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All Journal Transmisi: Jurnal Ilmiah Teknik Elektro ELKHA : Jurnal Teknik Elektro Jurnal INKOM Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Journal of Engineering and Technological Sciences ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Jurnal Telematika IJAIT (International Journal of Applied Information Technology) Internet of Things and Artificial Intelligence Journal eProceedings of Applied Science
Yuyu Wahyu
Lembaga Ilmu Pengetahuan Indonesia
Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering

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Realization of a Second Harmonic Antenna for Rural Communications* Kurniawan, Adit; Hasyim, Ahmad; Wahyu, Yuyu
Journal of Engineering and Technological Sciences Vol 38, No 2 (2006)
Publisher : ITB Journal Publisher, LPPM ITB

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (471.507 KB) | DOI: 10.5614/itbj.eng.sci.2006.38.2.2

Abstract

In this research, an active antenna operated at the second harmonic frequency is investigated, and is implemented using microstrip antenna material. The antenna consists of a FET oscillator which plays as a fundamental frequency oscillator and a frequency multiplier, and a patch antenna resonated at the second harmonic frequency as the radiator. A maximum second-harmonic output power can be extracted when the load impedance of the oscillator is optimized both at the fundamental and at the second harmonic frequencies. A rectangular patch antenna is used to radiate the second harmonic output power from the oscillator. The patch impedance is matched resistively at the second harmonic frequency. The patch antenna is fabricated using Diclad 522 microstrip substrates (relative permitivity r = 2.5) with a dielectric thickness of 1.57 mm. A GaAs FET AT-8250 transistor is used as an oscillator and a frequency multiplier and acts as the active component. Fundamental frequency is designed at 2,4 GHz band, so that the second harmonic frequency operates at 4,8 GHz band. The frequency is chosen to facilitate and to extend the needs of communications in rural areas using the unlicensed Industrial Scientific, and Medical (ISM) band. Operating the communication infrastructures intended for the use at 2.4 GHz band at its second harmonic frequency, is intended to alleviate interference levels at 2.4 GHz.
Peningkatan Gain dengan Teknik Multilayer Parasitic pada Perancangan Antena Mikrostrip Persegi Panjang 2,4 GHz Utami, Eva Yovita Dwi; Prabelia, Chorintan; Setiaji, Fransiscus Dalu; Wahyu, Yuyu
ELKHA : Jurnal Teknik Elektro Vol.11 No.2, October 2019
Publisher : Faculty of Engineering, Universitas Tanjungpura

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3010.55 KB) | DOI: 10.26418/elkha.v11i2.34352

Abstract

Microstrip patch antennas offer low profile and low cost fabrication advantages but limited gain and bandwidth. Some methods and techniques have been proposed and developed to improve gain of microstrip antenna, and one of them is multilayer parasitic technique. In this paper, the design and realization of rectangular patch microstrip antenna with multilayer parasitic for enhancing antenna gain that operates at frequency of 2.4 GHz is presented. The designed antenna consists of one rectangular patch as the main antenna on the first layer and the 2x2 configuration of rectangular patches on the second and third layers as the parasitic substrate. The simulation results show that the single element antenna has a gain of 3.224 dB and increases to 8.593 dB by using the parasitic multilayer antenna. The antenna design was then fabricated using an Epoxy FR4 substrate with a dielectric constant of 4.65 and a thickness of 1.6 mm. The fabricated multilayer parasitic microstrip antenna has dimension of 80 mm x 90 mm x 34.8 mm. The measurement results show that the VSWR value is 1,284 and the return loss is -18,091 dB at the center frequency of 2,442 GHz. The gain of the multilayer parasitic microstrip antenna measurement is 9.1 dB. The operation frequency range is 2.32 - 2.565 GHz at VSWR  < 2, the bandwidth of 245 MHz is achieved and unidirectional radiation patterns are obtained.
Modul Antena dengan Susunan Uniform untuk Sistem Antena Radar Generasi Kedua Oktafiani, Folin; Saputera, Yussi Perdana; Maulana, Yudi Yuliyus; Wahyu, Yuyu
INKOM Journal Vol 10, No 1 (2016)
Publisher : Pusat Penelitian Informatika - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (742.637 KB) | DOI: 10.14203/j.inkom.427

