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All Journal Jurnal Teknologi Dan Ilmu Pertanian (TIP) Elimensi Journal of Electrical Engineering
Wijaya, Harly
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Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Electrical & Electronics Engineering Engineering Mechanical Engineering

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Pengaruh Konsentrasi Triakontanol Terhadap Pertumbuhan Dan Produksi Tanaman Sawi (Brassica juncea L.) Wijaya, Harly
Jurnal Teknologi dan Ilmu Pertanian Vol. 2 No. 02 (2024): Jurnal Teknologi dan Ilmu Pertanian
Publisher : Cattleya Darmaya Fortuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54209/tip.v2i02.393

Abstract

Penelitian ini bertujuan untuk mengetahui pengaruh Triakontanol terhadap pertumbuhan produksi tanaman sawi. Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) non faktorial. Faktor tersebut adalah faktor konsentrasi giberelin yang terdiri dari enam taraf perlakuan dan empat ulangan/blok. Jumlah polybag yang digunakan sebanyak 24 polybag. Enam taraf Triakontanol terdiri dari: T0 = tanpa pemberian Triakontanol (kontrol), T1 = 2,5 ml/l liter air, T2 = 5,0 ml/l liter air, T3 = 7,5 ml/l liter air, T4 = 10 ml/l liter air, T5 = 12,5 ml/l liter air. Parameter yang diamati pada penelitian ini terdiri dari tinggi tanaman, jumlah daun, bobot basah kanopi, bobot basah akar, bobot kering kanopi dan bobot kering akar. Berdasarkan hasil penelitian dapat disimpulkan bahwa konsentrasi Triakontanol berpengaruh nyata terhadap tinggi tanaman tertinggi, berat basah kanopi terberat, berat basah akar terberat, berat kering kanopi terberat dan berat kering akar terberat. Penggunaan konsentrasi Triakontanol 5 ml/1 liter air menghasilkan tinggi tanaman tertinggi 17,54 cm, berat basah kanopi terberat 14,98 g, berat basah akar terberat 0,94 g, berat kering kanopi terberat 0,64 g dan berat kering akar terberat 0,19 g. Produksi bobot basah kanopi terberat dengan penggunaan triakontanol Topt sebesar 6,08ml/1 liter air menghasilkan Ymaks 13,07 g.
Design of Reconfigurable Metasurface Antenna for 6G in sub-THz band Wijaya, Harly
Journal of Electrical Engineering Vol. 3 No. 03 (2025): Elimensi : Journal of Electrical Engineering
Publisher : Cattleya Darmaya Fortuna

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54209/elimensi.v3i03.394

Abstract

We propose and evaluate a reconfigurable metasurface antenna at D band (f₀≈140 GHz) for short-range 6G applications. The main problem is in sub-THz.—High FSPL, component losses, and beam steering limitations are addressed through a loss-aware co-design that integrates unit-cells (2-bit MEMS and continuous LC), feed/illumination, and radiation-friendly bias networks, along with multi-objective beam codebook optimization (gain maximization, SLL minimization, and scan loss). Full EM simulation results on a transmitarray (TA) architecture show dB at 134–146 GHz (≈8.6%), realized peak gain of 31.8 dBi (aperture efficiency ~38–43%), best SLL of −14.1 dB, beam pointing error ≤1.1°, and beam steering up to ±40° with worst-case scan loss of 3.4 dB; the LC variant provides more precise pointing (≈0.4°). Compared to the reflectarray baseline, TA excels in wide scans due to minimal feed blockage. Link-level estimations show support for 64-QAM (10–30 m) and 256-QAM (10–20 m) under LOS conditions. This approach validates the feasibility of an efficient and realizable sub-THz reconfigurable antenna for 6G extreme
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