Experimental Demonstration of Coexistence of Microwave Wireless Communication and Power Transfer Technologies for Battery-Free Sensor Network Systems

Yoshida, Shizuo; Noji, Takumasa; Fukuda, Goh; Kobayashi, Yuta; Kawasaki, Shigeo

doi:10.1155/2013/357418

Cited by 8 publications

(7 citation statements)

References 26 publications

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“…The ES transmits continuous microwave to the DT. Note that the use of continuous microwave for MPT is a general assumption as in [3], [4], [7], [8]. We have confirmed that the bandwidth for MPT is less than 2 kHz through measurements.…”

Section: Adjacent Channel Operation Of Continuous Mpt and Wlan Data Tsupporting

confidence: 68%

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Experimental Investigation of Co-channel and Adjacent Channel Operations of Microwave Power and IEEE 802.11g Data Transmissions

Imoto

Yamashita

Ichihara

et al. 2014

IEICE Trans. Commun.

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We discuss the division of radio resources in the time and frequency domains for wireless local area network (WLAN) devices powered with microwave energy. In general, there are two ways to avoid microwave power transmission (MPT) from influencing data communications: adjacent channel operation of continuous MPT and WLAN data transmission and co-channel operation of intermittent MPT and WLAN data transmission. Experimental results reveal that, even when we implement these methods, several problems arise because WLAN devices have been developed without supposing the existence of MPT. One problem clarified in our experiment is that adjacent channel operation at 2.4 GHz does not necessarily perform well owing to the interference from MPT. This interference occurs regardless of the frequency separation at 2.4 GHz. The other problem is that intermittent MPT could result in throughput degradation owing to the data rate control algorithm and the association scheme of the WLAN. In addition, the experimental results imply that a microwave energy source and a WLAN device should share information on the timings of intermittent MPT and data transmission to avoid buffer overflow. key words: microwave power transmission, IEEE 802.11, CSMA/CA, WLAN, adjacent channel interference

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Section: Adjacent Channel Operation Of Continuous Mpt and Wlan Data Tsupporting

confidence: 68%

“…There is much research on MPT for wireless devices. In [6], [7], the authors have succeeded in designing antennas and rectifiers. In [8], [9], the authors have succeeded in powering mobile phones or sensor devices wirelessly using the 2.4-GHz band.…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Co-channel and Adjacent Channel Operations of Microwave Power and IEEE 802.11g Data Transmissions

Imoto

Yamashita

Ichihara

et al. 2014

IEICE Trans. Commun.

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“…The far-field WPT technique is based on electromagnetic radiation; it operates in the microwave frequency band 2.4-5.8 GHz [54]. In this technique, the same frequency band can be utilized for WPT and communication information because the WPT uses the RF signals to obtain DC energy [55].…”

Section: Frequencymentioning

confidence: 99%

Opportunities and Challenges for Near-Field Wireless Power Transfer: A Review

et al. 2017

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Abstract:Traditional power supply cords have become less important because they prevent large-scale utilization and mobility. In addition, the use of batteries as a substitute for power cords is not an optimal solution because batteries have a short lifetime, thereby increasing the cost, weight, and ecological footprint of the hardware implementation. Their recharging or replacement is impractical and incurs operational costs. Recent progress has allowed electromagnetic wave energy to be transferred from power sources (i.e., transmitters) to destinations (i.e., receivers) wirelessly, the so-called wireless power transfer (WPT) technique. New developments in WPT technique motivate new avenues of research in different applications. Recently, WPT has been used in mobile phones, electric vehicles, medical implants, wireless sensor network, unmanned aerial vehicles, and so on. This review highlights up-to-date studies that are specific to near-field WPT, which include the classification, comparison, and potential applications of these techniques in the real world. In addition, limitations and challenges of these techniques are highlighted at the end of the article.

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“…The first type of architecture supports a SWIPT system by employing two different EM waves for information transfer and power transfer, respectively [10]. The most straightforward option is the parallel independent architecture seen in Fig.…”

Section: Different Em Wavesmentioning

confidence: 99%

Wireless information and power transfer: from scientific hypothesis to engineering practice

2015

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Recently, there has been substantial research interest in the subject of simultaneous wireless information and power transfer (SWIPT) due to its cross-disciplinary appeal and its wide-ranging application potential, which motivates this overview. More explicitly, we provide a brief survey of the state of the art and introduce several practical transceiver architectures that may facilitate its implementation. Moreover, the most important link-level as well as system-level design aspects are elaborated on, along with a variety of potential solutions and research ideas. We envision that the dual interpretation of RF signals creates new opportunities as well as challenges requiring substantial research, innovation and engineering efforts.

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Experimental Demonstration of Coexistence of Microwave Wireless Communication and Power Transfer Technologies for Battery-Free Sensor Network Systems

Cited by 8 publications

References 26 publications

Experimental Investigation of Co-channel and Adjacent Channel Operations of Microwave Power and IEEE 802.11g Data Transmissions

Experimental Investigation of Co-channel and Adjacent Channel Operations of Microwave Power and IEEE 802.11g Data Transmissions

Opportunities and Challenges for Near-Field Wireless Power Transfer: A Review

Wireless information and power transfer: from scientific hypothesis to engineering practice

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