Mr. Derek Y. Kubo Profile

Derek Y. Kubo

Microwave Engineer

SPIE Involvement:

Author

Publications (21)

Proceedings Article | 11 September 2024 Presentation + Paper

Presentation + Paper

Advanced metrology sensor applications for improved pointing performance of the Greenland Telescope

Nimesh Patel, Pierre Martin-Cocher, Philippe Raffin, George Nystrom, Satoki Matsushita, Chih-Wei Huang, Klaus Willmeroth, Teddy Huang, Derek Kubo, Jun-Yi Koay, Cristina Romero-Canizales, Keiichi Asada, Ming-Tang Chen, Johnson Han, Paul T. Ho, Timothy Norton, T. Sridharan

Proceedings Volume 13094, 130940G (2024) https://doi.org/10.1117/12.3019144

KEYWORDS: Sensors, Antennas, Temperature sensors, Metrology, Telescopes, Receivers, Wind speed, Data modeling

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Proceedings Article | 16 August 2024 Paper

Paper

Commissioning Kuntur: the LLAMA 690GHz receiver at JCMT

Dan Bintley, Akil Marshall, Kuan-Yu Liu, Jamie Cookson, Katie Liu, Andrea McCloskey, Shaoliang Li, Graham Bell, Izumi Mizuno, Per Friberg, William Stahm, Ed Sison, Neal Oliveira, Ming-Tang Chen, Chih-Chiang Han, Derek Kubo, Manual Fernandaz, Paula Benaglia, Silvina Cichowolski, Fatima Correra, Guillermo Gimenez de Castro, Dan Singwong, Apichat Leckngam

Proceedings Volume 13102, 131021J (2024) https://doi.org/10.1117/12.3019709

KEYWORDS: Receivers, Polarization, Telescopes, Observational astronomy, Mirrors, Equipment, Temperature metrology, Observatories, Calibration

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Proceedings Article | 31 August 2022 Poster + Paper

Poster + Paper

The repair work and future plan for the Auto-Correlation Spectral Imaging System (ACSIS) at the James Clerk Maxwell Telescope (JCMT)

Kuan-Yu Liu, Dan Bintley, Ryan Berthold, Graham Bell, Ming-Jye Wang, Ming-Tang Chen, Yau-Te Huang, Chih-Chiang Han, Chau-Ching Chiong, Chao-Te Li, Homin Jiang, Derek Kubo, Gary Fuller, Weiye Zhong, Junhao Liu, Harriet Parsons, Jessica Dempsey, Per Friberg, Maren Purves, Sarah Graves, Jamie Cookson, Ed Sison, Xue-Jian Jiang, Izumi Mizuno, Shaoliang Li, William Stahm, Craig Walther, Wei Yu, Ran Duan

Proceedings Volume 12190, 1219031 (2022) https://doi.org/10.1117/12.2628389

KEYWORDS: Receivers, Astronomy, Telescopes, Amplifiers, Switches, Electronics, Observatories, Imaging systems, Imaging spectroscopy, Heterodyning

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Proceedings Article | 13 December 2020 Presentation + Paper

Presentation + Paper

Status of scientific commissioning of the Greenland Telescope

Jun Yi Koay, Satoki Matsushita, Keiichi Asada, Nimesh Patel, Chih-Wei Huang, Geoffrey Bower, Shu-Hao Chang, Ming-Tang Chen, Chung-Cheng Chen, Ryan Chilson, Chih-Chiang Han, Paul T. Ho, Yau-De Huang, Makoto Inoue, Homin Jiang, Patrick Koch, Shoko Koyama, Cheng-Yu Kuo, Derek Kubo, Chao-Te Li, Ching-Tang Liu, Kuan-Yu Liu, Wen-Ping Lo, Pierre Martin-Cocher, Masanori Nakamura, Timothy Norton, George Nystrom, Peter Oshiro, Jongho Park, Hung-Yi Pu, Philippe Raffin, Ramprasad Rao, Cristina Romero-Canizales, Paul Shaw, Tirupati Sridharan, Ranjani Srinivasan, Ta-Shun Wei, Chen-Yu Yu

