Journal ArticleDOI
High-Sensitivity Phased Array Receivers for Radio Astronomy
Karl F. Warnick,Rob Maaskant,Marianna Ivashina,David B. Davidson,Brian D. Jeffs +4 more
- Vol. 104, Iss: 3, pp 607-622
TLDR
An overview of research progress, current and planned array-based instruments, and open challenges in these areas related to the new generation of sparse arrays, PAFs, and AAs that are in development for astronomical observatories around the world are given.Abstract:
Phased arrays have a long history in radio astronomy. Large, sparse synthesis arrays have been in use for decades to capture high-resolution images of deep space objects. More recent work has extended the range of applications to other types of arrays, including aperture arrays (AAs) and phased array feeds (PAFs) for multibeam reflector antennas. The extreme sensitivity required for astronomical instrumentation is driving advances in numerical electromagnetic modeling, design optimization of large arrays, low noise amplifiers, minimization of receiver noise, cryogenic PAFs, array calibration, optimal beamforming, interferometric imaging, and array signal processing algorithms for radio-frequency interference mitigation. We give an overview of research progress, current and planned array-based instruments, and open challenges in these areas related to the new generation of sparse arrays, PAFs, and AAs that are in development for astronomical observatories around the world.read more
Citations
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Journal ArticleDOI
A New Class of Planar Ultrawideband Modular Antenna Arrays With Improved Bandwidth
TL;DR: In this paper, a planar ultrawideband modular antenna (PUMA) array is proposed to mitigate low-frequency bandwidth-limiting loop modes and shift problematic common-mode resonances out-of-band.
Book
Phased Arrays for Radio Astronomy, Remote Sensing, and Satellite Communications
TL;DR: Find a modern approach to the analysis, modeling and design of high sensitivity phased arrays by combining network theory, numerical methods and computational electromagnetic simulation techniques to enable full system analysis and design optimization.
Journal ArticleDOI
Digital Receivers for Low-Frequency Radio Telescopes UTR-2, URAN, GURT
V. V. Zakharenko,A. A. Konovalenko,Philippe Zarka,O. M. Ulyanov,M. A. Sidorchuk,S. V. Stepkin,V. L. Koliadin,N. N. Kalinichenko,Aleksander Stanislavsky,V. V. Dorovskyy,V. A. Shepelev,I. N. Bubnov,S. N. Yerin,Valentin Melnik,A. A. Koval,N. V. Shevchuk,I. Y. Vasylieva,K. Mylostna,A. I. Shevtsova,A. O. Skoryk,I. P. Kravtsov,Y. Volvach,M. S. Plakhov,N. Vasilenko,Y. Vasylkivskyi,Dmytro M. Vavriv,V. V. Vinogradov,R. Kozhin,A. Kravtsov,E. Bulakh,A. Kuzin,A. Vasilyev,Vladimir B. Ryabov,A. Reznichenko,V. Bortsov,V. Lisachenko,G. Kvasov,D. V. Mukha,G. Litvinenko,A. Brazhenko,R. V. Vashchishin,O. Pylaev,V. Koshovyy,A. Lozinsky,O. Ivantyshyn,Helmut O. Rucker,Mykhaylo Panchenko,Georg Fischer,A. Lecacheux,Loïc Denis,A. Coffre,Jean-Mathias Grießmeier +51 more
TL;DR: In this article, the authors describe digital radio astronomical receivers used for decameter and meter wavelength observations at the UTR-2 radio telescope, the URAN VLBI system, and the GURT new generation radio telescope.
Journal ArticleDOI
Multibeam and Beam Scanning With Modulated Metasurfaces
TL;DR: In this paper, multibeam and beam-scanning capabilities of metasurface (MTS) antennas using multiple feeds are investigated, where the MTS synthesis is performed by direct inversion of an electric field integral equation (EFIE) obtained after expanding the unknown equivalent impedance profile into Fourier-Bessel basis functions.
Journal ArticleDOI
Benchmarking Ultrawideband Phased Antenna Arrays: Striving for Clearer and More Informative Reporting Practices
Rick W. Kindt,John T. Logan +1 more
TL;DR: Embedded element design and measurement data for an ultrawideband (UWB) flared-notch (Vivaldi) array is presented, tailored to highlight cross-polarization (cross-pol) performance in all scan planes, an important metric that should be tested during array radiator design.
References
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Journal ArticleDOI
Signal processing applications of oblique projection operators
R.T. Behrens,Louis L. Scharf +1 more
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Journal ArticleDOI
The Parkes 21 cm Multibeam Receiver
Lister Staveley-Smith,W. E. Wilson,Trevor S. Bird,M. J. Disney,Ron Ekers,Kenneth C. Freeman,R. F. Haynes,M. W. Sinclair,R. A. Vaile,Rachel L. Webster,Alan E. Wright +10 more
TL;DR: A comparison with other telescopes shows that the Parkes multibeam receiver has significant speed advantages for any large-area λ 21 cm galaxy survey in the velocity range range 0–14000 km s −1 .