RF Harvesting pada Frekuensi 890-960MHz Menggunakan Metode Cockroft-Walton Voltage Multiplier
Abstract
Radio Frequency Energy Harvesting (RFEH) merupakan suatu sistem untuk memanen energi RF. Perangkat RFEH terdiri atas antena, rangkaian matching impedance dan voltage multiplier. Tujuan penelitian ini untuk melihat pengaruh beban, matching impedance, dan jumlah stages terhadap tegangan keluaran serta efisiensi yang dapat mencapai karakteristik sensor suhu TMP35 (2.7V, 50μA). Pada penelitian ini menggunakan metode Cockroft-Walton voltage multiplier (CWVM) dan matching circuit transformator ¼ λ untuk memanen energi pada frekuensi 945MHz. Pada penelitian ini dibuat 4-stages CWVM, 9-stages CWVM dan 9-stages CWVM dilengkapi transformator ¼ λ. Pengujian dilakukan dengan dua kondisi yaitu tanpa beban dan dengan beban, dimana pada masing-masing kondisi dilakukan tiga skenario pengujian yaitu perangkat RFEH terhubung langsung dengan SSG, terhubung wireless dengan SSG dan pengujian tanpa SSG. Dari hasil pengujian yang dilakukan pada daya input 0 dBm didapatkan tegangan keluaran 1543mV dan efisiensi 5%. Pada daya input 5 dBm menghasilkan 3740mV dan efiesnsi 9,3% (I 78,8μA) yang dapat mencapai karakteristik sensor suhu TMP35.Kata kunci: Cockroft-Walton voltage multiplier (CWVM), TMP35References
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