Proceedings Volume 11445, 114450Q (2020) https://doi.org/10.1117/12.2561491

KEYWORDS: Telescopes, Atmospheric modeling, Antennas, Refraction, Photogrammetry

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Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

Control and monitoring software for the Greenland Telescope

Chih-Wei Locutus Huang, Satoki Matsushita, Nimesh Patel, Ranjani Srinivasan, Keiichi Asada, Geoffrey Bower, Shu-Hao Chang, Chung-Cheng Chen, Ming-Tang Chen, Ryan Chilson, Chih-Chiang Han, Paul T. Ho, Yau-De Huang, Makoto Inoue, Homin Jiang, Jun Yi Koay, Patrick Koch, Shoko Koyama, Derek Kubo, Cheng-Yu Kuo, Chao-Te Li, Ching-Tang Liu, Kuan-Yu Liu, Wen-Ping Lo, Pierre Martin-Cocher, Masanori Nakamura, Timothy Norton, George Nystrom, Peter Oshiro, Jongho Park, Hung-Yi Pu, Philippe Raffin, Ramprasad Rao, Cristina Romero-Cañizales, Paul Shaw, T. Sridharan, Ta-Shun Wei, Chen-Yu Yu

Proceedings Volume 11452, 114521S (2020) https://doi.org/10.1117/12.2561430

KEYWORDS: Telescopes, Control systems, Telecommunications, Interfaces, Receivers, Radio telescopes, Interferometry, Antennas, Adaptive control, Databases

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Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

Commissioning of Nāmakanui on the JCMT

Izumi Mizuno, Per Friberg, Ryan Berthold, Harriet Parsons, Chih-Chiang Han, Alexis Acohido, Graham Bell, David Berry, Dan Bintley, Ming-Tang Chen, Alyssa Clark, Jamie Cookson, Vernon DeMattos, Jessica Dempsey, Jason Fleck, Kuo-chieh Fu, Miriam Fuchs, Sarah Graves, Paul Ho, Sung-Po Hsu, YauDe Huang, Xue-Jian Jiang, Derek Kubo, John Kuroda, Shaoliang Li, Steve Mairs, Callie Matulonis, Mailani Neil, Neal Oliveira, Maren Purves, Mark Rawlings, Ya-Che Shih, Kevin Silva, Ed Sison, Patrice Smith, Ranjani Srinivasan, William Stahm, Alexandra Tetarenko, Pablo Torne, Craig Walther, Chao-Ching Wang, Ta-Shun Wei

Proceedings Volume 11453, 114533T (2020) https://doi.org/10.1117/12.2561742

KEYWORDS: Receivers, Telescopes, Polarization, Beam shaping, Switches

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Proceedings Article | 9 July 2018 Presentation + Paper

Presentation + Paper

GLT receiver commissioning at JCMT and future JCMT instrumentation

Dan Bintley, Per Friberg, Ryan Berthold, Tim Chuter, Kuan-Yu Liu, Craig Walther, Jessica Dempsey, Paul Ho, Helen McGregor, Satoki Matsushita, Keiichi Asada, Shoko Koyama, Hiroaki Nishioka, Chih-Chiang Han, Chih-Wei Huang, Lupin Lin, Ta-Shun Wei, Derek Kubo, Ranjani Srinivasan, Ramprasad Rao, Geoff Bower, Peter Oshiro, Ming-Tang Chen

Proceedings Volume 10708, 1070815 (2018) https://doi.org/10.1117/12.2313083

KEYWORDS: Receivers, Telescopes, Mirrors, Polarization, Calibration, Astronomy, Antennas, Optical correlators, Observatories

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Proceedings Article | 9 July 2018 Paper

Paper

The first-light receivers for the Greenland Telescope

Chih-Chiang Han, Ming-Tang Chen, Yau-De Huang, Derek Kubo, Chih-Cheng Chang, Shu-Hao Chang, Ta-Shun Wei, Ji-Dian Huang, Chung-Chen Chen, Philippe Raffin, Ching-Tang Liu, Paul T. Ho, Makota Inoue, Satoki Matsushita, Keiichi Asada, Timothy Norton, Ryan Chilson, Ranjani Srinivasan, Kuan-Yu Liu, Chao-Te Li, Daniel Bintley, Craig Walther, Per Friberg, Jessica Dempsey, Hideo Ogawa, Kimihiro Kimura, Yutaka Hasagawa, Sivasankaran Srikanth

