Journal ArticleDOI
Offset multireflector antennas with perfect pattern symmetry and polarization discrimination
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In this paper, the authors derived conditions that are useful for designing reflector antennas with excellent cross-polarization discrimination, provided a suitable feed such as a corrugated horn is employed.Abstract:
Conditions are derived that are useful for designing reflector antennas with excellent cross-polarization discrimination. These conditions ensure circular symmetry and absence of cross-polarization everywhere in the far field of an antenna, provided a suitable feed such as a corrugated horn is employed. The spherical wave radiated by the fundamental mode of such a feed has circular symmetry around the axis, and it is everywhere free of cross-polarization. An arbitrary sequence of N confocal reflectors (hyperboloids, ellipsoids, paraboloids) is combined with such a feed. It is shown that it is always possible to ensure circular symmetry (and absence of cross-polarization) in the antenna far field by properly choosing the feed axis orientation. If the final reflector is a paraboloid, a simple geometrical procedure can be used. It is also shown that the asymmetry caused by an arbitrary number of reflections can always be eliminated by properly introducing an additional reflection. An application to the problem of producing a horizontal beam using a vertical feed is discussed. Two arrangements are described that may be useful for radio relay systems.read more
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CMB-S4 Science Case, Reference Design, and Project Plan
Kevork N. Abazajian,Graeme E. Addison,Peter Adshead,Zeeshan Ahmed,Steven W. Allen,David Alonso,Marcelo A. Alvarez,Adam Anderson,Kam Arnold,Carlo Baccigalupi,Kathy Bailey,Denis Barkats,Darcy Barron,Peter S. Barry,James G. Bartlett,Ritoban Basu Thakur,Nicholas Battaglia,Eric J. Baxter,Rachel Bean,Chris Bebek,Amy N. Bender,Bradford Benson,Edo Berger,Sanah Bhimani,Colin A. Bischoff,Lindsey Bleem,Sebastian Bocquet,Kimberly K. Boddy,Matteo Bonato,J. Richard Bond,Julian Borrill,François R. Bouchet,Michael L. Brown,Sean Bryan,Blakesley Burkhart,Victor Buza,Karen Byrum,Erminia Calabrese,Victoria Calafut,Robert R. Caldwell,John E. Carlstrom,Julien Carron,Thomas Cecil,Anthony Challinor,C. L. Chang,Yuji Chinone,Hsiao-Mei Sherry Cho,Asantha Cooray,T. M. Crawford,A. T. Crites,Ari Cukierman,Francis-Yan Cyr-Racine,Tijmen de Haan,Gianfranco De Zotti,Jacques Delabrouille,Marcel Demarteau,Mark J. Devlin,Eleonora Di Valentino,Matt Dobbs,Shannon M. Duff,Adriaan J. Duivenvoorden,Cora Dvorkin,William Edwards,Joseph Eimer,Josquin Errard,Thomas Essinger-Hileman,Giulio Fabbian,Chang Feng,Simone Ferraro,Jeffrey P. Filippini,Raphael Flauger,B. Flaugher,Aurelien A. Fraisse,Andrei V. Frolov,Nicholas Galitzki,Silvia Galli,Ken Ganga,Martina Gerbino,Murdock Gilchriese,Vera Gluscevic,Dan Green,Daniel Grin,Evan Grohs,R. Gualtieri,Victor Guarino,Jon E. Gudmundsson,Salman Habib,Gunther Haller,Mark Halpern,N. W. Halverson,Shaul Hanany,Kathleen Harrington,Masaya Hasegawa,Matthew Hasselfield,Masashi Hazumi,Katrin Heitmann,Shawn W. Henderson,Jason W. Henning,J. Colin Hill,Renée Hlozek,G. P. Holder,W. L. Holzapfel,Johannes Hubmayr,Kevin M. Huffenberger,M.E. Huffer,Howard Hui,Kent D. Irwin,Bradley R. Johnson,Doug