Wideband single pixel feed system over 4.6–24 GHz for the Square Kilometre Array

Autor: Magnus Dahlgren, Leif Helldner, John Conway, Jian Yang, Bin Dong, Gary J. Hovey, Jin Cheng-jin, Jonas Flygare, Miroslav Pantaleev

Publikováno v: 2019 International Conference on Electromagnetics in Advanced Applications (ICEAA).

We present the Band B feed system over 4.6–24 GHz designed for the Square Kilometre Array (SKA) reflector for radio astronomy applications. The feed is a Quad-ridge Flared Horn (QRFH) with a customized shape based on spline-defined profiles to achi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::05ebab82d1a25b0615afa29c43a2f5d2
https://doi.org/10.1109/iceaa.2019.8879392

The Circular Eleven Antenna: A New Decade-Bandwidth Feed for Reflector Antennas With High Aperture Efficiency

Autor: Miroslav Pantaleev, Leif Helldner, Jian Yang, Jungang Yin

Publikováno v: IEEE Transactions on Antennas and Propagation. 61:3976-3984

Future ultra-wideband (UWB) radio telescopes require UWB feeds for reflector antennas, and many new UWB feed technologies have gained substantial progress to satisfy the tough specifications for future radio telescope projects, such as the square kil

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c1be5d0f9cf90b262a08acec13ad6c2d
https://doi.org/10.1109/tap.2013.2263275

Design of Compact Dual-Polarized 1.2–10 GHz Eleven Feed for Decade Bandwidth Radio Telescopes

Autor: Jian Yang, Miroslav Pantaleev, Per-Simon Kildal, Leif Helldner

Publikováno v: IEEE Transactions on Antennas and Propagation. 60:2210-2218

The Eleven antenna is a log-periodic folded-dipole-pair array with two unique radiation characteristics: a constant beamwidth and a fixed phase center location over a decade bandwidth. This paper presents a new compact design of a 1.2-10 GHz Eleven a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::33e88e92885775e88ab01dbf8eaaf010
https://doi.org/10.1109/tap.2012.2189732

