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pro vyhledávání: '"Friis transmission equation"'
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Autor:
L.A. Bronckers, Dylan F. Williams, Ulf Johannsen, A.J. van den Biggelaar, S. J. Geluk, Benjamin F. Jamroz, A.B. Smolders
Publikováno v:
IEEE Transactions on Antennas and Propagation, 69(10):9395383, 6772-6782. Institute of Electrical and Electronics Engineers
The Friis equation is often used to determine the gain of antennas but assumes that far-field conditions are met. For limited antenna separations on the order of the Fraunhofer distance, its use requires a precise estimate of the amplitude centers of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::63a561bb203cd5f633f37a50d14be7e9
https://doi.org/10.1109/tap.2021.3069583
https://doi.org/10.1109/tap.2021.3069583
Autor:
Lukas Berkelmann, Dirk Manteuffel
Publikováno v:
IEEE Transactions on Antennas and Propagation. 69:5377-5387
In this article, redefined antenna parameters regarding the additional effects occurring with on-body propagation are derived to enable a standardized characterization of on-body antennas. A model for the on-body propagation of arbitrary wearable and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ab71a0bf0c3852efd49f6e30fb022582
https://doi.org/10.1109/tap.2021.3060944
https://doi.org/10.1109/tap.2021.3060944
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 20:893-897
In this letter, we propose fundamental path loss (PL) models which play vital roles in promoting the intraheart communication system design of future deeply implanted leadless pacemakers inside the cardiac chambers. Initially, employing a plane wave
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f1999a505731615d81050ae098b9f902
https://doi.org/10.1109/lawp.2021.3066546
https://doi.org/10.1109/lawp.2021.3066546
Publikováno v:
IEEE Access, Vol 9, Pp 15066-15073 (2021)
As a matter of fact that the network traffic has a great influence on the binary exponential backoff mechanism, duty cycle mechanism, and fixed transmission power mechanism adopted by the Sensor Medium Access Control (S-MAC) protocol. The paper propo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dcca0baf5ec0c7fba8be3c350b6a0c14
https://doi.org/10.1109/access.2021.3053328
https://doi.org/10.1109/access.2021.3053328
Autor:
Keum Cheol Hwang, Hoseok Jung, Hyungjin Jeon, Hansik Oh, Jaekyung Shin, Sooncheol Bae, Young Chan Choi, Jongseok Bae, Hyungmo Koo, Kang-Yoon Lee, Chan Mi Song, Seungmin Woo, Jongyun Na, Youngoo Yang
Publikováno v:
IEEE Access, Vol 9, Pp 72316-72325 (2021)
The microwave power transfer (MPT) system requires a massive Tx array for building a focused radio wave to efficiently transfer power to the Rx. Beamforming IC is one of the core elements for the massive Tx array. This paper presents a 5.8 GHz 4-chan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d15e91945ea801eea658b5940b36de0
https://ieeexplore.ieee.org/document/9430560/
https://ieeexplore.ieee.org/document/9430560/
Publikováno v:
IEEE Access, Vol 9, Pp 58882-58892 (2021)
This research investigates four switched-beam multi-element circular array antenna schemes operating at 2.4-2.5 GHz for two-dimensional (2D) single-anchor indoor positioning applications. The realization of the proposed antenna schemes involved two e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b85e12a2da1fb92beb1c7c19b14043ed
https://ieeexplore.ieee.org/document/9402901/
https://ieeexplore.ieee.org/document/9402901/
Publikováno v:
Wireless Personal Communications. 113:945-960
Future wireless communication, especially the densified 5G network using millimeter-Wave (mmWave) will bring numerous innovations to the current telecommunication industry. In such scenario, the use of Unmanned Aerial Vehicle (UAV) as Base Station (B
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dbcb149fcd4f05d63cecebab83ae5ad6
https://doi.org/10.1007/s11277-020-07261-x
https://doi.org/10.1007/s11277-020-07261-x
Publikováno v:
Journal of Electromagnetic Engineering and Science, Vol 19, Iss 4, Pp 239-244 (2019)
Microwave-based wireless power transfer in the near field (up to about 10 m) is now drawing much interest since the transfer range when using current magnetic induction or magnetic resonance methods is limited in current industry. The Friis efficienc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0af494f08fc2d09d8ca83cee0bbcc46c
https://doi.org/10.26866/jees.2019.19.4.239
https://doi.org/10.26866/jees.2019.19.4.239
Autor:
Yong Heui Cho, Woo-Jin Byun
Publikováno v:
IEEE Transactions on Antennas and Propagation. 67:2423-2429
Generalization of a Friis transmission equation for orbital angular momentum (OAM) radios is rigorously formulated using the Lorentz reciprocity theorem and a near-and-far-field convolution integral (NFCI). Based on the discretization of NFCIs, we co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::49e04abae860eb01b330487f216ab1c2
https://doi.org/10.1109/tap.2019.2891438
https://doi.org/10.1109/tap.2019.2891438