dc.contributor |
Háskólinn í Reykjavík |
dc.contributor |
Reykjavik University |
dc.contributor.author |
Bekasiewicz, Adrian |
dc.contributor.author |
Koziel, Slawomir |
dc.date.accessioned |
2021-06-30T14:25:05Z |
dc.date.available |
2021-06-30T14:25:05Z |
dc.date.issued |
2021-05 |
dc.identifier.citation |
A. Bekasiewicz and S. Koziel, “Compact 4 x 4 butler matrix with non-standard phase differences for IoT applications,” Electronics Letters., vol. 57, no. 10, pp. 387–389, doi: 10.1049/ell2.12143. |
dc.identifier.issn |
0013-5194 |
dc.identifier.issn |
1350-911X |
dc.identifier.uri |
https://hdl.handle.net/20.500.11815/2639 |
dc.description |
Publisher's version (útgefin grein) |
dc.description.abstract |
Butler matrices represent a popular class of feeding networks for antenna arrays. Large dimensions and the lack of flexibility in terms of achievable output phase difference make conventional Butler structures of limited use for modern communication devices. In this work, a com-pact planar 4×4 matrix with non-standard relative phase shifts of –30,150, –120, and 60° has been proposed. The structure is designed to operate at the centre frequency of 2.45 GHz. Small dimensions of 31.3×22.9 mm make it useful for Internet of Things applications. The structure operates from 2.35 to 2.55 GHz, which covers the industrial, scientific and medical bandwidth. At the centre frequency, the measured amplitude and phase imbalance are 1.65 dB and±4.3°, respectively. The proposed circuit has been compared to the state-of-the-art structures from the literature. |
dc.description.sponsorship |
This work was supported in part by National Centre for Research and Development Grant NOR/POLNOR/HAPADS/ 0049/2019-00, by National Science Centre of Poland Grant 2017/27/B/ST7/00563, and by Icelandic Centre for Research (RANNIS) Grant 206606051. |
dc.format.extent |
387-389 |
dc.language.iso |
en |
dc.publisher |
Institution of Engineering and Technology (IET) |
dc.relation.ispartofseries |
Electronics Letters;57(10) |
dc.rights |
info:eu-repo/semantics/openAccess |
dc.subject |
Electrical and Electronic Engineering |
dc.subject |
Antennas |
dc.subject |
Internet of Things |
dc.subject |
Circuits |
dc.subject |
Networks |
dc.subject |
Rafvirkjun |
dc.subject |
Rafeindavirkjun |
dc.subject |
Loftnet |
dc.subject |
Hlutanet |
dc.subject |
Hringrás |
dc.subject |
Netkerfi |
dc.title |
Compact 4 × 4 butler matrix with non‐standard phase differences for IoT applications |
dc.type |
info:eu-repo/semantics/article |
dcterms.license |
This is an open access article under the terms of the Creative CommonsAttribution License, which permits use, distribution and reproduction inany medium, provided the original work is properly cited. |
dc.description.version |
Peer reviewed |
dc.identifier.journal |
Electronics Letters |
dc.identifier.doi |
10.1049/ell2.12143 |
dc.relation.url |
http://wileyonlinelibrary.com/iet-el |
dc.contributor.department |
Verkfræðideild (HR) |
dc.contributor.department |
Department of Engineering (RU) |
dc.contributor.school |
Tæknisvið (HR) |
dc.contributor.school |
School of Technology (RU) |