Array Synthesis for Optimal Microwave Power Transmission in the Presence of Excitation Errors

Zhou, Hua‐wei; Yang, Xue‐Xia; Rahim, Sajjad

doi:10.1109/access.2018.2834947

Cited by 12 publications

(3 citation statements)

References 20 publications

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“…The iterative Fourier transform technique was utilized to mitigate the degradation of sidelobe performance of array antenna caused by quantization of its taper across the array in [14]. In [15], the differential evolution (DE) algorithm was adopted to synthesize array antenna for microwave power transmission with excitation errors taken into consideration. In [16], a conical method was proposed for the representation of position errors by considering both the relevance and the randomness of the adjacent planar array elements.…”

Section: Introductionmentioning

confidence: 99%

BA-Based Low-PSLL Beampattern Synthesis in the Presence of Array Errors

Wang

2022

IEEE Access

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Section: Introductionmentioning

confidence: 99%

BA-Based Low-PSLL Beampattern Synthesis in the Presence of Array Errors

Wang

2022

IEEE Access

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“…Strong array performance is necessary to satisfy the demands of MPT system, and system cost should be minimized. Synthesis techniques have been proposed for accomplishing both of these objectives, including transmitting array antenna obtained by stochastic approaches [11][12][13][14] and subarray partition technique [15][16][17]. Besides, the maximum BCE for a linear array and planar array can be solved by discrete prolate spheroidal sequences (DPSSs) [18] and generalized eigenvalue problems [19].…”

Section: Introductionmentioning

confidence: 99%

Novel Sparse Planar Array Synthesis Model for Microwave Power Transmission Systems With High Efficiency and Low Cost

Li¹,

Chang²

2021

PIER C

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A novel algorithm is developed to realize the optimal synthesis of a sparse nonuniformamplitude nonuniform-distribution planar array (SNANDPA) in microwave power transmission (MPT) systems. The dual compression factor particle swarm optimization (DCFPSO) algorithm and the subarray partition technique are adopted to realize the optimal synthesis of SNANDPA. The DCFPSO algorithm first optimizes beam collection efficiency (BCE ) and side-lobe level outside the receiving region (CSL) of SNANDPA which ensure efficient energy transmission of an MPT system and suppress the influence of electromagnetic wave radiated by antenna array on the environment. The subarray partition technique then simplifies the feed network to minimize the system cost. SNANDPA parameters including transmitting aperture, receiving aperture, BCE, CSL, power pattern, element weight, and element distribution, can be obtained efficiently via the proposed method. Representative numerical cases under the different numbers of subarray and elements conditions are analyzed and compared with those of other two traditional MPT array models. Experimental results show that, when the transmitting aperture is 4.5λ × 4.5λ and the square receiving region u 0 = v 0 = 0.2, BCE and CSL are 94.96% and −17.09 dB, respectively, and only 64 elements and 8 amplifiers are required. We conclude that the proposed model can be used to create an efficient and low-cost MPT system.

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“…Battery-powered SNs usually have limited lifetime and replacing batteries would require extensive human effort especially in hazard circumstances [5], [6]. Radio frequency (RF) signal based microwave power transfer (MPT) with omnidirectional power radiation has emerged as a perpetual and cost-effective solution to power randomly distributed large-scale wireless sensor networks over the distance and in an undisruptive way [7]- [12].…”

Section: Introductionmentioning

confidence: 99%

Seamless Integration of Active Antenna With Improved Power Efficiency

Liu

Wang

et al. 2020

IEEE Access

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Loss reduction to improve the power efficiency in active integrated antenna (AIA) is a key design drive. This paper first analyzes the loss mechanism in a convention AIA structure. A new integration scheme of a GaN power amplifier (PA) transistor with an antenna without using any output matching network (OMN) and harmonic tuning network (HTN) is then proposed to construct a seamlessly integrated AIA. This is achieved by a novel design of a slot antenna with optimized input impedance at its fundamental frequency as well as for harmonic tuning, which essentially absorbs the OMN and HTN functions in the conventional Class-F power amplifier design. By eliminating these passive networks between the transistor and the antenna, the associated insertion and mismatch losses as well as the overall circuit size are reduced. For verification, two prototypes are designed, fabricated and measured, one with the integrated design and the other with a conventional design for comparison. Both AIAs operate between 3.4 and 3.6 GHz. Experimental results show that the power-added efficiency (PAE) of the seamlessly integrated AIA is over 52% within the operating band. Compared with the conventional cascaded design of a PA and an antenna, the PAE is improved by 14.2%. INDEX TERMS Amplifier integrated antenna, active antenna, Class-F power amplifier, loss reduction, seamless integration.

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Array Synthesis for Optimal Microwave Power Transmission in the Presence of Excitation Errors

Cited by 12 publications

References 20 publications

BA-Based Low-PSLL Beampattern Synthesis in the Presence of Array Errors

BA-Based Low-PSLL Beampattern Synthesis in the Presence of Array Errors

Novel Sparse Planar Array Synthesis Model for Microwave Power Transmission Systems With High Efficiency and Low Cost

Seamless Integration of Active Antenna With Improved Power Efficiency

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