Results 11 to 20 of about 210,822 (303)

Simulation of Spatial Polarization Characteristics of a Triorthogonal Antenna Element for the Tasks of HF Band Bearing

Известия высших учебных заведений России: Радиоэлектроника, 2023
Introduction. Achieving improved accuracy and sensitivity of the direction finding of radio signals represents a relevant research direction in the field of modern HF radio monitoring.
G. S. Gribov
doaj   +1 more source

Methods for determining the phase difference of the output signals for the receiving elements of a phased antenna array in a radiophoton circuit with parallel and series pairwise connection of electro-optical modulators [PDF]

Научно-технический вестник информационных технологий, механики и оптики, 2021
Obtaining accurate phase values of the output signals for the receiving elements of a phased array antenna is one of the crucial issues relating to radio-photon technologies in radar and radio communication.
Yaroslav N. Gusenitsa, Andrey V. Morozov, Sergey A. Pokotilo, Alexandr L. Snegirev   +3 more
doaj   +1 more source

Frequency selective reconfigurable microstrip antenna for cognitive radio applications

Advanced Electromagnetics, 2022
For the efficient utilization of electromagnetic radio spectrum cognitive radio communication system is employed, which deals with the spectrum scarcity. An efficient antenna is essential for the appropriate selection of the available frequencies.
D. S. Aldar
doaj   +1 more source

ETSI-Standard Reconfigurable Mobile Device With an Opportunistic Multi-Antenna System Based on Radio and Non-Radio Contexts

IEEE Access, 2020
In state-of-the-art mobile devices (MDs), non-radio contexts (i.e., non-real-time data) provided by various sensors have been excluded in determining the modem configuration because of the problems in applying them in real-time modem operations.
Heungseop Ahn, Daejin Kim, Seungwon Choi, Markus Mueck, Vladimir Ivanov   +4 more
doaj   +1 more source

A novel reverse design method of tag antenna based on image analysis

Journal of Algorithms & Computational Technology, 2020
Since the working efficiency of the entire radio frequency identification system depends on the performance of the radio frequency identification tag antenna, the research and design of the tag antenna have received attention, especially for radio ...
Zhenlu Liu, Zhimin Zhao, Xiaolei Yu, Mengjie Liu, Rendong Ji   +4 more
doaj   +1 more source

A monopole antenna at optical frequencies: single-molecule near-field measurements [PDF]

, 2007
We present a monopole antenna for optical frequencies (~600 THz) and discuss near-field measurements with single fluorescent molecules as a technique to characterize such antennas.
Hulst, Niek F. van, Segerink, Frans B., Taminiau, Tim H.   +2 more
core   +4 more sources

Reconfigurable wideband patch antenna for cognitive radio [PDF]

, 2009
Cognitive radio communication is envisaged to be a new paradigm of methodologies for enhancing the performance of radio communication systems through the efficient utilization of radio spectrum.
AbuTarboush, H.F., AbuTarboush, H.F., Al-Raweshidy, H.S., Al-Raweshidy, H.S., Budimir, D., Budimir, D., Khan, S., Khan, S., Nilavalan, R., Nilavalan, R.   +9 more
core   +2 more sources

Calibration of the Logarithmic-Periodic Dipole Antenna (LPDA) Radio Stations at the Pierre Auger Observatory using an Octocopter [PDF]

