The Experts below are selected from a list of 1461 Experts worldwide ranked by ideXlab platform

Dmytro M Vavriv - One of the best experts on this subject based on the ideXlab platform.

K Schunemann - One of the best experts on this subject based on the ideXlab platform.

Naoki Shinohara - One of the best experts on this subject based on the ideXlab platform.

  • A 5.8-GHz Phased Array System Using Power-Variable Phase-Controlled Magnetrons for Wireless Power Transfer
    IEEE Transactions on Microwave Theory and Techniques, 2020
    Co-Authors: Bo Yang, Tomohiko Mitani, Xiaojie Chen, Jie Chu, Naoki Shinohara
    Abstract:

    We build a phased array system with four power-variable phase-controlled Magnetrons (PCMs) by applying the injection-locking method and phase-locked-loop method. To reduce the cost and ensure the durability of the phased array, a waveguide slot array antenna was designed and used for the output antenna of power-variable PCMs. The slot antenna has an expected angle deflection of 22.5°, a gain of 24.9 dBi, and the half bandwidth of the main lobe was 10°. We demonstrated the properties of microwave beamforming and wireless power transfer based on the magnetron phased array system. In horizontal directions, a beam scanning range of ±3° was obtained by adjusting the output phase of the Magnetrons. Furthermore, the received dc power reaches 142 W at a distance of 5 m when the output microwave power of the magnetron phased array is 1304 W.

  • evaluation of the modulation performance of injection locked continuous wave Magnetrons
    IEEE Transactions on Electron Devices, 2019
    Co-Authors: Bo Yang, Tomohiko Mitani, Naoki Shinohara
    Abstract:

    This paper proves that 2.45- and 5.8-GHz band continuous-wave Magnetrons can be used to perform amplitude, phase, and frequency modulations by applying an injection-locking method. The magnetron behaved like an amplifier, and its output could follow the injection signal. In addition, we have achieved the transmission of amplitude-shift keying data at 200 kb/s as well as phase-shift keying and frequency-shift keying at 10 Mb/s. Moreover, we quantitatively discussed several demodulation performances of the injection-locked Magnetrons. Finally, the transmission of audio and video information was demodulated using the injection-locked Magnetrons.

Sean Armstrong - One of the best experts on this subject based on the ideXlab platform.

  • High Deposition Rate Symmetric Magnet Pack for High Power Pulsed Magnetron Sputtering
    Surface and Coatings Technology, 2016
    Co-Authors: Priya Raman, Matthew Cheng, Ivan Shchelkanov, Jake Mclain, David N. Ruzic, Ian Haehnlein, Brian E. Jurczyk, Robert A. Stubbers, Sean Armstrong
    Abstract:

    Abstract High power pulsed magnetron sputtering is a promising physical vapor deposition technique with two minor challenges that obstruct its broader implementation in industry and its use by researchers. The first challenge is the availability of low cost HPPMS power supplies with output power under 2 kW. Such power supplies are suited for circular planar Magnetrons with target diameters between 50 mm to 150 mm. The second challenge is the overall lower deposition rates of HPPMS when compared with direct current magnetron discharges. The “e” magnet pack designed for a 100 mm sputter magnetron which was developed by the Center for Plasma Material Interactions at the University of Illinois at Urbana Champaign in collaboration with Kurt J. Lesker Company was capable of producing twice higher deposition rates in HPPMS compared to a conventional magnet pack. The cylindrically symmetric “TriPack” magnet pack presented here was developed based on magnetic field design solutions from the “e” magnet pack in order to keep the high deposition rates, but improve deposition uniformity, without the need for substrate rotation. The new cylindrically symmetric magnet pack for 100 mm diameter targets, along with a specially designed cooling well provides stable operation at 2 kW average power, even with low-temperature melting-point target materials. The deposition rates from the TriPack magnet pack is compared with a commercial conventional magnet pack for DC and HPPMS power supplies.

Vladymyr A Markov - One of the best experts on this subject based on the ideXlab platform.