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Ekstra Alıcı Anten Olmadan Mikrodalga Enerji Toplama

Bu makalede, farklı anten türlerinin verici anten olarak kullanıldığı, alıcı anten olarak ise voltaj doğrultucu devrede bulanan kapasitörün ucunun anten olarak kullanıldığı, farklı radyo frekansı hasadı durumlarını ele almaktadır. Girişte farklı antenler kullanılmış ve buna bağlı olarak iki farklı doğrultma devresi ile dönüşüm verimleri çalışılmıştır. Antensiz log periyodik anten kaynağı için uzak alanda %27.31 RF-DC güç dönüşüm verimi değeri elde edilmiştir. Yarım dalga boyu dipol anten kaynağı için yakın alanda %50.53 RF-DC güç dönüşüm verimliliği değeri elde edilmiştir. Sarmal anten kaynağı için 5 cm mesafeye kadar yaklaşık %14,78 RF-DC güç dönüşüm verimliliği gözlenmiştir. Kaynak olarak kullanılan Yagi-Uda anteni için herhangi bir alıcı anten olmadan uzaktan elde edilen RF-DC güç dönüşüm verimi %28,89 olmuştur.

Anahtar Kelimeler:

Radyo frekansı toplama;, Log periyodik anten, Doğrultucu devreler, Dönüşüm verimliliği

Microwave Energy Harvesting With No Extra Receiving Antenna

This paper addresses different cases of radio frequency harvesting using different antenna types as transmitting antenna but using just the lead of the capacitor as the wire antenna at the receiving end with a voltage rectifier circuit. Different antennas were used in the input and with two different rectification circuits the conversion efficiencies were studied accordingly. For a source of log periodic antenna, without any antenna, 27.31% RF-DC power conversion efficiency value was obtained at the far-field. For a source of half wavelength dipole antenna, at the near-field, 50.53% RF-DC power conversion efficiency value was obtained. For a source of helical antenna, up to 5 cm distance about 14.78% RF-DC power conversion efficiency was observed. For the Yagi-Uda antenna used as a source, RF-DC power conversion efficiency that was obtained at the far was 28.89% without any receiving antenna..

Keywords:

Radio frequency harvesting, Log periodic antenna, Rectifier circuits, Conversion efficiency,

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