, 2017
An in-situ calibration of a logarithmic periodic dipole antenna with a frequency coverage of 30 MHz to 80 MHz is performed. Such antennas are part of a radio station system used for detection of cosmic ray induced air showers at the Engineering Radio ...
Aab, A., Abreu, P., Aglietta, M., Albuquerque, I. F. M., Allekotte, I., Almela, A., Alvarez-Muñiz, J., Anastasi, G. A., Anchordoqui, L., Andrada, B., Andringa, S., Anjos, R. C. dos, Aramo, C., Arqueros, F., Arsene, N., Asorey, H., Assis, P., Aublin, J., Avila, G., Awad, A. Kuotb, Badescu, A. M., Balaceanu, A., Barbato, F., Beatty, J. J., Becker, K. H., Bellido, J. A., Berat, C., Berg, A. M. van den, Berisso, M. Gómez, Bertaina, M. E., Bertou, X., Biermann, P. L., Billoir, P., Biteau, J., Blaess, S. G., Blanco, A., Blazek, J., Bleve, C., Boháčová, M., Boncioli, D., Bonifazi, C., Borodai, N., Botti, A. M., Brack, J., Brancus, I., Bravo, O. Martínez, Bretz, T., Bridgeman, A., Briechle, F. L., Buchholz, P., Bueno, A., Buitink, S., Buscemi, M., Caballero-Mora, K. S., Caccianiga, L., Cancio, A., Canfora, F., Caramete, L., Caruso, R., Casado, A. López, Castellina, A., Castillo, J. Alvarez, Castro, M. L. Díaz, Cataldi, G., Cazon, L., Chavez, A. G., Chinellato, J. A., Chudoba, J., Clay, R. W., Cobos, A., Colalillo, R., Coleman, A., Collica, L., Coluccia, M. R., Conceição, R., Consolati, G., Contreras, F., Cooper, M. J., Coutu, S., Covault, C. E., Cronin, J., Cárdenas, B. Vargas, D'Amico, S., D'Olivo, J. C., Daniel, B., Dasso, S., Daumiller, K., Dawson, B. R., de Almeida, R. M., de Carvalho, W. Rodrigues, de Jong, S. J., De Mauro, G., De Mitri, I., de Oliveira, J., de Oliveira, M. A. Leigui, de Souza, V., Debatin, J., Deligny, O., Di Giulio, C., Di Matteo, A., Diogo, F., Dobrigkeit, C., Dorosti, Q., Dova, M. T., Dundovic, A., Durán, M. Suarez, Ebr, J., Elipe, G. Torralba, Engel, R., Erdmann, M., Erfani, M., Escobar, C. O., Espadanal, J., Etchegoyen, A., Falcke, H., Farrar, G., Fauth, A. C., Fazzini, N., Fenu, F., Fernandez, G. Rodriguez, Fick, B., Figueira, J. M., Filipčič, A., Fratu, O., Freire, M. M., Fujii, T., Fuster, A., Gaior, R., Galicia, J. F. Valdés, Garcia-Pinto, D., García, B., Gaté, F., Gemmeke, H., Gherghel-Lascu, A., Ghia, P. L., Giaccari, U., Giammarchi, M., Giller, M., Glaser, C., Golup, G., González, N., Gorgi, A., Gorham, P., Greus, F. Salesa, Grillo, A. F., Grubb, T. D., Guarino, F., Guedes, G. P., Głas, D., Hampel, M. R., Hansen, P., Harari, D., Harrison, T. A., Harton, J. L., Haungs, A., Hebbeker, T., Heck, D., Heimann, P., Herve, A. E., Hill, G. C., Hojvat, C., Holt, E., Homola, P., Horvath, P., Hrabovský, M., Huege, T., Hulsman, J., Hörandel, J. R., Insolia, A., Isar, P. G., Jandt, I., Jansen, S., Johnsen, J. A., Josebachuili, M., Kambeitz, O., Kampert, K. H., Katkov, I., Keilhauer, B., Kemmerich, N., Kemp, E., Kemp, J., Kieckhafer, R. M., Klages, H. O., Kleifges, M., Kleinfeller, J., Krause, R., Krohm, N., Kuempel, D., Kunka, N., Kääpä, A., LaHurd, D., Lauscher, M., Legumina, R., Letessier-Selvon, A., Lhenry-Yvon, I., Link, K., Lopes, L., Luce, Q., Lucero, A., Luz, R. J. Barreira, López, R., Malacari, M., Mallamaci, M., Mandat, D., Mantsch, P., Mariazzi, A. G., Mariş, I. C., Marsella, G., Martello, D., Martinez, H., Mathes, H. J., Mathys, S., Matthews, J., Matthews, J. A. J., Matthiae, G., Mayotte, E., Mazur, P. O., Medina, C., Medina-Tanco, G., Melo, D., Menshikov, A., Merenda, K. -D., Meza, J. J. Masías, Mezek, G. Kukec, Micheletti, M. I., Middendorf, L., Minaya, I. A., Miramonti, L., Mitrica, B., Mockler, D., Mollerach, S., Montanet, F., Morello, C., Mostafá, M., Muller, M. A., Mussa, R., Müller, A. L., Müller, G., Müller, S., Naranjo, I., Nellen, L., Neto, J. R. T. de