ISM Uygulamaları için Dielektrik Rezonans Anten Kullanan Yüksek Verimli Tek Bantlı Bir Doğrultucu Tasarımı.

Öz

Bu makalede, 2,45 GHz ISM bandında radyo frekansı enerji hasadı için verimli bir tek bantlı alıcı anten sunulmaktadır. Bu amaçla yığılmış silindirik dielektrik rezonatör anten (SCDRA) kullanılmıştır. RF harvester'ın ayrıca eşleşen bir ağı ve bir doğrultucusu da bulunmaktadır. Antenin bant genişliğini genişletmek ve 2,45 GHz frekansındaki kazancı iyileştirmek için iki farklı dielektrik malzeme kullanılmaktadır. SCDRA, açıklık bağlantılı besleme tekniği kullanılarak beslenmiştir. Bilindiği üzere anten, elektromanyetik dalgaları elektrik sinyallerine dönüştürür, Ancak bu sinyaller düşük RF gücüne sahiptir. Bu sınırlamanın üstesinden gelmek için çok kademeli bir gerilim iki katlayıcı doğrultucu kullanılmıştır. Bu, verimliliğin artırılmasını sağlar ve tatmin edici bir çıkış gerilimi elde edilmesine olanak tanır. Ayrıca, maksimum güç transferini sağlamak için anten ve doğrultucu devre arasına basit bir empedans eşleştirme ağı yerleştirilmiştir. Doğrultucu ve eşleşme ağı devresinin tasarımı için Advanced Design System (ADS) simülatörü kullanılmıştır. Önerilen rektifiye edici antenin performansını araştırmak için simülasyon sonuçları sunulmakta ve tartışılmaktadır. Rektennamız, 10 dBm giriş gücünde 3 V çıkış gerilimi ile %70’e kadar RF’den DC’ye dönüşüm verimliliği sağlamaktadır.

Anahtar Kelimeler

• Çok aşamalı gerilim katlayıcı
• Doğrultucu
• RF enerji hasadı
• Yığılmış DRA anteni

A High-efficient Single-Band Rectenna Design Using Dielectric Resonant Antenna for ISM Applications

Öz

This paper presents an efficient single-band rectenna for radio frequency energy harvesting at the 2.45 GHz ISM band. For this purpose, a stacked cylindrical dielectric resonator antenna (SCDRA) has been used. The RF harvester has also a matching network and a rectifier. Two different dielectric materials are used to broaden the bandwidth of the antenna and improve the gain at the frequency of 2.45 GHz. The SCDRA has been fed using aperture coupled feed technique. As well known, the antenna converts the electromagnetic waves into electrical signals, however these signals have a low RF power. To overcome this limit, a multi-stage voltage doubler rectifier is used. It allows increasing the efficiency and yields a satisfactory output voltage. Besides, a simple impedance matching network, is placed between the antenna and the rectifier circuit to ensure a maximum power transfer. We used the advanced design system (ADS) simulator for the design of the rectifier and matching network circuit. To investigate the performance of the proposed rectenna, simulation results are presented and discussed. Our rectenna achieves RF to DC conversion efficiency up to 70% with an output voltage of 3 V at an input power of 10 dBm.

Anahtar Kelimeler

• Multi-stages voltage doubler
• Rectenna
• RF energy harvesting
• Stacked DRA antenna

Kaynakça

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