Proceedings Volume 10708, 1070835 (2018) https://doi.org/10.1117/12.2313475

KEYWORDS: Receivers, Telescopes, Antennas, Reflectors, Observatories, Polarization

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Proceedings Article | 9 July 2018 Presentation + Paper

Presentation + Paper

Electronics instrumentation for the Greenland Telescope

Derek Kubo, Chih-Chiang Han, Hiroaki Nishioka, Ryan Chilson, Ranjani Srinivasan, Sheng-Feng Yen, Kuo-Chieh Fu, Homin Jiang, Kuan-Yu Liu, Ta-Shun Wei, Chih-Wei Huang, Chen-Yu Yu, Peter Oshiro, Shu-Hao Chang, Chung-Cheng Chen, Philippe Raffin, Yau-De Huang, Pierre Martin-Cocher, Ming-Tang Chen, Makoto Inoue, Satoki Matsushita, Keiichi Asada, Shoko Koyama, Patrick Koch, Paul T. Ho, Yang-Tai Shaw, Timothy Norton, Nimesh Patel, Shepherd Doeleman, Daniel Bintley, Craig Walther, Per Friberg, Jessica Dempsey, Hideo Ogawa, Kimihiro Kimura, Yutaka Hasegawa, Ching-Tang Liu, Kou-Chang Han, Song-Chu Chang, Li-Ming Lu

Proceedings Volume 10708, 1070816 (2018) https://doi.org/10.1117/12.2312241

KEYWORDS: Receivers, Switches, Photonics, Telescopes, Sensors, Antennas, Electronics, Spectroscopy, Oscillators

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Proceedings Article | 6 July 2018 Paper

Paper

Commissioning status of the Greenland Telescope (GLT)

Satoki Matsushita, Keiichi Asada, Makoto Inoue, Hiroaki Nishioka, Chih-Wei Huang, Nimesh Patel, Jun Yi Koay, Shoko Koyama, Patrick Koch, Zheng Meyer-Zhao, Lupin C.-C. Lin, Paul T. Ho, Ming-Tang Chen, Timothy Norton, Kuan-Yu Liu, Chen-Yu Yu, Do-Young Byun, Juan-Carlos Algaba Marcos, Alex Allardi, Geoffrey Bower, Shu-Hao Chang, Chung-Chen Chen, Ryan Chilson, Aaron Faber, Chih-Chiang Han, Yau-De Huang, Homin Jiang, Derek Kubo, Ching-Tang Liu, Wen-Ping Lo, Pierre Martin-Cocher, Masanori Nakamura, George Nystrom, Peter Oshiro, Hung-Yi Pu, Philippe Raffin, Paul Shaw, Williams Snow, Ranjani Srinivasan, Ta-Shun Wei, Ryan Berthold, Daniel Bintley, Jessica Dempsey, Per Friberg, Craig Walther, Jonathan Weintroub, André Young, Ken Young, T. Sridharan, Sheperd Doeleman, Roger Brissenden, Hideo Ogawa, Kimihiro Kimura, Yutaka Hasegawa, Jinchi Hao, Kou-Chang Han, Song-Chu Chang, Li-Ming Lu

Proceedings Volume 10700, 1070029 (2018) https://doi.org/10.1117/12.2310046

KEYWORDS: Receivers, Telescopes, Antennas, Astronomy, Observatories, Radio optics, Radio astronomy, Radio interferometry, Submillimeter telescopes

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Proceedings Article | 6 July 2018 Presentation + Paper

