekomunikasi Vol 16, No 2 (2016)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (574.398 KB) | DOI: 10.14203/jet.v16.33-39

Abstract

Pada penelitian ini telah dilakukan perancangan, simulasi, dan realisasi antena mikrostrip array dengan catuan proximity coupling untuk aplikasi radio altimeter. Penentuan nilai dimensi antena dilakukan dengan menggunakan rumus-rumus antena mikrostrip. Nilai-nilai dimensi yang telah diperoleh kemudian disimulasikan dengan simulator elektromagnetik untuk memperoleh performansi yang dihasilkan. Selain itu, proses simulasi juga digunakan untuk mengoptimasi desain antena. Antena yang dirancang mampu bekerja pada frekuensi 4,3 GHz, dengan return loss< -10 dB, VSWR < 2, bandwidth 100 MHz, gain ≥ 9,25 dBi, pola radiasi unidirectional, dan polarisasi linier. Substrat yang digunakan adalah Rogers RT5880 yang memiliki permitivitas relatif sebesar 2,2 dan ketebalan sebesar 1.57 mm. Antena yang terealisasi bekerja pada frekuensi tengah 4,3 GHz yang menghasilkan VSWR 1,005, polarisasi elips, gain 13,46 dB, pola radiasi unidirectional, impedansi 50,113 - j228,123 mOhm, return loss -51,890 dB, dan effective bandwidth 286 MHz (4,175-4,461 MHz).
Design and Realization of Coupled Line Bandpass Filter Using Compact Structure at Frequencies of 3300 MHz – 3400 MHz for WiMAX Application Santiko, Arief Budi; Amrullah, Yahya Syukri; Wahyu, Yuyu; Maulana, Muhammad Ilham; Setia, Bambang
Jurnal Elektronika dan Telekomunikasi Vol 16, No 1 (2016)
Publisher : Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/jet.v16.11-14

Abstract

In this paper, the design of microstrip BPF (Bandpass Filter) for WiMAX (Worldwide Interoperability for Microwave Access) application has been presented. The frequency band allocations for BWA (Broadband Wireless Access) in Indonesia are 2.3; 3.3 and 5.8 GHz. This microtrip BPF is designed using parallel coupled line in compact form and it has spesific parameter, i.e. 3.35 GHz center frequency, 400 MHz bandwidth, VSWR ≤ 2, -3 dB insertion loss and matching impedance between two port is 50 Ω. The Advanced Design System (ADS) software has been used during simulation and optimization. The simulation results show that return loss S11 and insertion loss S21 are -15.31 dB and -2.2 dB at 3.35 GHz respectively. For the design verification, the prototype of the proposed design wasfabricated and measured.The results of the fabrication approach of simulation results, which have return loss value S11and insertion loss S21 of the proposed microstrip filter are -18.20 dB and -2.91 dB at 3.35 GHz respectively. The result shows that the proposed design can be implemented forWiMAX communication system applications
Estimasi Signal to Interference Ratio dan Daerah Cakupan Untuk Single Frequency Network Pada Siaran TV Digital (DVB-T) Santiko, Arief Budi; Permana, Deni
INKOM Journal Vol 6, No 1 (2012)
Publisher : Pusat Penelitian Informatika - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (536.378 KB) | DOI: 10.14203/j.inkom.178

