Novel Compact and Broadband Frequency-Selectable Rectennas for a Wide Input-Power and Load Impedance Range

Song, Chaoyun; Huang, Yi; Carter, Paul; Zhou, Jiafeng; Joseph, Sumin David; Li, Gaosheng

doi:10.1109/tap.2018.2826568

Cited by 88 publications

(58 citation statements)

References 36 publications

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“…One exploits already available ambient electromagnetic resources through wireless energy harvesting (WEH), i.e., unintentional WPT, and the other is enabled by intentional WPT [21], [22]. WEH takes advantage of existing frequency bands [23] - [26] and requires broadband or multi-band antennas to capture as much of the available spectrum as is possible [27] - [34]. In general, the magnitudes of transferred wireless power in WEH applications are small amounts.…”

Section: Introductionmentioning

confidence: 99%

Electrically Small, Low-Profile, Highly Efficient, Huygens Dipole Rectennas for Wirelessly Powering Internet-of-Things Devices

Lin

Ziolkowski

Huang

2019

IEEE Trans. Antennas Propagat.

107

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Wireless power transfer (WPT) technologies are a major trend for emerging Internet-of-Things (IoT) applications. Because they negate the need for heavy, bulky batteries and can power multiple elements simultaneously, WPT systems enable very compact, ubiquitous IoT wireless devices. However, the realization of high performance, ultra-compact (electrically small) rectennas, i.e., the rectifying antennas that enable mid-range and far-field WPT, is challenging. We present the first electrically small (ka < 0.77) and low profile (0.04 λ0) linearly (LP) and circularly (CP) polarized WPT rectennas at 915 MHz in the IMS band. They are facilitated by the seamless integration of highly efficient rectifiers, i.e., RF signal to DC power conversion circuits, with electrically small Huygens dipole LP and CP antennas. Their optimized prototypes have cardioid, broadside radiation patterns and effective capture areas larger than their physical size. Experimental results validate that they achieve an 89% peak ACto-DC conversion efficiency, effectively confirming that they are ideal candidates for many of the emerging IoT applications. Index Terms-Electrically small rectennas, Huygens radiation pattern, internet-of-things (IoT), rectifier circuits, wireless power transfer.

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Section: Introductionmentioning

confidence: 99%

Electrically Small, Low-Profile, Highly Efficient, Huygens Dipole Rectennas for Wirelessly Powering Internet-of-Things Devices

Lin

Ziolkowski

Huang

2019

IEEE Trans. Antennas Propagat.

107

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“…In [13], the matching network for the six band rectenna, following topology C, has been designed to match the rectifier at power levels from −30dBm to −10dBm and for load impedances from 1 to 100 kΩ, based on a complimentary conjugate resistance compression network. Moreover, as a result of the predominately capacitive high impedance of the diodes at sub-3 GHz frequencies, broadband rectennas with eliminated matching networks [20], [57], [58], or minimized simplified matching circuits [59], have been focused on P RF > 0dBm, and frequencies higher than [62] as well as co-designed loop antennas [18], [63]. 253 In [64], a passive CMOS power-detector has been used to 254 control the switches directing the antenna's output to differ-255 ent rectifiers and matching networks based on the available 256 power.…”

Section: Hybrid Lumped and Distributed Elements Matching Networkmentioning

confidence: 99%

“…In a folded dipole antenna, the dual shorted lines (dipole-folds), act as an impedance transformer allowing the design of very high impedance antennas [19]. Alternatively, the offset feed, [20], [57], is responsible for increasing the inductive reactance as well as the real impedance. Combining multiple offset dipole elements with imbalanced bow-tie radial stubs resulted in the dual-broadband high impedance of the antenna [20].…”

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confidence: 99%

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Rectennas for Radio-Frequency Energy Harvesting and Wireless Power Transfer: A Review of Antenna Design [Antenna Applications Corner]

Wagih

Weddell

Beeby

2020

IEEE Antennas Propag. Mag.

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Radio frequency energy harvesting (RFEH) and radiative wireless power transfer (WPT) have attracted significant interest as methods of enabling battery-free sustainable wireless networks. Rectifying-antennas (rectennas) are the cornerstone of WPT and RFEH systems and critically affect the amount of DC power delivered to the load. The antenna element of the rectenna directly impacts the radiation to AC harvesting efficiency, which can vary the harvested power by orders of magnitude. In this paper, antenna designs employed in WPT and ambient RFEH applications are reviewed. Reported rectennas are categorized based on two main criteria: the antenna-rectifier impedance bandwidth and the antenna's radiation properties. For each criteria, the Figure of Merit (FoM) is identified, for different applications, and reviewed comparatively.

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“…GaAs commercial Schottky diodes [5]. But very few studies have been reported on the wireless power transmission for high-power applications.…”

Section: Introductionmentioning

confidence: 99%

High-Power Wire Bonded GaN Rectifier for Wireless Power Transmission

et al. 2020

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A novel wire bonded GaN rectifier for high-power wireless power transfer (WPT) applications is proposed. The low breakdown voltage in silicon Schottky diodes limits the high-power operations of microwave rectifier. The proposed microwave rectifier consists of a high breakdown voltage GaN rectifying element for high-power operation and a novel low loss impedance matching technique for high efficiency performance. Wire bonding method is adopted to provide electrical connection between GaN chip and board which induces undesirable inductance. In order to realize high efficiency performance, an impedance matching network is proposed to exploit the unavoidable inductance along with a single shunt capacitor, resulting in a low loss matching circuit to achieve a compact high-power rectifier. The fabricated GaN rectifier exhibits a good performance in the high-power region and can withstand up to 39 dBm input power before reaching the breakdown limit at the operating frequency of 0.915 GHz and load resistance of 100. It has a compact size and exhibits high efficiency performance in high-power region (achieved a maximum efficiency of 61.2% at 39 dBm), making it suitable for high-power applications like future unmanned intelligent devices and WPT in space applications. INDEX TERMS GaN, high-power rectifier, microwave rectifier, rectenna, wire bonding, wireless power transfer (WPT).

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Novel Compact and Broadband Frequency-Selectable Rectennas for a Wide Input-Power and Load Impedance Range

Cited by 88 publications

References 36 publications

Electrically Small, Low-Profile, Highly Efficient, Huygens Dipole Rectennas for Wirelessly Powering Internet-of-Things Devices

Electrically Small, Low-Profile, Highly Efficient, Huygens Dipole Rectennas for Wirelessly Powering Internet-of-Things Devices

Rectennas for Radio-Frequency Energy Harvesting and Wireless Power Transfer: A Review of Antenna Design [Antenna Applications Corner]

High-Power Wire Bonded GaN Rectifier for Wireless Power Transmission

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