Zobrazeno 1 - 10
of 21
pro vyhledávání: '"F. Patricio Mena"'
Autor:
Raul A. Monsalve, Christian H. Bye, Jonathan L. Sievers, Vadym Bidula, Ricardo Bustos, H. Cynthia Chiang, Xinze Guo, Ian Hendricksen, Francis McGee, F. Patricio Mena, Garima Prabhakar, Oscar Restrepo, Nithyanandan Thyagarajan
Publikováno v:
The Astrophysical Journal, Vol 961, Iss 1, p 56 (2024)
The Mapper of the IGM Spin Temperature (MIST) is a new ground-based, single-antenna, radio experiment attempting to detect the global 21 cm signal from the Dark Ages and Cosmic Dawn. A significant challenge in this measurement is the frequency depend
Externí odkaz:
https://doaj.org/article/38ca96cbf10543c7b1f30cc752ef6180
Autor:
Diana Cubillos, Camilo Saldaña, David Monasterio, José Pizarro, Leonardo Bronfman, Ricardo Finger, F. Patricio Mena
The increment in the demand for high-frequency monolithic integrated circuits has driven the development of waveguide-to-microstrip transition that allow their characterization and integration with waveguide components. Unfortunately, some of these t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ee71fd7a99f71010e7c2236ac9127bca
https://doi.org/10.21203/rs.3.rs-2802171/v1
https://doi.org/10.21203/rs.3.rs-2802171/v1
Publikováno v:
IEEE Transactions on Antennas and Propagation. 69:8872-8877
In this article we present a miniaturized multiband metamaterial-based antenna for array applications, operating with good radiation performance over the LTE and UMTS uplinks within the 800–3000 MHz range. Each antenna element consists of a radiato
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a3f9a7757a39a02d87baf567b244499
https://doi.org/10.1109/tap.2021.3090861
https://doi.org/10.1109/tap.2021.3090861
Publikováno v:
IEEE Transactions on Terahertz Science and Technology. 11:712-715
When packaging large-width microwave integrated circuits, care has to be taken to avoid structures that could sustain unwanted oscillations. Unfortunately, this situation may not be attainable since large holding cavities are prone to support parasit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82f93b48084508b3e95ce9aa0bfc20d6
https://doi.org/10.1109/tthz.2021.3105580
https://doi.org/10.1109/tthz.2021.3105580
Autor:
Leonardo Bronfman, Pavel A. Yagoubov, V. Tapia, Nicolas Reyes, F. Cuttaia, F. Patricio Mena, Rafael Rodriguez
Publikováno v:
Applied Optics, 57(31), 9223-9229. Optical Society of America (OSA)
Implementation of antireflection layers using structured materials is of common use in millimeter-and submillimeter-wave refractive optic systems. In this work we have systematically studied the effect of such structures in the optical propagation wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::76c540df8aaf6185dc74305571ceb43a
https://doi.org/10.1364/AO.57.009223
https://doi.org/10.1364/AO.57.009223
Autor:
Edgar Geerling, Vicente Ponce, Sam Turner, Leonardo Bronfman, Matias Clasing, Chris M. Taylor, Ernest A. Michael, James M. Griffin, Fernanda Díaz, F. Patricio Mena
Publikováno v:
Mechanical Systems and Signal Processing. 85:1020-1034
By using acoustic emission (AE) it is possible to control deviations and surface quality during micro milling operations. The method of micro milling is used to manufacture a submillimetre waveguide where micro machining is employed to achieve the re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8c4d2321d1fb51fb7d8c0226151885f0
https://doi.org/10.1016/j.ymssp.2016.09.016
https://doi.org/10.1016/j.ymssp.2016.09.016
Publikováno v:
2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).
Sideband Ratio or so called Image Rejection Ration (IRR), is one of the key figures of merit of sideband separating (2SB) receivers. Although these kind of receivers are widely used in ground-based astronomy, a full description of their IRR pattern h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::80e442e1927b7837f154bc08cb176794
https://doi.org/10.1109/irmmw-thz.2019.8873725
https://doi.org/10.1109/irmmw-thz.2019.8873725
Autor:
Leonardo Bronfman, Nicolas Reyes, Jose Pizarro, Ricardo Finger, F. Patricio Mena, Pablo Zorzi
Publikováno v:
Journal of Infrared, Millimeter, and Terahertz Waves. 33:1203-1210
In this work we present a Q-band waveguide orthomode transducer (OMT) based on a dual ridge structure. It was designed to be used in astronomical projects were an excellent broad-band performance is mandatory. Of particular interest is the case of AL
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2044d983349b842db2e8822cc230a367
https://doi.org/10.1007/s10762-012-9942-6
https://doi.org/10.1007/s10762-012-9942-6
Publikováno v:
SPIE Proceedings.
A central component of a sideband separating (2SB) receiver is the quadrature hybrid which splits the incoming radio frequency signal into two branches with a 90°-phase shift. Its fabrication, however, is one of the factors limiting the operational
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a379b508644b7912dfb194891fb11aa7
https://doi.org/10.1117/12.2055626
https://doi.org/10.1117/12.2055626
Autor:
Stephane Claude, Nicolas Reyes, V. Tapia, Leonardo Bronfman, M. A. Sánchez-Carrasco, Doug Henke, F. Patricio Mena
Publikováno v:
SPIE Proceedings.
This work presents a complete study of the optical system for ALMA band 1, which covers the frequency range from 35 to 50 GHz, with the goal of extending the coverage up to 52GHz. Several options have been explored to comply with the stringent techni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::36d7b8d5fb9fe5880dc074a3fde2f01e
https://doi.org/10.1117/12.2055170
https://doi.org/10.1117/12.2055170