Zobrazeno 1 - 10
of 114
pro vyhledávání: '"Wayne A. Shiroma"'
Publikováno v:
Materials, Vol 17, Iss 9, p 2003 (2024)
Reconfigurable intelligent surfaces (RISs) have the potential to improve wireless communication links by dynamically redirecting signals to dead spots. Although a reconfigurable surface is best suited for environments in which the reflected signal mu
Externí odkaz:
https://doaj.org/article/2380854e86f14a97b1a471b3c1d7d695
Autor:
Mirza Uzair Baig, Kareem S. Elassy, Anders Høst-Madsen, Aaron T. Ohta, Wayne A. Shiroma, Aria Nosratinia
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2021, Iss 1, Pp 1-21 (2021)
Abstract Recent progress in the understanding of the behavior of the interference channel has led to valuable insights: first, discrete signaling has been discovered to have tangible benefits in the presence of interference, especially when one does
Externí odkaz:
https://doaj.org/article/f1e19359460a485689c8ec2d5e1caeed
Publikováno v:
IEEE Access, Vol 8, Pp 167596-167603 (2020)
Gallium-based liquid metals have attracted attention as a conductive adaptable material that can be shaped to obtain reconfigurability. We demonstrate a two-dimensional array of liquid-metal conductive nodes, in which reconfigurability is achieved by
Externí odkaz:
https://doaj.org/article/d2028924be3b4f53a36d7f3aac129afd
Publikováno v:
IEEE Access, Vol 7, Pp 150150-150156 (2019)
Gallium alloys are liquids at room temperature, and are suitable as conductors in electronic circuits. Furthermore, gallium-based liquid metals immersed in a water-based electrolyte such as sodium hydroxide (NaOH) can be electrically actuated, enabli
Externí odkaz:
https://doaj.org/article/85720181caba481c8861af8fc8157eb2
Publikováno v:
Micromachines, Vol 13, Iss 4, p 572 (2022)
Controllable deformation of liquid metal by electrocapillary actuation (ECA) is empirically characterized in fluidic channels at the sub-millimeter-length scale. In 100-µm-deep channels of varying widths, the Galinstan liquid metal could move at vel
Externí odkaz:
https://doaj.org/article/192c3260bed447669179e57617bd575c
Publikováno v:
IEEE Access, Vol 6, Pp 1261-1266 (2018)
A liquid-metal RF shunt switch is presented that combines a dielectric spacer over the RF path with electrolyte-filled capillary troughs to facilitate low-power electrical actuation. The switch demonstrates between 20and 30-dB isolation in the dc to
Externí odkaz:
https://doaj.org/article/105c0cc246f54a478864d915c326497c
Publikováno v:
IEEE Access, Vol 9, Pp 149398-149398 (2021)
In the above article [1], Table 1, Figs. 4 and 5, and Appendices A and B of the associated supplementary materials unfortunately contain minor errors. This article serves to correct those errors.
Externí odkaz:
https://doaj.org/article/b5b47da017bb424c978ee5f9cc584eec
Autor:
George B. Zhang, Ryan C. Gough, Matthew R. Moorefield, Kareem S. Elassy, Aaron T. Ohta, Wayne A. Shiroma
Publikováno v:
International Journal of Antennas and Propagation, Vol 2018 (2018)
A tunable liquid-metal antenna demonstrating gain reconfigurability is presented. This antenna uses a reconfigurable stub made with the liquid metal Galinstan. Using continuous electrowetting, a 60 Hz signal with an amplitude of 1 Vpp and 75% duty cy
Externí odkaz:
https://doaj.org/article/f013e366018745e094bf9efbac725eff
Autor:
Kent J. Sarabia, Sasha S. Yamada, Matthew R. Moorefield, Anthony W. Combs, Aaron T. Ohta, Wayne A. Shiroma
Publikováno v:
International Journal of Antennas and Propagation, Vol 2018 (2018)
A frequency-tunable half-wavelength dipole antenna is realized using an array of electrically actuated liquid-metal pixels. The liquid-metal pixelated dipole antenna demonstrates frequency reconfigurability by switching between resonances at 2.51 GHz
Externí odkaz:
https://doaj.org/article/ab7db9367931424fae44118268227d5e
Autor:
Ryan C. Gough, Andy M. Morishita, Jonathan H. Dang, Wenqi Hu, Wayne A. Shiroma, Aaron T. Ohta
Publikováno v:
IEEE Access, Vol 2, Pp 874-882 (2014)
Continuous electrowetting (CEW) is demonstrated to be an effective actuation mechanism for reconfigurable radio frequency (RF) devices that use non-toxic liquid-metal tuning elements. Previous research has shown CEW is an efficient means of electrica
Externí odkaz:
https://doaj.org/article/a3350b7d12054fcf8ae3f57ca8b5b8a0