Zobrazeno 1 - 10
of 389
pro vyhledávání: '"Per-Simon Kildal"'
Publikováno v:
IEEE Access, Vol 4, Pp 10067-10075 (2016)
In the 5G system, we foresee the use of LOS-dominated mm-wave radio links to moving users being subject to slow fading resulting from the users' random locations and orientations. We refer to this as a random-LOS channel. MIMO processing algorithms w
Externí odkaz:
https://doaj.org/article/e9ebd5de713c417c9ed82839a55ea416
Publikováno v:
IEEE Access, Vol 3, Pp 131-145 (2015)
The characterization of the performance of wireless devices is key to developing new RF products conforming to the latest communications protocols. Traditionally, communication performance tests have focused on the RF performance of the tested device
Externí odkaz:
https://doaj.org/article/b727fe73cdbf45d1aabc0b315510e9be
Publikováno v:
IEEE Access, Vol 2, Pp 1062-1075 (2014)
Wireless systems have become more and more advanced in terms of handling the statistical properties of wireless channels. For example, the 4G long term evolution (LTE) system takes advantage of multiport antennas [multiple-input multiple-output (MIMO
Externí odkaz:
https://doaj.org/article/25e6ce7bca994b6d87a4ace9904a797c
Autor:
Per-Simon Kildal, Sadegh Mansouri Moghaddam, Xiaoming Chen, Mattias Gustafsson, Zhengzhao Shen
Publikováno v:
IEEE Access, Vol 3, Pp 3151-3152 (2015)
Unfortunately, we had mixed up some results when we plotted the graphs in Figure 7 of the above paper. This affected only the two blue curves in each of the three graphs, for $2\times 2$ MIMO in Random-LOS with LP and CP incidences, and had no influe
Externí odkaz:
https://doaj.org/article/a54c953d753649ee965327c95cb204e8
Publikováno v:
University of Twente Research Information (Pure Portal)
A self-grounded bowtie antenna arrangement including an antenna structure including a number of antenna petals including arm sections tapering towards a respective end tip portion and being made of an electrically, conducting material, the end tip po
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::7b585e7d9719cb1c7a6e1e58f2563112
https://research.utwente.nl/en/publications/f160952c-bfe9-479e-af71-ae34e329e96a
https://research.utwente.nl/en/publications/f160952c-bfe9-479e-af71-ae34e329e96a
Publikováno v:
IEEE Antennas and Propagation Magazine. 59:106-116
This article gathers useful, simple algorithms and their physical interpretations for field solutions from incremental sources in three-dimensional (3-D) spatial, two-dimensional (2-D) spectral, and one-dimensional (1-D) spectral domains. The interpr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7e29bbe64cf1ff1b59ef7baba84e045
https://doi.org/10.1109/map.2017.2706665
https://doi.org/10.1109/map.2017.2706665
Publikováno v:
IEEE Antennas and Propagation Magazine. 59:16-25
We derive a general fundamental directivity limitation formula that applies to nonsuperreactive antennas of any size that fit within a minimum sphere of any given radius rmin. The derivation is done by using a new concept: the degrees of freedom (DoF
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0d40f0370bf8b196c2e1f9e30feba39
https://doi.org/10.1109/map.2017.2706659
https://doi.org/10.1109/map.2017.2706659
Publikováno v:
IEEE Transactions on Antennas and Propagation. 64:2905-2913
A wideband high-gain high-efficiency $16 \times 16$ -element slot antenna array is presented for 60-GHz band applications. The antenna is designed based on gap waveguide technology. The most important advantage of using this technology is its ability
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::209497323a33cbb0b60730391a462b52
https://doi.org/10.1109/tap.2016.2565682
https://doi.org/10.1109/tap.2016.2565682
Autor:
Abbas Vosoogh, Per-Simon Kildal
Publikováno v:
IEEE Transactions on Antennas and Propagation. 64:2263-2269
This paper numerically validates a simple formula to calculate the aperture efficiency reduction due to grating lobes in planar phased arrays. Array antennas with element spacing greater than one wavelength will produce grating lobes. Grating lobes a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf9d935f3f3ef5d452100b70ed554f52
https://doi.org/10.1109/tap.2016.2551259
https://doi.org/10.1109/tap.2016.2551259
Autor:
Mariano Baquero-Escudero, Jian Yang, Astrid Algaba Brazalez, Jonas Flygare, Vessen Vassilev, Per-Simon Kildal
Publikováno v:
RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
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This paper describes the design and realization of a transition from a microstrip line to a ridge gap waveguide operating between 95 and 115 GHz. The study includes simulations, measurements, and a Monte Carlo analysis of the assembly tolerances. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d3ce8a0e43432da91ef9947b52af1ec0
https://doi.org/10.1109/tmtt.2016.2535334
https://doi.org/10.1109/tmtt.2016.2535334