Presentation + Paper

The Greenland telescope: Thule operations

Ming-Tang Chen, Philippe Raffin, Paul T. Ho, Makoto Inoue, Ching-Tang Liu, Yau-De Huang, Chih-Chiang Han, Timothy Norton, Satoki Matsushita, Keiichi Asada, George Nystrom, Derek Kubo, Nimesh Patel, Shu-Hao Chang, Ta-Shun Wei, Pierre Martin-Cocher, Homin Jiang, Paul Shaw, Hiroaki Nishioka, Chih-Wei L. Huang, Chung-Chen Chen, Patrick Koch, Ryan Chilson, Ranjani Srinivasan, Kuan-Yu Liu, Chen-Yu Yu, Geoffrey Bower, Peter Oshiro, William Snow, Shoko Koyama, Jun Yi Koay, Chao-Te Li, Wen-Ping Lo, Chih-Cheng Chang, Masanori Nakamura, Zheng Meyer-Zhao, Hung-Yi Pu, Lupin Lin, Daniel Bintley, Craig Walther, Per Friberg, Jessica Dempsey, T. Sridharan, Sheperd Doeleman, Roger Brissenden, Hideo Ogawa, Kimihiro Kimura, Yutaka Hasegawa, Jinchi Hao, Kuo-Chang Han, Song-Chu Chang, Li-Ming Lu, Juan-Carlos Algaba Marcos, Alex Allardi, Aaron Faber, Fu-li Hsu, Wei-Long Chen, Fang-Chia Hsieh

Proceedings Volume 10700, 107000H (2018) https://doi.org/10.1117/12.2313378

KEYWORDS: Antennas, Telescopes, Receivers, Observatories, Astronomy, Astrophysics

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Proceedings Article | 6 July 2018 Paper

Paper

Control and monitoring system for the Greenland Telescope: computers, network and software

Hiroaki Nishioka, Chih-Wei Locutus Huang, Nimesh Patel, Derek Kubo, Ranjani Srinivasan, Chih-Chiang Han, Chen-Yu Yu, Homin Jiang, Lupin Chun-Che Lin, Zheng Meyer-Zhao, Pierre Martin-Cocher, Satoki Matsushita, Keiichi Asada, Makoto Inoue, Shoko Koyama, Craig Walther, Dan Bintley, Kuan-Yu Liu, Ryan Berthold, Tim Chuter, Per Friberg, Geoffrey Bower, Shu-Hao Chang, Ming-Tang Chen, Jessica Dempsey, Sheperd Doeleman, Yau-De Huang, Paul T. Ho, Jun-Yi Koay, Patrick Koch, Ching-Tang Liu, Wen-Ping Lo, Masanori Nakamura, Timothy Norton, George Nystrom, Peter Oshiro, Ta-Shun Wei

Proceedings Volume 10700, 107005N (2018) https://doi.org/10.1117/12.2313104

KEYWORDS: Computing systems, Receivers, Global Positioning System, Antennas, Spectroscopy, Control systems, Telescopes, Switches, Sensors, Astronomy

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Proceedings Article | 27 July 2016 Paper

Paper

The Greenland Telescope: antenna retrofit status and future plans

Philippe Raffin, Paul T. Ho, Keiichi Asada, Raymond Blundell, Geoffrey Bower, Roberto Burgos, Chih-Cheng Chang, Ming-Tang Chen, Robert Christensen, You-Hua Chu, Paul Grimes, C. Han, Chih-Wei Huang, Yau-De Huang, Fang-Chia Hsieh, Makoto Inoue, Patrick Koch, Derek Kubo, Steve Leiker, Lupin Lin, Ching-Tang Liu, Shih-Hsiang Lo, Pierre Martin-Cocher, Satoki Matsushita, Masanori Nakamura, Zheng Meyer-Zhao, Hiroaki Nishioka, Tim Norton, George Nystrom, Scott Paine, Nimesh Patel, Hung-Yi Pu, William Snow, T. Sridharan, Ranjani Srinivasan, Jackie Wang

Proceedings Volume 9906, 99060U (2016) https://doi.org/10.1117/12.2232889

KEYWORDS: Antennas, Telescopes, Reflectors, Astrophysics, Electronics, Receivers, Space telescopes, Servomechanisms, 3D modeling, Foam

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Proceedings Article | 19 July 2016 Paper

Paper

Development of digital sideband separating down-conversion for Yuan-Tseh Lee Array