The IVS data input to ITRF2014

Autor: Axel Nothnagel, Walter Alef, Jun Amagai, Per Helge Andersen, James Anderson, Tatiana Andreeva, Thomas Artz, Sabine Bachmann, Kyriakos Balidakis, Christophe Barache, Alain Baudry, Erhard Bauernfeind, Karen Baver, Christopher Beaudoin, Dirk Behrend, Antoine Bellanger, Anton Berdnikov, Per Bergman, Simone Bernhart, Alessandra Bertarini, Giuseppe Bianco, Ewald Bielmaier, David Boboltz, Johannes Böhm, Sigrid Böhm, Armin Boer, Sergei Bolotin, Mireille Bougeard, Geraldine Bourda, Sylvain Brazeau, Salvo Buttaccio, Letizia Cannizzaro, Roger Cappallo, Brent Carlson, Merri Sue Carter, Patrick Charlot, Chenyu Chen, Maozheng Chen, Jungho Cho, Thomas Clark, Arnaud Collioud, Francisco Colomer, Giuseppe Colucci, Ludwig Combrinck, John Conway, Brian Corey, Ronald Curtis, Mike Daniels, Reiner Dassing, Maria Davis, Pablo de-Vicente, Aletha De Witt, Alexey Diakov, John Dickey, Christopher Dieck, Irv Diegel, Koichiro Doi, Hermann Drewes, Maurice Dube, Gunnar Elgered, Gerald Engelhardt, Mark Evangelista, Qingyuan Fan, Stephen Farley, Leonid Fedotov, Alan Fey, Ricardo Figueroa, Yoshihiro Fukuzaki, Daniel Gambis, Susana Garcia-Espada, Ralph Gaume, Nicole Geiger, John Gipson, Susanne Glaser, Frank Gomez, Jesus Gomez-Gonzalez, David Gordon, Ramesh Govind, Vadim Gubanov, Sergei Gulyaev, Ruediger Haas, David Hall, Sebastian Halsig, Roger Hammargren, Hayo Hase, R. Heinkelmann, Leif Helldner, Cristian Herrera, Ed Himwich, Thomas Hobiger, Christoph Holst, Xiaoyu Hong, Mareki Honma, Xinyong Huang, Urs Hugentobler, Ryuichi Ichikawa, Andreas Iddink, Johannes Ihde, Gennadiy Ilijin, Roxanne Inniss, Alexander Ipatov, Irina Ipatova, Misao Ishihara, D. V. Ivanov, Chris Jacobs, Takaaki Jike, Karl-Ake Johansson, Heidi Johnson, Kenneth Johnston, Hyunhee Ju, Masao Karasawa, Maria Karbon, Pierre Kaufmann, Ryoji Kawabata, Noriyuki Kawaguchi, Eiji Kawai, Michael Kaydanovsky, Mikhail Kharinov, Hideyuki Kobayashi, Kensuke Kokado, Tetsuro Kondo, Edward Korkin, Yasuhiro Koyama, Hana Krasna, Gerhard Kronschnabl, Sergey Kurdubov, Shinobu Kurihara, Jiro Kuroda, Younghee Kwak, Laura La Porta, Ruth Labelle, Jacques LaFrance, Doug Lamb, Sébastien Lambert, Line Langkaas, Roberto Lanotte, Alexey Lavrov, Karine Le Bail, Judith Leek, Bing Li, Huihua Li, Jinling Li, Liu Li, Shiguang Liang, Michael Lindqvist, Xiang Liu, Michael Loesler, Jim Long, Colin Lonsdale, Jim Lovell, Stephen Lowe, Antonio Lucena, Brian Luzum, Chopo Ma, Jun Ma, Giuseppe Maccaferri, Morito Machida, Dan MacMillan, Matthias Madzak, Zinovy Malkin, Seiji Manabe, Franco Mantovani, Vyacheslav Mardyshkin, Dmitry Marshalov, Geir Mathiassen, Shigeru Matsuzaka, Dennis McCarthy, Alexey Melnikov, Linda Messerschmitt, Andrey Mikhailov, Natalia Miller, Donald Mitchell, Julian Andres Mora-Diaz, Arno Mueskens, Yasuko Mukai, Mauro Nanni, Tim Natusch, Monia Negusini, Alexander Neidhardt, Marisa Nickola, George Nicolson, Arthur Niell, Pavel Nikitin, Tobias Nilsson, Tong Ning, Takashi Nishikawa, Carey Noll, Kentarou Nozawa, Clement Ogaja, Hongjong Oh, Hans Olofsson, Per Erik Opseth, Sandro Orfei, Rosa Pacione, Katherine Pazamickas, Felipe Pedreros, William Petrachenko, Lars Pettersson, Pedro Pino, Lucia Plank, Christian Ploetz, Michael Poirier, Joseph Popelar, Markku Poutanen, Zhihan Qian, Jonathan Quick, Ismail Rahimov, Jay Redmond, Brett Reid, John Reynolds, Bernd Richter, Maria Rioja, Andres Romero-Wolf, Chester Ruszczyk, Alexander Salnikov, Pierguido Sarti, Raimund Schatz, Hans-Georg Scherneck, Francesco Schiavone, Ralf Schmid, Ulrich Schreiber, H. Schuh, Walter Schwarz, Cecilia Sciarretta, Anthony Searle, Mamoru Sekido, Manuela Seitz, Stanislav Shabala, Minghui Shao, Kazuo Shibuya, Fengchun Shu, Moritz Sieber, Asmund Skjaeveland, Elena Skurikhina, Sergey Smolentsev, Dan Smythe, Benedikt Soja, Adeildo Sombra, Don Sousa, Ojars Sovers, John Spitzak, Laura Stanford, Carlo Stanghellini, Alan Steppe, Rich Strand, Jing Sun, Igor Surkis, Kazuhiro Takashima, Kazuhiro Takefuji, Hiroshi Takiguchi, Yoshiaki Tamura, Tadashi Tanabe, Emine Tanir, An Tao, Claudio Tateyama, Kamil Teke, Cynthia Thomas, Volkmar Thorandt, Bruce Thornton, Claudia Tierno Ros, Oleg Titov, Mike Titus, Paolo Tomasi, Vincenza Tornatore, Corrado Trigilio, Dmitriy Trofimov, Masanori Tsutsumi, Gino Tuccari, Tasso Tzioumis, Hideki Ujihara, Dieter Ullrich, Minttu Uunila, Daniel Veillette, Tiziana Venturi, Francesco Vespe, Veniamin Vityazev, Alexandr Volvach, Alexander Vytnov, Guangli Wang, Jinqing Wang, Lingling Wang, Na Wang, Shiqiang Wang, Wenren Wei, Stuart Weston, Alan Whitney, Reiner Wojdziak, Yaroslav Yatskiv, Wenjun Yang, Shuhua Ye, Sangoh Yi, Aili Yusup, Octavio Zapata, Reinhard Zeitlhoefler, Hua Zhang, Ming Zhang, Xiuzhong Zhang, Rongbing Zhao, Weimin Zheng, Ruixian Zhou, Nataliya Zubko

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::43e6244dbd2ac64f7ac36f31b7cab422
https://gfzpublic.gfz-potsdam.de/pubman/item/item_2285891

Development of the cryogenic 2–14 GHz Eleven feed system for VLBI2010

Autor: Jian Yang, Anders Emrich, Benjamin Klein, Jan Jonsson, Per-Simon Kildal, Miroslav Panteleev, Leif Helldner, Jungang Yin, Hasan Raza, Terese Ekebrand

Publikováno v: 2012 6th European Conference on Antennas and Propagation (EUCAP).

We present an overview of the recent developments of a cryogenic 2–14 GHz feed system for the Very Long Baseline Interferometry 2010 (VLBL2010) project. The developments include a new balun feeding network, a new circular Eleven feed, system noise

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d41e3b89b81021fbf69aeff0828a6c73
https://doi.org/10.1109/eucap.2012.6206604