Abstract

Pada penelitian ini dilakukan perancangan dan fabrikasi modul antena dengan susunan uniform untuk sistem antena radar generasi kedua. Modul antena yang dirancang terdiri dari empat buah sub-modul yang disusun secara vertikal. Sub-modul terdiri dari susunan delapan patch berbentuk persegi yang diatur sejajar ke arah horizontal dengan metode pencatuan coaxial feed pada titik tengah sub-modul. Setiap patch antena diberi daya yang sama sehingga susunan berbentuk uniform (seragam). Antena dicetak pada bahan duroid dengan nilai εr 2,2 dengan ketebalan 1,57 mm. Hasil pengukuran antena menunjukkan bahwa antena dapat bekerja pada frekuensi 9,4 Ghz dengan nilai VSWR (Voltage Standing Wave Ratio) ≤1,5. Gain antena yang didesain sebesar 20.08 dBi dengan beamwidth horizontal 10˚ dan beamwidth vertikal 20˚.
Studi Pemrosesan dan Visualisasi Data Ground Penetrating Radar M, Yudi Yulius; Wahyu, Yuyu; Oktafiani, Folin
INKOM Journal Vol 2, No 1 (2008)
Publisher : Pusat Penelitian Informatika - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (296.198 KB)

Abstract

Ground Penetrating Radar (GPR) telah digunakan dalam beberapa tahun ini sebagai metode non-destruktif untuk menemukan anomali di bawah permukaan. Dalam tulisan ini, pertama-tama akan dibahas mengenai metode yang digunakan dalam survei GPR. Berikutnya, tentang aplikasi GPR untuk menaksir kondisi hidrogeologi dangkal. Prosedurnya untuk memperoleh, memproses, memvisualisasi, dan menginterpretasikan data GPR. Dari studi kasus yang telah dilakukan menunjukan bahwa data GPR dapat digunakan dalam penentuan geologi bawah permukaan dangkal  dan menemukan muka air tanah.Kata kunci: Groudn penetrating radar, hidrogeologi, permukaan dangkal
Perancangan Fleksibel Antena Dengan Substrat Polyethylene Terephthalate (PET) Untuk Pendeteksian Tumor Pada Payudara Rosdiansyah, Rosdiansyah; Rahayu, Yusnita; Wahyu, Yuyu
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 7 (2020): Edisi 2 Juli s/d Desember 2020
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Cancer is one of the leading causes of death worldwide. Early detection is the best solution for cancer treatment. The UWB microwave imaging technology is one of the most promising technologies in the field of medical diagnosis, because it is non-ionizing and low cost. One of the most important elements in a microwave imaging system is an antenna. Recently, the flexible electronic is used as substrate for microstrip antenna. This paper will proposed the design of flexible antenna for breast tumor detection. The proposed antena is designed using Polyethylene Terephthalate (PET) as substrate and silver as patch. The simulation result shows flexible antenna is work at 5.8 GHz frequency with -25.27 dB value of return loss, 1.115 value of VSWR, 3.37 GHz bandwidth, 58.1% GHz impedance bandwidth and 2.68 dBi Gain. By using a flexible substrate, the antenna can follow the structure of the breast and can be placed in the breast for better breast tumor detection. Keywords: Breast tumor detection, Flexible Antenna, Polyethylene Terephthalate (PET), Ultrawideband (UWB)
Pemodelan Simulasi Antena Stretchable Untuk Aplikasi RADAR Syahputra, Muclas Habib; Rahayu, Yusnita; Wahyu, Yuyu
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Current technological advances and developments require the academic community to continue to innovate to build the country by improving science and technology. One area of concern for researchers is Electronics and Telecommunications. Part of the science that is currently quite indemand is the antenna. In this study discusses Stretchable Antenna Simulation Modeling for RADAR Applications, the antenna is designed using Polydimethysiloxane (PDMS) material so that theantenna can be bent and adjusted to its placement. The antenna is made with an Ultra Wideband (UWB) frequency in the frequency range of 3.1 – 10.6 Ghz with a minimum bandwidth of > 500 MHz and a return loss of < -10 dB with a VSWR of < 2, so that the antenna can detect according to radar capabilities because this frequency has wide bandwidth. When this antenna is simulated the antenna can work at a center frequency of 3.4 GHz with a bandwidth of > 500 MHz, then when the antenna is bent it does not experience a significant change in frequency, judging from the bandwidth obtained is the same but the return loss is getting lower to -43 dB but still at a frequency of 3.4 GHz.Keywords: Antena, Polydimethylsiloxane (PDMS), AgNw, Stretchable, Bending, RADAR, Ultra Wideband (UWB).
Perancangan Dan Simulasi Antena Fleksibel Menggunakan Substrat Polydimethylsiloxane Untuk Aplikasi Pendeteksi Tumor Payudara Hilmi, Muhammad Fadhlurrahman; Rahayu, Yusnita; Wahyu, Yuyu
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 8 (2021): Edisi 2 Juli s/d Desember 2021
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Microwave imaging system is one of the technologies that can be used to detect objects, especially in the field of medical diagnoses, such as detecting tumors in the breast. The technology used is ultrawideband (UWB) with the advantages of low cost, low power consumption, and high transmission capacity. In this study, a flexible antenna was designed at a frequency of 5.8 GHz using a polydimethylsiloxane (PDMS) substrate with a dielectric constant of 2.67 – 3.00 and a loss tangent of 0.02-0.05 for breast tumor detection applications. The antenna design process uses the CST studio suite software. The simulation results of a flexible antenna at an operating frequency of 5.8 GHz with a return loss parameter of -39.19 dB, a VSWR of 1.22, a bandwidth of 3.1 GHz in a frequency range of 4.52–7.62 GHz, the resulting radiation pattern is almost omnidirectional, and a gain of 2.26 dBi. In addition, the gain of flexible antenna with phantom breast without tumor is -23.62 dB and phantom breast with tumor is -24.85 dB at operating frequency of 5.5 GHz, which is shifted by 300 MHz from the desired frequency. Keywords: microwave, ultra-wideband (UWB), flexible antenna, polydimethylsiloxane (PDMS)
Desain dan Implementasi Antena Susunan Mikrostrip Patch Persegi Panjang Empat Elemen pada 2,3 GHz Menggunakan Teknik Pencatuan dengan Distribusi Dolph -Tchebyscheff Angela, Dina; Wahyu, Yuyu; Porayauw, Tony
Jurnal Telematika Vol. 8 No. 1 (2013)
Publisher : Yayasan Petra Harapan Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61769/telematika.v8i1.63

