Demonstration of Sub-Terahertz Coplanar Rectenna using 265 GHz Gyrotron

Mizojiri, Sei; Takagi, Kengo; Shimamura, Kazuo; Yokota, Shigeru; Fukunari, Masafumi; Tatematsu, Y.; Saito, T.

doi:10.1109/wptc45513.2019.9055555

Cited by 6 publications

(4 citation statements)

References 8 publications

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“…The measured efficiency was 2.17% for 17.1 mW output DC power. A custom GaN Schottky diode is in development to increase the efficiency in sub-THz rectennas [103]. Power beaming in this frequency range could be suitable for future exoatmospheric applications where propagation losses do not play a significant factor.…”

Section: ) Japanmentioning

confidence: 99%

Microwave and Millimeter Wave Power Beaming

et al. 2021

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Section: ) Japanmentioning

confidence: 99%

Microwave and Millimeter Wave Power Beaming

et al. 2021

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“…k and e H k e k = N are utilized to obtain the right hand side. Also, the complex channel gain H k is given in (11).…”

Section: B Ris Reflecting Coefficient Optimizationmentioning

confidence: 99%

“…Furthermore, as the THz band spans from 100 GHz to 10 THz, the wavelength of THz can considerably reduce the necessary antenna aperture [9]. Consequently, utilizing the THz radios for wireless power harvesting becomes an attractive approach [10], [11]. As a result, combining the benefits of the THz transmission in providing high-speed data rates with WPH for IoT devices will be a promising research direction, leading to the new system: Simultaneous Terahertz Information and Power Transfer (STIPT).…”

Section: Introductionmentioning

confidence: 99%

Self-Sustainable Reconfigurable Intelligent Surface Aided Simultaneous Terahertz Information and Power Transfer (STIPT)

Pan

Wang

Pan

et al. 2022

IEEE Trans. Wireless Commun.

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This paper proposes a new simultaneous terahertz (THz) information and power transfer (STIPT) system, which utilizes a reconfigurable intelligent surface (RIS) for both the data and power transmission. We aim to maximize the information users' (IUs') sum data rate while guaranteeing the power harvesting requirements of energy users (EUs) and RIS. To solve the formulated non-convex problem, the block coordinate descent (BCD) based algorithm is adopted to alternately optimize the transmit precoding of IUs, RIS's reflecting coefficients, and the position of RIS. Additionally, the penalty constrained convex approximation (PCCA) algorithm is proposed to optimize the deployment of the RIS, where the introduced penalties ensure that the solution is always feasible. The simulation results show that the proposed solution outperforms the benchmark schemes, and the proposed BCD algorithm can greatly improve the performance of the STIPT system.Index Terms-Simultaneous terahertz information and power transfer (STIPT), intelligent reflecting surface (IRS), reconfigurable intelligent surface (RIS), terahertz (THz) communications.

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“…This makes utilizing the THz electronics for wireless power harvesting a very attractive approach. Also, emerging rectennas have been proposed and manufactured which make the energy harvesting in THz bands becomes possible [10], [11]. As a result, combining the benefits of the THz transmission in providing high-speed data rates with WPH for IoT devices will be a promising research direction, leading to a new term of Simultaneous Terahertz Information and Power Transfer (STIPT) network.…”

Section: Introductionmentioning

confidence: 99%

Self-Sustainable Reconfigurable Intelligent Surface Aided Simultaneous Terahertz Information and Power Transfer (STIPT)

Pan¹,

Wang²,

Pan³

et al. 2021

Preprint

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This paper proposes a new simultaneous terahertz (THz) information and power transfer (STIPT) system, which is assisted by reconfigurable intelligent surface (RIS) for both the information data and power transmission. We aim to maximize the information users' (IUs') sum data rate while guaranteeing the energy users' (EUs') and RIS's power harvesting requirements. To solve the formulated non-convex problem, the block coordinate descent (BCD) based algorithm is adopted to alternately optimize the transmit precoding of IUs, RIS's reflecting coefficients, and RIS's coordinate. The Penalty Constrained Convex Approximation (PCCA) Algorithm is proposed to solve the intractable optimization problem of the RIS's coordinate, where the solution's feasibility is guaranteed by the introduced penalties.Simulation results confirm that the proposed BCD algorithm can significantly enhance the performance of STIPT by employing RIS.

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Demonstration of Sub-Terahertz Coplanar Rectenna using 265 GHz Gyrotron

Cited by 6 publications

References 8 publications

Microwave and Millimeter Wave Power Beaming

Microwave and Millimeter Wave Power Beaming

Self-Sustainable Reconfigurable Intelligent Surface Aided Simultaneous Terahertz Information and Power Transfer (STIPT)

Self-Sustainable Reconfigurable Intelligent Surface Aided Simultaneous Terahertz Information and Power Transfer (STIPT)

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