Mello, Nguyen, P. H., Niculescu-Oglinzanu, M., Niechciol, M., Niemietz, L., Niggemann, T., Nitz, D., Nosek, D., Novotny, V., Nožka, H., Núñez, L. A., Ochilo, L., Oikonomou, F., Olinto, A., Palatka, M., Pallotta, J., Papenbreer, P., Parente, G., Parra, A., Paul, T., Pech, M., Pedreira, F., Peixoto, C. J. Todero, Pelayo, R., Pereira, L. A. S., Perlín, M., Perrone, L., Peters, C., Petrera, S., Peña-Rodriguez, J., Phuntsok, J., Piegaia, R., Pierog, T., Pieroni, P., Pimenta, M., Pirronello, V., Platino, M., Plum, M., Porowski, C., Prado, R. R., Presti, D. Lo, Privitera, P., Prouza, M., Pękala, J., Quel, E. J., Querchfeld, S., Quinn, S., Quispe, I. D. Vergara, Ramos-Pollan, R., Rautenberg, J., Ravignani, D., Revenu, B., Ridky, J., Risse, M., Ristori, P., Rizi, V., Rogozin, D., Rojo, J. Rodriguez, Roncoroni, M. J., Roth, M., Roulet, E., Rovero, A. C., Ruehl, P., Saffi, S. J., Saftoiu, A., Salamida, F., Salazar, H., Saleh, A., Salina, G., Samarai, I. Al, Sanchez-Lucas, P., Santos, E., Santos, E. M., Sarazin, F., Sarmento, R., Sarmiento, C. A., Sato, R., Schauer, M., Scherini, V., Schieler, H., Schimp, M., Schmidt, D., Scholten, O., Schovánek, P., Schröder, F. G., Schulz, A., Schumacher, J., Sciutto, S. J., Segreto, A., Settimo, M., Shadkam, A., Shellard, R. C., Sigl, G., Silli, G., Sima, O., Snow, G. R., Sommers, P., Sonntag, S., Sorokin, J., Squartini, R., Stanca, D., Stanič, S., Stasielak, J., Stassi, P., Strafella, F., Suarez, F., Sudholz, T., Suomijärvi, T., Supanitsky, A. D., Swain, J., Szadkowski, Z., Sánchez, F., Taboada, A., Taborda, O. A., Tapia, A., The Pierre Auger Collaboration, Theodoro, V. M., Timmermans, C., Tomankova, L., Tomé, B., Travnicek, P., Trini, M., Ulrich, R., Unger, M., Urban, M., Valiño, I., Valore, L., van Aar, G., van Bodegom, P., van Vliet, A., Varela, E., Varner, G., Veberič, D., Verzi, V., Vicha, J., Villaseñor, L., Vitale, P. F. Gómez, Vorobiov, S., Vázquez, R. A., Wahlberg, H., Wainberg, O., Walz, D., Watson, A. A., Weber, M., Weindl, A., Wiencke, L., Wilczyński, H., Winchen, T., Wirtz, M., Wittkowski, D., Wundheiler, B., Yang, L., Yelos, D., Yushkov, A., Zas, E., Zavrtanik, D., Zavrtanik, M., Zepeda, A., Zimmermann, B., Ziolkowski, M., Zong, Z., Zuccarello, F., Śmiałkowski, A., Šmída, R.   +404 more
core   +3 more sources

Experimental study of on-body radio channel performance of a compact ultra wideband antenna [PDF]

, 2015
In this paper, on-body radio channel performance of a compact ultra wideband (UWB) antenna is investigated for body-centric wireless communications.
Abbasi, Qammer H., Ashique, Ratil Hasnat, Khan, Mohammad Monirujjaman, Rahman, Mirazur   +3 more
core   +1 more source

Closed-loop antenna selection for wireless LANs with directional & omni-directional elements [PDF]

, 2011
Throughput and packet error rate are analysed in a home environment for two different 3×3 wireless LAN solutions. A 3×3 EBF approach (using three radio chains) is compared with a reduced cost 2×2 architecture (using two radio chains). In the 2×2 solution
Halls, DE, Hilton, GS, Kong, D, Mellios, E, Nix, AR   +4 more
core   +2 more sources