Radiative Wireless Power-Transfer System Using Wideband, Wide-Angle Slot Arrays

Ettorre, Mauro; Alomar, Waleed A.; Grbic, Anthony

doi:10.1109/tap.2017.2688930

Cited by 17 publications

(14 citation statements)

References 24 publications

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“…Therefore, arrays of long slots with very small periodicities with respect to the wavelength are the best antenna solution for Van Atta arrays, and are superior to any solution based on resonant elements such as patches or dipoles. Furthermore (14) confirms that the proposed array can collect and retransmit all the power impinging on its aperture, as also proven in [14] and shown later in Section III…”

Section: Slotssupporting

confidence: 79%

“…The connections allow the phase profile of the imping signal to be reversed without resorting to active circuitry. In a recent paper [14], the authors have shown that for far-field WPT Van Atta antennas provide the same focusing capabilities as more sophisticated approaches but with a reduced cost and simpler implementation. In addition, the scanning and bandwidth capabilities of Van Atta solutions are only limited by the antenna employed [9].…”

Section: Introductionmentioning

confidence: 99%

“…These arrays have a narrow bandwidth and limited field of view, as shown in several papers [3], [4], [15]- [18]. In addition, they backscatter more than 50% of the incoming energy [14]. In [14], we proposed an array of long slots to overcome these limitations.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, they backscatter more than 50% of the incoming energy [14]. In [14], we proposed an array of long slots to overcome these limitations. The monostatic RCS of a Van Atta array of long slots is derived here by windowing the aperture field distribution of the corresponding infinite array [21].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

2-D Van Atta Array of Wideband, Wideangle Slots for Radiative Wireless Power Transfer Systems

Ettorre

Alomar

Grbic

2018

IEEE Trans. Antennas Propagat.

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Section: Slotssupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

2-D Van Atta Array of Wideband, Wideangle Slots for Radiative Wireless Power Transfer Systems

Ettorre

Alomar

Grbic

2018

IEEE Trans. Antennas Propagat.

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“…1. The bandwidth, frequency of operation and scanning range specification for the design are chosen based on possibly using the array as a Van Atta mirror in a far-field wireless power transfer system [9], [10]. In particular, the goal was an active reflection coefficient lower than −10 dB over the 5.4 − 6.2 GHz band, for a scanning range in elevation of ±30 • .…”

Section: Antenna Designmentioning

confidence: 99%

An $8\times 4$ Continuous Transverse Stub Array Fed by Coaxial Ports

Zhou

Ettorre

Grbic

2019

Antennas Wirel. Propag. Lett.

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Continuous transverse stub arrays are wide band, wide scanning antennas consisting of an arrangement of long slots or parallel plate waveguide apertures radiating in free space. A line source is generally required to feed these arrays. Here, we show that such a line source can be created over the radiating aperture using a 2D arrangement of coaxial probe transitions. The coaxial transitions are directly integrated into the parallel plate waveguides feeding the slots. Such a solution avoids using quasi-optical systems or bulky corporate networks to feed the array. The proposed 2D feeding scheme also allows steering the main beam of the array. This is an additional benefit with respect to previous designs for which scanning was limited to a single plane. An array of 8×4 elements validates the concept at 5.8 GHz. Measurements show that the array exhibits a field of view of ±30 • in elevation over the 5.4 − 6.2 GHz band, with an active reflection coefficient for the central elements better than −10 dB.

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Van Atta Array Reflector

Miao,

Hao,

Wang

et al. 2024

Encyclopedia of RF and Microwave Engineering

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Retrodirective arrays have attracted a lot of research interest due to their unique characteristic of automatically responding to an interrogator without any prior information on the source location. As a unique member in the family of retrodirective arrays, the Van Atta array reflectors have features of simple structure and low cost and hold great potential for use in military and commercial applications, such as mobile communication, vehicle radar, radio‐frequency identification (RFID), and wireless power transfer (WPT). The Van Atta arrays are composed of an even number of radiation elements connected by transmission lines with equal electrical lengths. This article provides a detailed overview of the most recent research on the Van Atta array reflectors. Firstly, the development of the Van Atta arrays is briefly reviewed, and the basic design ideas are introduced. Then, the detailed operation principle of the Van Atta arrays is described, together with the theoretical analysis and experimental measurement to obtain the scattering field patterns in both monostatic and bistatic cases. After that, the latest research progress including the designs of one‐ and two‐dimensional Van Atta arrays is discussed. Besides the passive reflectors, the active Van Atta arrays can be implemented by introducing amplifiers or modulation circuits. In addition, this article also presents a short review of some typical applications of the Van Atta arrays, including the fields of vehicle‐mounting reflectors associated with the intelligent transportation systems (ITSs), the wireless charging of electronic devices, and ultralong‐range chipless sensing. Some examples of transponders using the Van Atta structures for these applications are introduced. Finally, some challenges and future research directions for Van Atta reflectors are presented.

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Radiative Wireless Power-Transfer System Using Wideband, Wide-Angle Slot Arrays

Cited by 17 publications

References 24 publications

2-D Van Atta Array of Wideband, Wideangle Slots for Radiative Wireless Power Transfer Systems

2-D Van Atta Array of Wideband, Wideangle Slots for Radiative Wireless Power Transfer Systems

An $8\times 4$ Continuous Transverse Stub Array Fed by Coaxial Ports

Van Atta Array Reflector

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