Microwave Power Transmission Technologies for Solar Power Satellites

Sasaki, Susumu; Tanaka, Koji; Maki, Ken-ichiro

doi:10.1109/jproc.2013.2246851

Cited by 163 publications

(65 citation statements)

References 15 publications

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“…This value also corresponds to a plane wave Poynting vector magnitude of 1327 Wm −2 . This is comparable to the expected power density for microwave power transmission from space-based solar power [13]. Figure 5 represents a lower value, of E 0 = 100 NC −1 .…”

Section: Discussion Of Resultssupporting

confidence: 63%

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Reducing microwave absorption with fast frequency modulation

Qin

Hübler

2017

Phys. Rev. E

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We study the response of a two-level quantum system to a chirp signal, using both numerical and analytical methods. The numerical method is based on numerical solutions of the Schrödinger solution of the two-level system, while the analytical method is based on an approximate solution of the same equations. We find that when two-level systems are perturbed by a chirp signal, the peak population of the initially unpopulated state exhibits a high sensitivity to frequency modulation rate. We also find that the aforementioned sensitivity depends on the strength of the forcing, and weaker forcings result in a higher sensitivity, where the frequency modulation rate required to produce the same reduction in peak population would be lower. We discuss potential applications of this result in the field of microwave power transmission, as it shows applying fast frequency modulation to transmitted microwaves used for power transmission could decrease unintended absorption of microwaves by organic tissue.

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Section: Discussion Of Resultssupporting

confidence: 63%

“…The numerical solution uses the Matlab implementation of TR-BDF2 in the function ode23tb, chosen for the numerical stability which prevents total probability from increasing for long solutions [10]. The forcing function is of the form shown in Equation (13).…”

Section: A Comparison With Numerical Solutionmentioning

confidence: 99%

Reducing microwave absorption with fast frequency modulation

Qin

Hübler

2017

Phys. Rev. E

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“…We assume the atmosphere attenuation occurs below Kármán line, with the total atmospheric height of 54 nautical miles [34]. The antenna efficiency of the transmitter is assumed to be 80% [35], and the ground receiver rectifier antenna total radius is considered to be 1 km with the efficiency of 95%, which results in G r = 89.66 dBi. Table II shows that with the same antenna size, the LEO spacecraft harvests a higher total energy compared with the GEO spacecraft.…”

Section: Proposed Novel Sbsp Satellite Networkmentioning

confidence: 99%

LEO satellite formation for SSP: energy and doppler analysis

Goh

Zekavat

Abdelkhalik

2015

IEEE Trans. Aerosp. Electron. Syst.

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The space-based solar power (SBSP) concept was introduced during the 1970s. However, the technological challenges during that period stalled its development. Decaying natural energy resources, global warming, and geopolitical pressures have encouraged many countries and researchers to seek new reliable energy sources, such as SBSP. A solar power technology that comprises low Earth orbit (LEO) spacecraft formation has been proposed in the literature. All spacecraft in the LEO formation harvest solar energy and transmit the power to a leader spacecraft or the ground station simultaneously. In the proposed LEO technique, the high and varying relative speed within the spacecraft formation, and also within the spacecraft and the Earth, causes a nonhomogeneous Doppler spread during solar power transmission. This Doppler spread reduces SBSP power transmission efficiency. In this paper, first, the transmission link budget from LEO and geostationary orbits to the Earth are compared, and the harvested energy by the ground station on the Earth is investigated. This motivates low or mid Earth orbit satellite usage for SBSP. Next, considering different spacecraft configurations, the impact of the distance between each spacecraft and the ground station, and the distance between each spacecraft and the leader spacecraft on the variation of the Doppler frequency spread is investigated. In addition, the impact of the position of the leader spacecraft with respect to other spacecraft in the formation is studied. The results confirm that higher altitude or Manuscript smaller formation size leads to lower Doppler frequency spread in the transmission between each spacecraft to the ground station (or leader spacecraft). Finally, several possible techniques to improve the wireless power transmission efficiency due to the Doppler effect are discussed and compared.

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“…At the beginning, the development was limited to wireless communication. However, the recent trends suggest that, this technology is focusing on the power transfer technology more seriously due to the flexibility of operation [3], [4], [5], [6], [7], [8]. For instance, WPTT strategies for electric vehicles and mobile devices are already exists [9] while applications in the field of biomedical engineering are emerging.…”

Section: Introductionmentioning

confidence: 99%

Assessment of wireless power transfer technology for emergency power response

Awal

Jusoh

Kamarudin

et al. 2015

2015 IEEE Student Conference on Research and Development (SCOReD)

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The impact of the natural disaster is devastating. Wireless power transfer technology is very promising to reduce this impact by providing power backup for communication devices. This paper presents the assessment of the wireless power transfer technologies for long distance energy transfer. The review of several wireless power transfer technologies (WPTT), namely inductive, capacitive, acoustic, and optical, are presented. The WPTTs are evaluated in the context of several criteria, specifically, propagation area, power level, and efficiency. From the evaluation, it is evident that, optical WPTT is highly suitable for long distance power transfer. It can cover a large area with considerable power. Moreover, it can be merged with the PV technology on the receiving end, which proves its superiority over other technologies in the context of application compatibility.

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Microwave Power Transmission Technologies for Solar Power Satellites

Cited by 163 publications

References 15 publications

Reducing microwave absorption with fast frequency modulation

Reducing microwave absorption with fast frequency modulation

LEO satellite formation for SSP: energy and doppler analysis

Assessment of wireless power transfer technology for emergency power response

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