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All Journal Transmisi: Jurnal Ilmiah Teknik Elektro JeLAST : Jurnal Teknik Kelautan , PWK , Sipil, dan Tambang ELKHA : Jurnal Teknik Elektro Jurnal Teknik Sipil Jurnal INKOM REKA ELKOMIKA Jurnal Teknik Elektro Jurnal Informatika dan Teknik Elektro Terapan ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Arabiyatuna : Jurnal Bahasa Arab Jurnal Borneo Saintek Jurnal Pengabdian kepada Masyarakat Nusantara REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Journal of Coaching and Sports Science Emitor: Jurnal Teknik Elektro
RUSTAMAJI RUSTAMAJI
Jurusan Teknik Elektro Institut Teknologi Nasional Bandung
Religion Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Nursing Social Sciences

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Journal : REKA ELKOMIKA

 1 
Analisis Kinerja Radio Frekuensi (RF) Interface Pada Perangkat Digital Microwave Digital Fixed Radio System (DFRS) RUSTAMAJI, RUSTAMAJI; HADIANSYAH, RIZKI; NUGRAHA, DWI PUTRA
REKA ELKOMIKA Vol 4, No 1 (2016)
Publisher : REKA ELKOMIKA

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Abstract

ABSTRAK Dalam penelitian ini dilakukan analisis kinerja perangkat radio microwave digital yang digunakan untuk menunjang komunikasi data wireless dengan kapasitas yang besar. Untuk itu diperlukan pengujian untuk mengetahui kehandalan dari perangkat radio microwave digital dengan frekuensi kerja 8 GHz, dimana salah satunya adalah pengujian RF Interface. Analisis kinerja RF Interface terhadap perangkat Radio Microwave Digital tipe Huawei RTN optix 980L meliputi 8 macam pengujian yaitu daya pancar, Frekuensi, Specrtum Mask, Occupation Channel Spacing Bnadwidth, Spurious Emission, Sensitivitas penerima, Modulasi adaptif dan Automatic Daya pancar Control (ATPC). Pengujian ini dilakukan dengan cara simulasi di laboratorium divisi iDec PT.TELKOM. Hasil pengujian kemudian dibandingkan dengan standar STEL yang digunakan sebagai standar PT.TELKOM, didapatkan hasil pengujian daya pancar pada setiap modulasi tidak melebihi margin daya pancar sebesar ±2 dB, frekuensi tidak melebihi 50 ppm, spectrum mask dinyatakan spektrum tidak melebihi mask yang digunakan, occupation channel spacing bandwidth tidak kurang dari 24 MHz, spurious emission tidak melebihi ≤ 65 dBm untuk spurious power emission dan tidak melebihi ≤ 85 dBm, receive signal level sensitivitas penerima tidak melebihi -67 dBm, fitur modulasi adaptif bekerja sesuai dengan variable attenuator yang diatur, dan fitur automatic transmit power control bekerja sesuai dengan variable attenuator yang diatur. Dari hasil tersebut perangakat dinyatakan layak pada pengujian RF Interface karena sudah sesuai dengan standar yang dipakai yaitu STEL. Kata kunci : Radio Microwave Digital , RF Interface, komunikasi data wireless ABSTRACT In this research, an analysis of the performance of digital microwave radio equipment is used to support wireless data communication with a large capacity. It is necessary for the test to determine the reliability of digital microwave radio device with working frequency of 8 GHz, one of which is testing of the RF interface. The analysis of the performance of the RF Interface for Digital Microwave Radio device types Huawei Optix RTN 980L included 8 kinds of testing that was an emittance, Frequency, Spectrum Mask, Occupation Channel Spacing Bandwidth, Spurious Emission, receiver sensitivity, adaptive modulation and automatic transmit power control (ATPC). The test was performed by means of simulation in the laboratory division PT.TELKOM IDEC. The test results were then compared to the standard that was used as a standard STEL PT.TELKOM. The test results were obtained on each modulation transmit power, that it did not exceed the transmit power margin of ± 2 dB, the frequency did not exceed 50 ppm, the declared spectrum mask did not exceed the spectrum mask was used, the occupation bandwidth channel spacing was not less than 24 MHz, the spurious emission did not exceed 65 dBm for spurious emission power and did not exceed 85 dBm. The receive signal level did not exceed the receiver sensitivity -67 dBm, the adaptive modulation feature worked in accordance with the regulated variable attenuator, and the automatic transmit power control feature worked in accordance with the regulated variable attenuator. By these results, the equipment declared eligibility on the testing of RF interface because it was in accordance with the standards those were used in STEL. Key Words : Digital Microwave Radio, RF Interface, kWireless Data Communication
Simulasi Perancangan Filter Analog dengan Respon Butterworth TAMPUBOLON, LEONARD; RUSTAMAJI, RUSTAMAJI; DARLIS, ARSYAD RAMADHAN
REKA ELKOMIKA Vol 1, No 3 (2013)
Publisher : REKA ELKOMIKA

