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All Journal Jurnal Ilmiah Setrum Elektum : Jurnal Teknik Elektro Jurnal Airaha
Teguh Firmansyah
Jurusan Teknik Elektro, Universitas Sultan Ageng Tirtayasa
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Materials Science & Nanotechnology

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Desain Power Amplifier Frekuensi 135 Mhz Untuk Transmiter VHF Dittel Portable Firmansyah, Teguh; Kuswara, Gatot; Prasetyo, Windu
Jurnal Ilmiah Setrum (Journal of Electrical Engineering) Vol 5, No 1 (2016)
Publisher : Fakultas Teknik Elektro - Universitas Sultan Ageng Tirtayasa

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (21.57 KB)

Abstract

Power amplifier (PA) is the final component in the DITTEL Portable VHF transmitter with fucuntion to amplify the signal that is sent from the source. In this paper, the power amplifier is made to work at a frequency of 135 Mhz. PA proposed using Type Mosfet transistors MRF 136 with power supply V = 30 V, VDD = 28 V and ID = 1.2 A in order to obtain the gain and output power are great. To boost the coverage area of communication at the time of check calibration flight. Design PA using L-Network and phi- Matching is used as an input matching circuit and output matching. Type bias transistor used is a power-divider because it has the sensitivity of the lowest changes to temperature changes. The results of the simulations and calculations have been carried out, the result obtained from the specification of power amplifier : stability values> 1, the gain (S21) = 20 dB, output return loss (S11) = -33.89 dB. With a power output as expected at 10 watts or 40 dBm at frequency 135 MHz.
PERANCANGAN DAN SIMULASI ANTENA HELIX PADA FREKUENSI 2,4 GHZ Muchtar, Husnibes; Firmansyah, Teguh
eLEKTUM Vol 15, No 2 (2018): eLEKTUM
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/elektum.15.2.%p

Abstract

Pada Penelitian ini bertujuan untuk  mengatasi permasalahan tentang ketidakstabilan dan penguatan pada Gain dari antena Helix yang dibantu oleh signal booster dengan jarak 30 m serta pada frekuensi 2,4 GHz untuk jaringan wireless LAN, penulis melakukan penelitian dengan metode yang berbeda dari yang sudah ada. Antena Helix akan bergerak 1800 dan mengukur antara level daya, VSWR, Gain, return loss, bandwidth,dan impedansi input. Hasil pengkuran dari antena helix tersebut pada parameter pola radiasi 1800 pada bidang vertical, Gain = 33,1858168 dBi, sedangkan Gain saat tidak menggunakan signal booster = - 11,70799119 dBi , VSWR = 1,8, return loss = – 10,88 dBi, bandwith = 1,5 GHz, impedansi input = 28,43 +  j13,16 Ω. Hasil pengukuran tersebut mendekati dari hasil pada software MMana-Gal. dan penelitian ini sesaui dengan standar pada wireless LAN dan dapat digunakan pada jaringan tersebut.
PEMETAAN DAERAH PENANGKAPAN POTENSIAL IKAN LAYUR (Trichiurus sp) DI PERAIRAN PANGANDARAN, JAWA BARAT Firmansyah, Teguh; Hasan, Zahidah; Afrianto, Eddy; Apriliani, Izza M
Jurnal Airaha Vol 7 No 01: Juni 2018
Publisher : Politeknik Kelautan dan Perikanan Sorong

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Abstract

Fishing activity by catching gill nets by Pangandaran fishermen is using traditional methods inherited by ancestors especially in determining fishing ground such as seeing the color of water surface, small ripple, fish jump, the presence of foam, and see the existence of birds. Such activities make fishing activities less than optimal because the level of uncertainty is high and will impact on high operational costs such as the use of fuel wasted and trip time becomes longer. Knowledge of fishing zones is essential for fishing activities because by knowing potential fishing areas will result optimal catch and reduced effort. Information about potential fishing areas can be obtained through analysis of the distribution of a-chlorophyll in water. The research was doing from October to November 2017. The research used survey method with 7 experimental fishing activities in Pangandaran Waters. From the results of this activity can known that category distribution of fishing ground catchment area in Pangandaran spread from medium to potential category.
Co-Authors Achmad B. Fathoni Agus S. Tamsir Apriliani, Izza M Eddy Afrianto Fajar Nugroho, Tri Hendarto Feti Fatonah Gatot Kuswara, Gatot Gunawan Wibisono Husnibes Muchtar Purnomo S. Priambodo Purnomo, Sabdo Taufiq A. Kurniawan Windu Prasetyo, Windu Zahidah -