Chao-Te Li, Derek Kubo, Jen-Chieh Cheng, John Kuroda, Ranjani Srinivasan, Solomon Ho, Kim Guzzino, Ming-Tang Chen

Proceedings Volume 9914, 99140E (2016) https://doi.org/10.1117/12.2230961

KEYWORDS: Receivers, Optical correlators, Galactic astronomy, Analog electronics, Field programmable gate arrays, Calibration, Digital signal processing, Attenuators, Astronomy, Linear filtering

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Proceedings Article | 23 July 2014 Paper

Paper

Instrumentation for single-dish observations with The Greenland Telescope

Paul Grimes, K. Asada, R. Blundell, R. Burgos, H-H. Chang, M. Chen, D. Goldie, C. Groppi, C. Han, P. T. Ho, Y. Huang, M. Inoue, D. Kubo, P. Koch, J. Leech, E. de Lera Acedo, P. Martin-Cocher, H. Nishioka, M. Nakamura, S. Matsushita, S. Paine, N. Patel, P. Raffin, W. Snow, T. Sridharan, R. Srinivasan, C. Thomas, E. Tong, M.-J. Wang, C. Wheeler, S. Withington, G. Yassin, L.-Z. Zeng

Proceedings Volume 9153, 91531V (2014) https://doi.org/10.1117/12.2056969

KEYWORDS: Antennas, Telescopes, Terahertz radiation, Prototyping, Galactic astronomy, Astronomy, Heterodyning, Receivers, Field programmable gate arrays, Observatories

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The Greenland Telescope project will deploy and operate a 12m sub-millimeter telescope at the highest point of the Greenland i e sheet. The Greenland Telescope project is a joint venture between the Smithsonian As- trophysical Observatory (SAO) and the Academia Sinica Institute of Astronomy and Astrophysics (ASIAA). In this paper we discuss the concepts, specifications, and science goals of the instruments being developed for single-dish observations with the Greenland Telescope, and the coupling optics required to couple both them and the mm-VLBI receivers to antenna. The project will outfit the ALMA North America prototype antenna for Arctic operations and deploy it to Summit Station,1 a NSF operated Arctic station at 3,100m above MSL on the Greenland I e Sheet. This site is exceptionally dry, and promises to be an excellent site for sub-millimeter astronomical observations. The main science goal of the Greenland Telescope is to carry out millimeter VLBI observations alongside other telescopes in Europe and the Americas, with the aim of resolving the event horizon of the super-massive black hole at the enter of M87. The Greenland Telescope will also be outfitted for single-dish observations from the millimeter-wave to Tera-hertz bands. In this paper we will discuss the proposed instruments that are currently in development for the Greenland Telescope - 350 GHz and 650 GHz heterodyne array receivers; 1.4 THz HEB array receivers and a W-band bolometric spectrometer. SAO is leading the development of two heterodyne array instruments for the Greenland Telescope, a 48- pixel, 325-375 GHz SIS array receiver, and a 4 pixel, 1.4 THz HEB array receiver. A key science goal for these instruments is the mapping of ortho and para H2D+ in old protostellar ores, as well as general mapping of CO and other transitions in molecular louds. An 8-pixel prototype module for the 350 GHz array is currently being built for laboratory and operational testing on the Greenland Telescope. Arizona State University are developing a 650 GHz 256 pixel SIS array receiver based on the KAPPa SIS mixer array technology and ASIAA are developing 1.4 THz HEB single pixel and array receivers. The University of Cambridge and SAO are collaborating on the development of the CAMbridge Emission Line Surveyor (CAMELS), a W-band `on- hip' spectrometer instrument with a spectral resolution of R ~ 3000. CAMELS will consist of two pairs of horn antennas, feeding super conducting niobium nitride filter banks read by tantalum based Kinetic Inductance Detectors.

