Zobrazeno 1 - 10
of 1 425
pro vyhledávání: '"Directive antennas"'
Publikováno v:
IEEE Access, Vol 12, Pp 157657-157668 (2024)
Presented is the analysis and design of a leaky-wave antenna (LWA) that radiates an off-broadside beam with zero beam-squinting (ZBS), operating at a frequency of 5.5 GHz. A general design methodology is presented, which can be used to design any fix
Externí odkaz:
https://doaj.org/article/2fdce9ab2fd240ca8e6390704ef991c6
Publikováno v:
Electronics Letters, Vol 60, Iss 4, Pp n/a-n/a (2024)
Abstract Handshake mechanism plays a significant role in neighbour discovery (ND) algorithms in mobile ad hoc networks (MANETs) with directional antennas. In this letter, aiming at 1) the MANET scenario of uniformly‐distributed nodes and 2) the ran
Externí odkaz:
https://doaj.org/article/e3612f5557b24911b995104af1200a5e
Autor:
Antonio J. Rubio, Abdul-Sattar Kaddour, Hunter Pruett, Spencer Magleby, Larry L. Howell, Stavros V. Georgakopoulos
Publikováno v:
IEEE Access, Vol 11, Pp 119313-119329 (2023)
Traditional high-gain antennas, like parabolic reflectors and phased arrays, are challenging to implement on small satellites (SmallSats) due to their reduced volume when stowed for launch. Therefore, a deployable volume-efficient Miura-ori (VEMO) re
Externí odkaz:
https://doaj.org/article/6cf1ba2b508b4720ba0a025603578170
Autor:
Walter Fuscaldo, Elahehsadat Torabi, Dimitrios C. Zografopoulos, Danilo Erricolo, Romeo Beccherelli
Publikováno v:
IEEE Access, Vol 11, Pp 91831-91841 (2023)
A rectangular metallic leaky waveguide loaded with liquid crystals (LC) and operating in its fundamental TE mode at 1 THz is proposed to mitigate the well-known trade-off between directivity and tunable angular range of dynamic beamscanning antennas.
Externí odkaz:
https://doaj.org/article/74edf2292cef446ba0584f2940dcbe2e
Autor:
Constant M. A. Niamien
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 3, Pp 1364-1381 (2022)
This paper investigates the best antenna characteristics to harvest ambient RF waves maximally. The proposed approach analyzes and compares key design aspects, including multi-polarization, multi-port, multi-band, omnidirectional, quasi-isotropic, an
Externí odkaz:
https://doaj.org/article/15d07959c23a492d96a6fb4180bc1747
Autor:
Richard W. Ziolkowski
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 3, Pp 154-188 (2022)
Multipole expansions are an essential analysis tool in the foundations of the descriptions of the electromagnetic fields radiated by electric and magnetic sources. Nevertheless, practical antenna systems generally rely on them as an academic explanat
Externí odkaz:
https://doaj.org/article/0b424bb7b8e2496a87729e26e060aeef
Akademický článek
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Publikováno v:
IEEE Access, Vol 9, Pp 90295-90305 (2021)
An anisotropic metasurface that performs a reflectarray and transmitarray on each side is proposed. The proposed configuration comprises $15\times15$ unit cells that consist of polarization converters and a polarization filter. Two topologies are dev
Externí odkaz:
https://doaj.org/article/18640acc2d454df798f2c868c7d553f5
Publikováno v:
IEEE Open Journal of Antennas and Propagation, Vol 1, Pp 598-603 (2020)
The development of reconfigurable antennas compatible with a CubeSat form factor can aid several space missions. Often, satellite missions require multiple wireless links with the same radio, but the design of such antennas is challenging due to the
Externí odkaz:
https://doaj.org/article/0f3a6a9eb436404eb8e81d3399326267
Publikováno v:
IEEE Access, Vol 8, Pp 137934-137946 (2020)
A gain-enhancement scheme that combines an active integrated antenna (AIA) and an optically transparent reflectarray on solar cells is proposed for CubeSat applications. As CubeSat antennas require a compact footprint, improving the gain over limited
Externí odkaz:
https://doaj.org/article/57d8c785d17c4683aeec135e247e7c46