Abstract

 Digital TV broadcasting one frequency canal can carry on more than 10 TV station broadcast. In this paper describe how SFN(Single Frequency Network) system work with spread receiver node where determine power level that received node toward a few transmitter. The method that applied power level receiver be compared to incoming interference in receiver called S/I ratio (Signal to Interference Ratio). This estimate method also determine by some standard ETSI DVB-T comparation factor to reach QEF(Quasi Error Free) condition, comparator for transmitter signal good or bad. Determination of the maximum distance between transmitter 8.4 km derived from the specification of DVB-T 8K mode with guard interval 1/32. The results obtained in the test area of 20 Km x 20 Km at QEF 22.8dB covered 39%, QEF factor 19.3dB covered 53% and QEF 16.7 dB covered 82%. SFN design method the range of recipients who reach QEF area increased.Keywords: Digital TV, SFN, QEF, Interference, S/I Ratio Pada siaran TV Digital 1 kanal frekuensi dapat membawa lebih dari 10 siaran stasiun TV. Paper ini membahas bagaimana sistem SFN (Single Frequency Network) bekerja menyebarkan titik penerima menentukan level daya yang diterima satu penerima terhadap beberapa pemancar. Metode yang diterapkan estimasi S/I ratio (Signal to Interference Ratio) yaitu level daya Signal suatu penerima dibandingkan dengan Interference yang masuk pada penerima. Metode estimasi ini ditentukan juga dengan standard DVB-T ETSI yaitu faktor pembanding untuk mencapai kondisi QEF(Quasi Error Free) pembanding untuk sinyal penerima baik atau buruk. Penentuan jarak maksimum antar pemancar 8,4Km didapat dari spesifikasi mode 8K DVB-T dengan guard interval 1/32. Hasil yang didapatkan di area uji 20Km x 20Km pada QEF 22,8dB sebesar 39%, pada QEF 19,3dB tercakup 53% dan QEF 16,7 dB sebesar 82% tercakup. Perancangan dengan metode SFN ini hasil jangkauan area penerima yang mencapai QEF akan meningkat.Kata Kunci: TV Digital, SFN, QEF, Interference, S/I ratio 
Simulasi dan Realisasi Microstrip RF Amplifier 9,3 GHz Untuk Radar Pantai RAHAYU, YUSNITA; RITONGA, NICOLAS PEDRO; MAULANA, YUDI YULIYUS; SAPUTERA, YUSSI PERDANA; SANTIKO, ARIEF BUDI; ANHAR, ANHAR
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 12, No 1: Published January 2024
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v12i1.216

Abstract

ABSTRAKIndonesia merupakan negara kepulauan yang membutuhkan kemandirian teknologi radar pantai untuk keperluan pengawasan. Maka, kebutuhan akan RF amplifier yang murah merupakan suatu keharusan. Makalah ini menyajikan simulasi dan realisasi microstrip RF amplifier menggunakan RT/Duroid 5580 dan teknik matching stub pada frekuensi 9,3 GHz. Teknik ini merupakan yang efektif untuk frekuensi tinggi dan mencocokkan impedansi dengan nilai imajiner. Komponen aktif MGF2407A dipilih dengan konfigurasi DC fixed bias. Dari hasil simulasi, RF amplifier yang diusulkan memiliki gain sebesar 10,318 dB, S11 sebesar -26 dB dan S22 sebesar -28 dB dengan kompresi P1dB sebesar 11 dBm. Namun, selama pengukuran, RF amplifier memberikan redaman akibat pengaruh penyolderan, short circuit, dan electro statis discharge. Untuk parameter terukur lainnya memenuhi persyaratan standar. Hal ini menunjukkan realisasi microstrip RF amplifier untuk frekuensi tinggi memiliki tingkat keberhasilan yang rendah.Kata kunci: radar pantai, penguat daya, matching stub, mikrostrip ABSTRACTIndonesia is an archipelagic country that needs to monitor its islands. For the independence of coastal radar technology, the need for low cost RF amplifiers is a must.This paper presents simulation and realization of microstrip RF amplifier used RT/Duroid 5580 and matching stub technique worked at 9.3 GHz. This matching technique is effective for high frequency and to match the impedance with imaginer value. The active component of MGF2407A was chosen with DC fixed bias configuration. From simulation, the proposed RF amplifier has gain of 10.318 dB, S11 of -26 dB and S22 of -28 dB with P1dB compression at 11 dBm. However, during the measurement, the RF amplifier provides attenuation due to soldering, short circuit, and electro statis discharge effects. For other measured parameters met the standard requirements. This demonstrates the low success rate of realizing microstrip RF amplifiers for high frequencies.Keywords: coastal radar, power amplifier, matching stub, microstrip
Filtering Power Divider menggunakan Filter SIW untuk Aplikasi WLAN 5,8 GHz NUSANTARA, HARDI; SANTIKO, ARIEF BUDI; MUNIR, ACHMAD
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 9, No 3: Published July 2021
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v9i3.703