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Abstract

ABSTRAK Penggunaan rangkaian filter sangat penting  pada bagian pengirim maupun di bagian penerima pada suatu sistem komunikasi. Untuk memproses sinyal pada rangkaian filter, dikenal adanya respon filter. Dalam penggunaan rangkaian filter, ada empat jenis respon filter yang cukup dikenal salah satunya adalah respon filter Butterworth. Untuk memudahkan analisis pada respon Butterworth dan perancangan filter, dilakukan sebuah simulasi. Tujuan dari penelitian ini adalah untuk merancang simulasi untuk menghasilkan respon Butterworth dengan frekuensi cut-off 50 MHz pada rangkaian Low Pass Filter (LPF), High Pass Filter (HPF), Band Pass Filter (BPF), dan Band Stop Filter (BSF) serta menghasilkan nilai komponen induktor (L) dan kapasitor (C) yang dibutuhkan untuk merangkai keempat filter ini. Simulasi yang dilakukan menggunakan Graphical User Interface (GUI) dengan cara menuliskan kode-kode program simulasi dan menentukan parameter input untuk program simulasi sehingga dihasilkan rancangan filter pada program simulasi. Dari simulasi yang telah dilakukan, didapatkan bahwa perancangan pada simulasi untuk mendapatkan respon Butterworth dan perancangan rangkaian filter dengan frekuensi cut-off 50 MHz, memiliki amplitudo respon frekuensi yang mengalami penurunan dengan rentang frekuensi 48-54 MHz. Kata kunci : simulasi, graphical user interface, Butterworth, respon ABSTRACT The appllication of filter circuitry has significant part in the transmitter and receiver sides. For processing signals in filter circuit, recognized a filter response.  In utilization of filter circuitry, there are four types of filter responses which are adequate known and one of them is Butterworth filter response. To facilitate this instance, being made a simulation. The objective of this research is to design the simulating program obtaining Butterworth filter response by cut-off frequency 50 MHz on low pass filter, high pass filter, band pass filter, and band stop filter and also counting the component’s values of inductors and capasitors that has needed to design low pass filter, high pass filter, band pass filter and band stop filter. And from the simulation which has made, obtained the designing on simulation to get  Butterworth responses and designing of filter circuit for  low pass filter, high pass filter, band pass filter, and band stop filter has been amplitude’s decreasing for intervals 48-54 MHz. Key words : simulation, graphical user interface, Butterworth, response
Perancangan Prototipe Penguat dan Transduser untuk Komunikasi Bawah Air RUSTAMAJI, RUSTAMAJI; RAHMIATI, PAULINE; SAPUTRA, NOFIARDIMAN
REKA ELKOMIKA Vol 5, No 2 (2017)
Publisher : REKA ELKOMIKA

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Abstract

ABSTARK Suara (gelombang akustik) dapat merambat dalam jarak yang jauh pada komunikasi di bawah air. Suara yang dihasilkan dari sebuah transduser dengan mengubah sinyal listrik menjadi suara (geombang akustik), kemudian dipancarkan oleh transmitter. Dalam penelitian ini dilakukan perancangan dan realisasi dari sebuah prototipe transmitter, yang tersusun dari penguat dan transduser. Berdasarkan perancangan yang telah dibuat, prototipe transmitter mampu membangkitkan sinyal suara (gelombang akustik) dalam range frekuensi 100 Hz - 60 kHz di dalam air dengan menggunakan transduser berupa underwater loudspeaker. Prototipe transmitter tanpa pelindung anti air, dengan pelindung anti air, dan di dalam air dapat menghasilkan sinyal suara (gelombang akustik) dengan sensitivitas 104 mVp-p dari sumber sinyal audio generator, dan 72 mVp-p dari sumber sinyal berupa rekaman suara. Kata kunci : akustik, penguat, SONAR, transmitter, transduser. ABSTRACTSound (acoustic wave) can propagate long distances in the underwater communication. The sound is produced by a transducer to convert electrical signals into sound (acoustic wave), then emitted by the transmitter. In this research, design and realization of a prototype transmitter, which was composed of the amplifier and transducer. Based on the design that has been created, a prototype transmitter signal able to generate sound (acoustic wave) in the frequency range of 100 Hz - 60 kHz in the water by using a transducer in the form of underwater loudspeaker. The prototype transmitter using without protective waterproof, with protective waterproof, and in the water could result in signal noise (acoustic wave) with the sensitivity of 104 mVp-p of the source audio signal generator, and 72 mVp-p of the signal source in the form of sound recordings. Keywords : accoustic, amplifier, SONAR, transmitter, transducer
Co-Authors Adhari, Aldi Aditia, Candyda Renny ANDRIANUS SAPUTRA Anhar Anhar Arko Jatmiko Wicaksono, Arko Jatmiko ARSYAD RAMADHAN DARLIS Djoko Pekik Irianto DWI ARYANTA Dwi Putra Nugraha Eka Priadi Elan Djaelani, Elan Elvira Elvira Fauziah, Dini FEBRIAN HADIATNA Fuady, Ghaniyman Hakim, Arief Shubhan Kania Sawitri Latif, Mochamad Fazri Abdul LEONARD TAMPUBOLON Lismadiana LITA LIDYAWATI Nana Subarna, Nana Niken Syafitri Nugroho, Agung Nur Hidayat, Wahyu PAULINE RAHMIATI, PAULINE Raihan, Nabila Nur Ramdhani, Teguh Rifki, Muh Riza Nurlaila RIZKI HADIANSYAH, RIZKI Rudi Gunawan SABAT ANWARI Sandakila, Shieren Dikah Aprilia Santosa Budiharjo SAPUTRA, NOFIARDIMAN SARAH PERMATASARI, SARAH Siswanto, Wahyu Dwi Sitepu, Ray Hapri SOLIHIN SUPARMAN, SOLIHIN SYAHRIAL SYAHRIAL Waluyo Waluyo Widodo, Hary Widura, Andre