Abstract

Penelitian ini melakukan perancangan dan realisasi sebuah antena, yang terdiri atas susunan empat mikrostrip patch persegi panjang yang dicatu secara seri menggunakan distribusi Dolph-Tchebyscheff. Antena ini dirancang untuk dapat bekerja pada frekuensi 2,3 GHz karena frekuensi tersebut digunakan untuk Worldwide Interoperability for Microwave Access (WiMAX) sehingga antena ini dapat digunakan untuk aplikasi WiMAX. Makalah ini menjelaskan proses desain, realisasi, hingga pengukuran. Desain dimulai dengan perhitungan secara teoritis berdasarkan teori desain antena mikrostrip dan teori distribusi Dolph-Tchebyscheff. Kemudian, hasil perhitungan tersebut dioptimalisasi dengan bantuan suatu perangkat lunak desain antena hingga memperoleh karakteristik antena sesuai dengan spesifikasi yang diinginkan. Keluaran akhir dari penelitian ini adalah sebuah prototipe antena susunan mikrostrip patch persegi panjang empat elemen yang bekerja pada frekuensi 2,3 GHz. Parameter antena, seperti VSWR, polarisasi, pola radiasi, bandwidth, dan gain, juga diukur. Pada akhir proses penelitian ini, hasil pengukuran dibandingkan dengan hasil perhitungan teoritis dan simulasi.
Perancangan Antena MIMO Rectangular Patch Double Layer pada Frekuensi 2,35 GHz Utami, Eva Yovita Dwi; Gupita, Muhamad Asra; Wahyu, Yuyu
Jurnal Telematika Vol. 19 No. 1 (2024)
Publisher : Yayasan Petra Harapan Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61769/telematika.v19i1.649

Abstract

A MIMO microstrip antenna 2x2 with a double layer at a working frequency of 2.35 GHz is designed and realized in this study. The structure of the proposed MIMO antenna consists of two symmetrical rectangular patches made of copper and a substrate made of FR4 Epoxy, which has a relative permittivity of 4.3 and a thickness of 1.6 mm. The proposed 2x2 MIMO antenna is designed with two layers, one main layer and one parasitic layer above the main layer, with a particular air gap. The single-layer and double-layer antenna designs are simulated with software. The simulation results show that the gain of the single-layer antenna is 2.8 dB, while the double-layer antenna reaches 4.55 dB. The bandwidth obtained on the single-layer antenna is 69.8 MHz, and on the double-layer is 102.64 MHz. Thus, there is an increase in gain of 62.5% and an increase in bandwidth reaching 47% on the double-layer antenna. The designed and simulated antenna has been successfully fabricated at a frequency of 2.35 GHz. The measurement results of the fabricated antenna show an increase in gain of 12.5% and an increase in bandwidth of 18.84%.
ANALISIS KINERJA RF POWER AMPLIFIER PADA FREKUENSI 3 GHz UNTUK APLIKASI RADAR CC-OFDM-MIMO Mukti, Prasetiyono Hari; Wikantyoso, A Krisna; Wibowo, Reyhan Adinathan; Kuswidiastuti, Devy; Hendrantoro, Gamantyo; Wahyu, Yuyu; Adhi, Purwoko
Transmisi: Jurnal Ilmiah Teknik Elektro Vol 26, No 1 Januari (2024): TRANSMISI: Jurnal Ilmiah Teknik Elektro
Publisher : Departemen Teknik Elektro, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/transmisi.26.1.10-16