Johnstone,W. C. Jones,Kirit Karkare,Nobuhiko Katayama,James Kerby,Sarah Kernovsky,Reijo Keskitalo,Theodore Kisner,Lloyd Knox,Arthur Kosowsky,John M Kovac,Ely D. Kovetz,Steve Kuhlmann,Chao-Lin Kuo,N. Kurita,Akito Kusaka,Anne Lähteenmäki,Charles R. Lawrence,Adrian T. Lee,Antony Lewis,Dale Li,Eric V. Linder,Marilena LoVerde,A. E. Lowitz,Mathew S. Madhavacheril,Adam Mantz,Frederick Matsuda,Philip Daniel Mauskopf,Jeff McMahon,Matthew McQuinn,P. Daniel Meerburg,Jean-Baptiste Melin,Joel Meyers,Marius Millea,Joseph J. Mohr,Lorenzo Moncelsi,Tony Mroczkowski,Suvodip Mukherjee,Moritz Münchmeyer,Daisuke Nagai,Johanna Nagy,Toshiya Namikawa,Federico Nati,T. Natoli,Mattia Negrello,Laura Newburgh,Michael D. Niemack,Haruki Nishino,Martin Nordby,Valentine Novosad,Paul O'Connor,Georges Obied,Stephen Padin,S. Pandey,Bruce Partridge,Elena Pierpaoli,Levon Pogosian,C. Pryke,Giuseppe Puglisi,B. Racine,Srinivasan Raghunathan,Alexandra S. Rahlin,Srini Rajagopalan,Marco Raveri,Mark Reichanadter,Christian L. Reichardt,Mathieu Remazeilles,Graca Rocha,Natalie A. Roe,Anirban Roy,J. E. Ruhl,Maria Salatino,Benjamin Saliwanchik,Emmanuel Schaan,Alessandro Schillaci,Marcel Schmittfull,Douglas Scott,Neelima Sehgal,Sarah Shandera,C. D. Sheehy,Blake D. Sherwin,Erik Shirokoff,Sara M. Simon,Anze Slosar,Rachel S. Somerville,David N. Spergel,Suzanne T. Staggs,Antony A. Stark,Radek Stompor,K. T. Story,Chris Stoughton,Aritoki Suzuki,Osamu Tajima,Grant Teply,Keith L. Thompson,Peter T. Timbie,M. Tomasi,Jesse Treu,Matthieu Tristram,Gregory S. Tucker,C. Umilta,Alexander van Engelen,Joaquin Vieira,Abigail G. Vieregg,Mark Vogelsberger,Gensheng Wang,Scott Watson,Martin White,Nathan Whitehorn,Edward J. Wollack,W. L. Kimmy Wu,Zhilei Xu,Siavash Yasini,James Yeck,Ki Won Yoon,E. Y. Young,Andrea Zonca +224 more
TL;DR: In this article, the authors present the science case, reference design, and project plan for the Stage-4 ground-based cosmic microwave background experiment CMB-S4, as well as the experimental data.
Journal ArticleDOI
First Season QUIET Observations: Measurements of Cosmic Microwave Background Polarization Power Spectra at 43 GHz in the Multipole Range 25 <= ℓ <= 475
Colin A. Bischoff,Colin A. Bischoff,A. Brizius,A. Brizius,I. Buder,Yuji Chinone,Yuji Chinone,K. A. Cleary,R. N. Dumoulin,Akito Kusaka,R. Monsalve,Sigurd Naess,Laura Newburgh,Laura Newburgh,R. Reeves,Kendrick M. Smith,Kendrick M. Smith,Ingunn Kathrine Wehus,J. Zuntz,J. Zuntz,J. T. L. Zwart,Leonardo Bronfman,Ricardo Bustos,Ricardo Bustos,Ricardo Bustos,Sarah E. Church,Clive Dickinson,H. K. Eriksen,Pedro G. Ferreira,T. C. Gaier,Joshua O. Gundersen,Masaya Hasegawa,Masashi Hazumi,Kevin M. Huffenberger,M. Jones,Pekka Kangaslahti,D. J. Kapner,Charles R. Lawrence,Michele Limon,Jorge May,Jeff McMahon,Amber Miller,H. Nguyen,G. W. Nixon,T. J. Pearson,Lucio Piccirillo,Simon J. E. Radford,Anthony C. S. Readhead,Joseph L. Richards,Dorothea Samtleben,M. D. Seiffert,Martin C. Shepherd,Suzanne T. Staggs,Osamu Tajima,Osamu Tajima,K. L. Thompson,K. Vanderlinde,K. Vanderlinde,R. Williamson,R. Williamson,B. Winstein +60 more
TL;DR: The Q/U Imaging ExperimenT (QUIET) as discussed by the authors employs coherent receivers at 43 GHz and 94 GHz, operating on the Chajnantor plateau in the Atacama Desert in Chile, to measure the anisotropic in the polarization of the cosmic microwave background (CMB).
