Autor: Custovic, E. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Accurate Phase Calibration for Digital Beam-Forming in Multi-Transceiver HF Radar System
Autorzy:: Nguyen, H. Q.
Whittington, J. S.
Devlin, J. C.
Vu, H. L.
Vu, N. V.
Custovic, E.
Tematy:: digital beamforming
phased array antenna
phase calibration
radar
transceivers; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/227073.pdf Link otwiera się w nowym oknie
Opis:: The TIGER-3 radar is being developed as an “all digital” radar with 20 integrated digital transceivers, each connected to a separate antenna. Using phased array antenna techniques, radiated power is steered towards a desired direction based on the relative phases within the array elements. This paper proposes an accurate phase measurement method to calibrate the phases of the radio output signals using Field Programmable Gate Array (FPGA) technology. The method sequentially measures the phase offset between the RF signal generated by each transceiver and a reference signal operated at the same frequency. Accordingly, the transceiver adjusts its phase in order to align to the reference phase. This results in accurately aligned phases of the RF output signals and with the further addition of appropriate phase offsets, digital beamforming (DBF) can be performed steering the beam in a desired direction. The proposed method is implemented on a Virtex-5 VFX70T device. Experimental results show that the calibration accuracy is of 0.153 degrees with 14 MHz operating frequency.
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Allergic Rhinitis and its Impact on Asthma (ARIA) : achievements in 10 years and future needs
Autorzy:: Aït-Khaled, N.
Papadopoulos, N. G.
Bush, A.
Morais-Almeida, M.
Howarth, P.
Boner, A. L.
El-Meziane, A.
Canonica, G. W.
Casale, T. B.
Keith, P. K.
Valero, A. L.
Meltzer, E. O.
Cruz, A. A.
Bieber, T.
Costa, D. J.
Mullol, J.
Keil, T.
Kvedariene, V.
Lodrup Carlsen, K. C.
Custovic, A.
Palkonen, S.
Khayat, G.
Bedbrook, A.
Namazova-Baranova, L.
Wang, D. Y.
O'Hehir, R. E.
Pali-Schöll, I.
Makela, M. J.
Kowalski, M. L.
Berrissoul, F.
Martinez, F. D.
Pohl, W.
Dolen, W. K.
Vandenplas, O.
Mazon, A.
Mihaltan, F.
Baena-Cagnani, C. E.
Okubo, K.
Roberts, R.
Chen, Y. Z.
Dokic, D.
Zernotti, M. E.
Dykewicz, M. S.
Rottem, M.
Mohammad, Y.
Guzmán, M. A.
Brightling, C. E.
Masjedi, M. R.
Naclerio, R.
Demoly, P.
Cesario, A.
Rabe, K. F.
Melen, E.
Hellquist-Dahl, B.
Emuzyte, R.
Ouedraogo, S.
Hourihane, J. O'B.
Akdis, C. A.
Niżankowska-Mogilnicka, Ewa
van Wijk, R. Gerth
Ansotegui, I. J.
Reitamo, S.
Potter, P.
Humbert, M.
Horak, F.
Stoloff, S. W.
Pawankar, R.
Ratomaharo, J.
Stein, R. T.
Solé, D.
Cepeda, A. M.
Sunyer, J.
Kaliner, M. A.
Maurer, M.
Zar, H. J.
Togias, A.
Jackson, C.
Beghé, B.
Chavannes, N. H.
Annesi-Maesano, I.
Carlsen, K. H.
Carr, W.
Muraro, A.
Neou, A.
van Weel, C.
Bousquet, P. J.
Darsow, U.
Rosenwasser, L.
Martin, F.
Ring, J.
Blaiss, M. S.
Okamoto, Y.
Kuna, P.
El-Gamal, Y.
Zhong, N.
Marshall, G. D.
Baiardini, I.
Bonini, S.
Passalacqua, G.
Ivancevich, J. C.
Chivato Pérez, T.
Durham, S. R.