Abstract

ABSTRAKDalam makalah ini dikembangkan sebuah pembagi daya yang terintegrasi dengan proses filtering yang dinamakan Filtering Power Divider (FPD) untuk mendapatkan ukuran perangkat yang compact. FPD yang diusulkan terdiri dari 2 buah Band Pass Filter (BPF) yang dirancang berdasarkan teknik Substrate Integrated Waveguide (SIW) untuk beroperasi pada frekuensi Wireless Local Area Network (WLAN) 5,8 GHz. Optimasi dilakukan dengan menggunakan sebuah perangkat lunak simulasi untuk menyelidiki pengaruh parameter filter yang berbeda terhadap proses pemfilteran serta tanggapan keluaran FPD. Substrat dielektrik Duroid 5880 dengan ketebalan 1,575 mm digunakan untuk merealisasi FPD dengan total dimensi 95 mm x 70 mm. FPD yang direalisasi memiliki tanggapan bandwidth sebesar 75 MHz pada rentang frekuensi 5,9 GHz hingga 5,975 GHz dan isolasi antar port keluaran sebesar 20 dB.Kata kunci: Band Pass Filter (BPF), filtering power divider, Substrate Integrated,Waveguide (SIW), Wireless Local Area Network (WLAN).ABSTRACTIn this paper power divider integrated with filtering process, named as Filtering Power Divider (FPD), is developed to achieve a compact size of the device. The proposed FPD is composed of 2 pieces of Band Pass Filter (BPF) designed based on Substrate Integrated Waveguide (SIW) to operate at the Wireless Local Area Network (WLAN) frequency of 5.8 GHz. The optimizations are carried out using a simulation software to investigate the effect of different filter parameters to the filtering process as well as to the output response of FPD. A Duroid 5880 dielectric substrate with the thickness of 1.575 mm is used to realized the FPD with the total dimensions of 95 mm x 70 mm. The realized FPD has a bandwidth response of 75 MHz in the frequency range of 5.9 GHz to 5.975 GHz and isolation between output ports is 20 dB.Keywords: Band Pass Filter (BPF); filtering power divider; Substrate Integrated Waveguide (SIW); Wireless Local Area Network (WLAN).
Immobilization of Cerium(IV) Oxide onto Reduced Graphene Oxide in Epoxy Resin Matrix as Radar Absorbing Composite for X-band Region Bolilanga, Patricya Inggrid Wilhelmina; Basuki, Rahmat; Apriliyanto, Yusuf Bramastya; Prasojo, Agus Eko; Lazuardy, Ardyan; Anitasari, Reza; Putri, Riyanti; Sasongko, Nugroho Adi; Santiko, Arief Budi
Indonesian Journal of Chemistry Vol 24, No 6 (2024)
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijc.94404

Abstract

The rGO/CeO2/epoxy composite has been successfully prepared as radar absorbing material (RAM) for the X-band (8–12 GHz) region. The reduced graphene oxide (rGO) originated from pencil graphite oxide (GiO) was synthesized through the modified Hummer method. The synthesis of rGO/CeO2/epoxy was conducted by immobilization of cerium(IV) oxide into rGO (rGO/CeO2) via hydrothermal method and followed by composited the rGO/CeO2 with epoxy resin matrix. Morphological analysis by SEM-EDX indicates that the rGO/CeO2 structure appears to be a tangled layer of edges randomly aggregated, and CeO2 is uniformly anchored on the rGO surface. From the diffractogram result of the XRD instrument, rGO exhibits changes in crystallinity, indicating a transformation of the interlayer structure from multilayer GiO to a single layer of rGO. The presence of Ce–O was indicated at wavenumber 553 cm−1 of rGO/CeO2 by FTIR. The microwave absorbing performance of rGO/CeO2/epoxy conducted by vector network analyzer (VNA) showed that the RL value of the composite was −3.22 dB (47% of electromagnetic wave absorption) at a frequency of 9.25 GHz at the thickness of 1 mm composite. The composite has the promising prospect of being developed as a captivating candidate for the new type of microwave absorptive materials.