Millimeter-Wave Energy Harvesting Using &lt;formula formulatype="inline"&gt;&lt;tex Notation="TeX"&gt;$4\times4$&lt;/tex&gt;&lt;/formula&gt; Microstrip Patch Antenna Array

Mavaddat, Ali; Armaki, S. H. Mohseni; Erfanian, Ali Reza

doi:10.1109/lawp.2014.2370103

Cited by 105 publications

(12 citation statements)

References 20 publications

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“…To provide in‐depth study of this LED sensor unit, aluminum (Al) foils with different sizes are selected as the absorbing medium for electromagnetic wave, schematic diagram of which is illustrated in Figure a. The similar design has been studied by many electrics/electronics researchers for harvesting electromagnetic energy . However, for this kind of antenna harvester, the voltage output induced by electromagnetic wave is usually too small to support a sophisticated energy collecting circuit, which strongly suppresses its efficiency.…”

Section: Resultsmentioning

confidence: 99%

Directly Visualizing Tactile Perception and Ultrasensitive Tactile Sensors by Utilizing Body‐Enhanced Induction of Ambient Electromagnetic Waves

Ren

Nie

et al. 2018

Adv Funct Materials

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Tactile recognition is a critical technology for many applications. Here, it is found that the ambient electromagnetic signal, which is usually regarded as electromagnetic noise, can be a good triggering source to realize tactile detection. A circuit consisting of two light emitting diodes (LEDs) is designed as sensor unit and human contact can amplify the electrostatic signal induced by electromagnetic wave in this circuit, which enhances the brightness of the LEDs. Hence, visualizing tactile perception can be achieved based on this strategy. Accordingly, a stretchable and semi-transparent sensor matrix is established for mapping detailed contact positions, on which the contact force can be smaller than 0.001 N. The detection and the visualization of sliding trajectory and pressure change are also demonstrated by using this sensory method, indicating its good applicability for different purposes. Electromagnetic wave universally exists in the working places and tactile sensors based on this strategy can be possibly applied to many fields such as factory automation, intelligent robotics, human-machine interaction, etc.

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Section: Resultsmentioning

confidence: 99%

Directly Visualizing Tactile Perception and Ultrasensitive Tactile Sensors by Utilizing Body‐Enhanced Induction of Ambient Electromagnetic Waves

Ren

Nie

et al. 2018

Adv Funct Materials

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“…In addition, proposed a space power beaming system using a gyrotron. Mavaddat et al [9] Fabricated a rectenna using a 4 × 4 patch antenna array and LPF at 35 GHz, and carried out near field WPT (Wireless Power Transmission) measurement. Nariman et al [10] developed a rectenna using a grid antenna at 60 GHz and reported RF-DC conversion efficiency of 32.8% and DC power of 1.22 mW.…”

Section: Introductionmentioning

confidence: 99%

“…Earlier reports of studies examining rectenna RF-DC conversion efficiency for frequency[2][3][4][5][6][7][8][9][10][13][14][15][16][17][18][22][23][24].…”

mentioning

confidence: 99%

Wireless Power Transfer via Subterahertz-Wave

Mizojiri

Shimamura

2018

Applied Sciences

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Research on wireless power transmission by a rectenna using millimeter waves and subterahertz waves is gaining attention. It is expected that energy harvesters at high frequencies will be developed for use with future 5 G. High-power wireless power supply to various applications will be possible because of miniaturization of the rectenna. As described herein, we investigate earlier studies of millimeter-wave wireless power supply, selecting and explaining salient examples of millimeter-wave high power wireless power supply.

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“…(1,2) For converting and harvesting the RF energy, a rectenna array with high gains, linear polarization, and miniature structure was designed, which can be matched to rectifier circuits. (3)(4)(5)(6) A dualband Yagi antenna was designed for the global system for mobile communications (GSM-1800) and for universal mobile telecommunications system (UMTS-2100) bands. The antenna gains for GSM-1800 and UMTS-2100 bands are up to 10.9 and 13.3 dBi, respectively.…”

Section: Introductionmentioning

confidence: 99%

Triple-band Slot Antenna Array for Energy Harvesting for Wireless Sensor Networks

Chen¹,

Cheng²,

Liao³

et al. 2018

Sensors and Materials

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An energy harvesting antenna array for wireless sensor applications is presented in this paper. The microstrip line feeding network excites four slots to achieve wireless local-areanetwork (WLAN) 2.4/5.2/5.8 (2.4-2.484/5.15-5.325/5.725-5.825 GHz) bands. The design is printed on a flame retardant 4 (FR4) substrate with thickness of 1.6 mm, permittivity of 4.4, and loss tangent of 0.0245. The overall size of the antenna array is only 60 × 60 × 1.6 mm 3 and, with dual-ports, consists of two antenna arrays; port 1 is designed for a WLAN 2.4 GHz band and port 2 is designed for a WLAN 5.2/5.8 GHz band. The feeding network (electric length = λ g /4) was used to connect the array network and antenna, and for the purpose of in phase excitation, we used microstrip lines (electric length = λ g /2) to adjust the phase difference of these two antenna elements to 180°. Finally, 8 mm above the antenna array, we placed a metal reflector the same size as the antenna to adjust the radiation patterns to the −y direction and to enhance the radiation directivity and gains.

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Millimeter-Wave Energy Harvesting Using <formula formulatype="inline"><tex Notation="TeX">$4\times4$</tex></formula> Microstrip Patch Antenna Array

Cited by 105 publications

References 20 publications

Directly Visualizing Tactile Perception and Ultrasensitive Tactile Sensors by Utilizing Body‐Enhanced Induction of Ambient Electromagnetic Waves

Directly Visualizing Tactile Perception and Ultrasensitive Tactile Sensors by Utilizing Body‐Enhanced Induction of Ambient Electromagnetic Waves

Wireless Power Transfer via Subterahertz-Wave

Triple-band Slot Antenna Array for Energy Harvesting for Wireless Sensor Networks

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