Gotua, M.
Douagui, H.
Koppelman, G. H.
Romano, A.
Zuberbier, T.
Agache, I.
Braido, F.
Hellings, P. W.
Chiriac, A. M.
Le, L. T.
Spranger, O.
Devillier, P.
Niggemann, B.
Todo-Bom, A.
Popov, T. A.
Boulet, L. P.
Rosado-Pinto, J.
Fokkens, W. J.
Mendez, N. H.
Van Cauwenberge, P.
Postma, D. S.
Calvo, M. A.
Wöhrl, S.
Bateman, E. D.
Fukuda, T.
Bouchard, J.
Caballero, F.
Bennoor, K. S.
Nafti, S.
Viegi, G.
Samolinski, B.
Fonseca, J. A.
Yiallouros, P. K.
Lockey, R. F.
Just, J.
Chkhartishvili, E.
Merk, H.
Dahl, R.
Yusuf, O.M.
Simons, F. E. R.
Kalyoncu, A. F.
Bergmann, K. C.
Vichyanond, P.
Schünemann, H. J.
Orru, M. P.
Ciprandi, G.
Wickman, M.
Nekam, K.
Scadding, G. K.
Bel, E. H.
Gereda, J. E.
Gamkrelidze, A.
Khaltaev, N.
Kim, Y. Y.
Valeyre, D.
Sooronbaev, T.
Mavale-Manuel, S.
González Diaz, S.
Brozek, J. L.
Williams, D.
Pigearias, B.
Yawn, B. P.
Andrianarisoa, A.
Fletcher, M.
Roman Rodriguez, M.
Haahtela, T.
Sheikh, A.
Ohta, K.
Caraballo, L. R.
Didi, T.
Dubakiene, R.
Lemière, C.
Aberer, W.
Deleanu, D.
Kalayci, O.
Ryan, D.
Zidarn, M.
Grouse, L.
Kull, I.
Valenta, R.
Nyembue, T. D.
Rogala, B.
Toskala, E.
Yorgancioglu, A.
Beji, M.
Bindslev Jensen, C.
Bachert, C.
Price, D.
Calderon, M. A.
Fiocchi, A.
Lipworth, B.
Sisul, J. C.
Koffi N'Goran, B.
De Blay, F.
Adachi, M.
Spicak, V.
Cox, L.
Li, J.
Mahboub, B.
Wright, J.
Camargos, P. A. M.
Park, H. S.
Larenas-Linnemann, D.
Valovirta, E.
Ozdemir, C.
Sanchez-Borges, M.
Valiulis, A.
Lieberman, P.
Ben Kheder, A.
Bousquet, J.
Szczeklik, Andrzej
Schmid-Grendelmeier, P.
Panzner, P.
Denburg, J. A.
Tremblay, Y.
Opis:: Allergic rhinitis (AR) and asthma represent global health problems for all age groups. Asthma and rhinitis frequently coexist in the same subjects. Allergic Rhinitis and its Impact on Asthma (ARIA) was initiated during aWorld Health Organization workshop in 1999 (published in 2001). ARIA has reclassified AR as mild/moderate-severe and intermittent/persistent. This classification closely reflects patients’ needs and underlines the close relationship between rhinitis and asthma. Patients, clinicians, and other health care professionals are confronted with various treatment choices for the management of AR. This contributes to considerable variation in clinical practice, and worldwide, patients, clinicians, and other health care professionals are faced with uncertainty about the relative merits and downsides of the various treatment options. In its 2010 Revision, ARIA developed clinical practice guidelines for the management of AR and asthma comorbidities based on the Grading of Recommendation, Assessment, Development and Evaluation (GRADE) system. ARIA is disseminated and implemented in more than 50 countries of the world. Ten years after the publication of the ARIAWorld Health Organization workshop report, it is important to make a summary of its achievements and identify the still unmet clinical, research, and implementation needs to strengthen the 2011 European Union Priority on allergy and asthma in children.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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