Abstract

Indonesia sebagai negara kepulauan yang sangat luas memerlukan sebuah teknologi pengawasan yang dapat memantau pergerakan objek di wilayah kedaulatan Indonesia, baik itu wilayah darat, laut, maupun udara. Salah satu teknologi yang digunakan adalah sistem radar. Berbagai teknologi radar telah dikembangkan, dari mulai radar konvensional hingga modern. Terkini, telah diusulkan sebuah teknologi baru yang dapat menjadi kandidat untuk meningkatkan kinerja radar AESA, yaitu Radar berbasis CC-OFDM-MIMO. Hanya saja, teknologi ini masih dalam tahap pembuktian konsep, sehingga perlu pengujian lebih lanjut dalam bentuk prototipe. Salah satu komponen yang perlu dikembangkan dalam prototipe radar CC-OFDM-MIMO ini adalah modul Power Amplifier. Sehingga, pada makalah ini, kami membahas pengembangan modul Power Amplifier yang dirancang menggunakan komponen komersial. Selain karena biaya produksi yang murah, pengembangan dari komponen komersial ini juga untuk turut meningkatkan kemampuan dalam negeri dalam merancangan komponen/modul gelombang mikro. Modul Power Amplifier ini dilengkapi dengan Automatic Load Switching yang berfungsi untuk mengatur mekanisme switching pada Power Amplifier berdasarkan mode Radar yang digunakan. Karena proses fabrikasi yang masih memerlukan waktu lama, pada makalah ini modul Power Amplifier yang dikembangkan diverifikasi secara numerik terhadap parameter kinerja return loss, gain, titik kompresi P1dB, dan titik perkalian intermodulasi orde 3 (IP3). Dari hasil pengujian tersebut, diperoleh hasil bahwa modul power amplifier yang dikembangkan memiliki gain sebesar 14.5dB, OP1dB sebesar 28.5 dBm, saturasi pada daya output 30.5 dBm, dan bekerja pada frekuensi 3GHz untuk implementasi sistem penguat pada model radar CC-OFDM-MIMO. 
Co-Authors Adi Wirawan Adi, Puput Dani Prasetyo Adit Kurniawan Agus Sria Warman, Vista Ahmad Hasyim Aloysius Adya Pramudita Amiruddin, Rifki Angela, Dina Ardi, Idil Arief Budi Santiko, Arief Budi Basari Basari Budi Syihabuddin Dadin Mahmudin, Dadin Devy Kuswidiastuti Dharma, Andri Setya DHIYANI, AZIZKA AYU DWI ANDI NURMANTRIS Erwin Susanto Eva Yovita Dwi Utami Folin Oktafiani, Folin Fransiscus Dalu Setiaji Gamantyo Hendrantoro Gupita, Muhamad Asra H, Asep Yudi Hardiati, Sri Harfan Hian Ryanu Heroe Wijanto Hilmi, Muhammad Fadhlurrahman Jamil Setiawan, Lutfi Ken Paramayudha, Ken Kitagawa, Akio M, Yudi Yulius Mahabror, Dendy Mariana L, Angela Muhammad Ilham Maulana Novita, Hessy Oktaviani, Folin Permatasari, Hanindya Plamonia, Nicco Porayauw, Tony Prabelia, Chorintan Prabowo, Bayu Heri Prasetiyono Hari Mukti Prastiyono, Yudi Purwoko Adhi R., Budi Prasetya Radial Anwar, Radial Raharjo, Eko Tjipto Rahmatullah, Rizky Rosdiansyah, Rosdiansyah S, Haryanto Sachrawi Sari, Aprilia Pustpita Setia, Bambang Shiddiq S.H, M. Sukatin, Sukatin Susilo, Suhardi Atmoko Budi Syahputra, Muclas Habib Syakirotunnikmah, Ukhty Taryana, Yana Tri Anggraini, Selva Waryanto, Waryanto Wibowo, Reyhan Adinathan Wikantyoso, A Krisna Yahya Syukri Amrullah Yudi Yuliyus Maulana, Yudi Yuliyus Yusnita Rahayu Yussi Perdana Saputera Zulkarnain, Riza Zulkiflia, Fitri Yuli