Proceedings ArticleDOI
The POLARBEAR Experiment
Zigmund Kermish,Peter A. R. Ade,A. E. Anthony,Kam Arnold,Darcy Barron,D. Boettger,J. Borrill,Scott Chapman,Yuji Chinone,Matt Dobbs,Josquin Errard,Giulio Fabbian,Daniel Flanigan,Gary A. Fuller,A. Ghribi,William F. Grainger,N. W. Halverson,Masaya Hasegawa,Kaori Hattori,Masashi Hazumi,W. L. Holzapfel,Jonathon Howard,P. Hyland,Andrew H. Jaffe,Brian Keating,Theodore Kisner,Adrian T. Lee,M. Le Jeune,Eric V. Linder,Marius Lungu,Frederick Matsuda,Tomotake Matsumura,X. Meng,Nathan Miller,H. Morii,S. Moyerman,M. J. Myers,H. Nishino,Hans P. Paar,E. Quealy,Christian L. Reichardt,Paul L. Richards,Colin Ross,A. Shimizu,Meir Shimon,Chase Owen Shimmin,M. Sholl,Praween Siritanasak,Helmuth Spieler,Nathan Stebor,Bryan Steinbach,R. Stompor,Aritoki Suzuki,Takayuki Tomaru,Carole Tucker,Oliver Zahn +55 more
TL;DR: In this paper, the authors present the design and characterization of the POLARBEAR experiment, which utilizes a unique focal plane of 1,274 antenna-coupled, polarization sensitive TES bolometers cooled to 250 milliKelvin.
Posted Content
PICO: Probe of Inflation and Cosmic Origins
Shaul Hanany,Marcelo A. Alvarez,Emmanuel Artis,Peter Ashton,Jonathan Aumont,R. Aurlien,R. Banerji,R. Belen Barreiro,James G. Bartlett,Soumen Basak,Nick Battaglia,James J. Bock,Kimberly K. Boddy,Matteo Bonato,Julian Borrill,François R. Bouchet,Francois Boulanger,Blakesley Burkhart,Jens Chluba,David T. Chuss,Susan E. Clark,Joelle Cooperrider,B. P. Crill,Gianfranco De Zotti,Jacques Delabrouille,Eleonora Di Valentino,Joy Didier,Olivier Doré,H. K. Eriksen,Josquin Errard,Thomas Essinger-Hileman,Stephen M. Feeney,Jeffrey P. Filippini,Laura M. Fissel,Raphael Flauger,U. Fuskeland,Vera Gluscevic,Krzysztof M. Gorski,Dan Green,Brandon S. Hensley,D. Herranz,J. Colin Hill,E. Hivon,Renée Hložek,Johannes Hubmayr,Bradley R. Johnson,W. C. Jones,Terry J. Jones,Lloyd Knox,A. Kogut,M. López-Caniego,Charles R. Lawrence,Alex Lazarian,Zack Li,Mathew S. Madhavacheril,Jean-Baptiste Melin,Joel Meyers,Calum Murray,Mattia Negrello,Giles Novak,Roger O'Brient,Christopher G. Paine,T. J. Pearson,Levon Pogosian,C. Pryke,Giuseppe Puglisi,Mathieu Remazeilles,Graca Rocha,Marcel Schmittfull,Douglas Scott,Peter Shirron,Ian W. Stephens,Brian M. Sutin,M. Tomasi,Amy Trangsrud,Alexander van Engelen,F. Vansyngel,Ingunn Kathrine Wehus,Qi Wen,Siyao Xu,Karl Young,Andrea Zonca +81 more
TL;DR: The Probe of Inflation and cosmic origins (PICO) is an imaging polarimeter that will scan the sky for 5 years in 21 frequency bands spread between 21 and 799 GHz as discussed by the authors.
References
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Journal ArticleDOI
A method of synthesizing radiation patterns with axial symmetry
H.C. Minnett,B. Thomas +1 more
TL;DR: Symmetrical radiation feed patterns which are consequence of specified form of hybrid mode fields as disclosed by focal plane analysis are described in this article, where the authors show that the feed pattern is a consequence of the hybrid mode field.
Journal ArticleDOI
Horn antennas with uniform power patterns around their axes
TL;DR: In this article, it was shown that a linearly polarized horn that has the same power pattern in all planes through the axis can be made from a synthetic material for which the boundary conditions on E and H are the same.
Journal ArticleDOI
A horn-reflector antenna for space communication
TL;DR: In this paper, the authors describe the mechanical features of the horn-reflector antenna used for receiving signals reflected from the Project Echo balloon satellite and present in some detail the electrical characteristics (radiation patterns and gain) measured at a frequency of 2390 mc.