Proceedings Article | 22 July 2014 Paper

Paper

The Greenland Telescope (GLT): antenna status and future plans

Philippe Raffin, Juan Carlos Algaba-Marcosa, Keiichi Asada, Raymond Blundell, Roberto Burgos, Chih-Cheng Chang, Ming-Tang Chen, Robert Christensen, Paul Grimes, C. Han, Paul T. Ho, Yau-De Huang, Makoto Inoue, Patrick Koch, Derek Kubo, Steve Leiker, Ching-Tang Liu, Pierre Martin-Cocher, Satoki Matsushita, Masanori Nakamura, Hiroaki Nishioka, George Nystrom, Scott Paine, Nimesh Patel, Nicolas Pradel, Hung-Yi Pu, H.-Y. Shen, William Snow, Tirupati Sridharan, Ranjani Srinivasan, Edward Tong, Jackie Wang

Proceedings Volume 9145, 91450G (2014) https://doi.org/10.1117/12.2056836

KEYWORDS: Antennas, Telescopes, Inspection, Prototyping, Servomechanisms, Computer programming, Manufacturing, Carbon, Reflectors, Astrophysics

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Proceedings Article | 23 July 2008 Paper

Paper

Platform deformation refined pointing and phase correction for the AMiBA hexapod telescope

Patrick Koch, Michael Kesteven, Yu-Yen Chang, Yau-De Huang, Philippe Raffin, Ke-Yung Chen, Guillaume Chereau, Ming-Tang Chen, Paul Ho, Chih-Wie Huang, Fabiola Ibañez-Romano, Homin Jiang, Yu-Wei Liao, Kai-Yang Lin, Guo-Chin Liu, Sandor Molnar, Hiroaki Nishioka, Keiichi Umetsu, Fu-Cheng Wang, Jiun-Huei Proty Wu, Pablo Altamirano, Chiao-Hao Chang, Shu-Hao Chang, Su-Wei Chang, Chi-Chiang Han, Derek Kubo, Chao-Te Li, Pierre Martin-Cocher, Peter Oshiro

Proceedings Volume 7018, 70181L (2008) https://doi.org/10.1117/12.787852

KEYWORDS: Antennas, Telescopes, Error analysis, Information technology, Photogrammetry, Data modeling, Polarization, Collimation, Optical telescopes, Charge-coupled devices

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Proceedings Article | 12 July 2008 Paper

Paper

Overview of engineering activities at the SMA

R. Christensen, D. Kubo, Ramprasad Rao

Proceedings Volume 7016, 701608 (2008) https://doi.org/10.1117/12.787673

KEYWORDS: Receivers, Antennas, Shape memory alloys, Optical correlators, Cameras, Ozone, Telescopes, Observatories, Polarization, Astronomy

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Proceedings Article | 10 July 2008 Paper

Paper

AMiBA first year observation

Kai-yang Lin, Chao-Te Li, Juin-Huei Proty Wu, Patrick Koch, Keiichi Umetsu, Guo-Chin Liu, Hiroaki Nishioka, Pablo Altamirano, Derek Kubo, Chih-Chiang Han, Yao-De Huang, Philippe Raffin, Michael Kesteven, Chih-Wei Huang, Yo-Wei Liao, Fu-Cheng Wang, Su-Wei Chang, Chia-Hao Chang, Peter Oshiro, Shu-Hao Chang, Homin Jiang, Ming-Tang Chen, Yue-Jing Hwang, Warwick Wilson, Ke-Jung Chen, Fabiola Ibanez-Romano, Paul T.-P. Ho, Wei-Yan Pauchy Hwang

Proceedings Volume 7012, 701207 (2008) https://doi.org/10.1117/12.788347

KEYWORDS: Visibility, Receivers, Calibration, Optical correlators, Telescopes, Galaxy groups and clusters, Polarization, Switching, Reflectors, Mirrors

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Proceedings Article | 27 June 2006 Paper

Paper

Characterization of instrumental phase stability

D. Kubo, T. Hunter, R. Christensen, P. Yamaguchi

Proceedings Volume 6275, 62751Y (2006) https://doi.org/10.1117/12.672927

KEYWORDS: Antennas, Receivers, Analog electronics, Oscillators, Astronomy, Calibration, Phase measurement, Shape memory alloys, Control systems, Optical correlators

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Proceedings Article | 8 October 2004 Paper

Paper

A wideband analog correlator system for AMiBA

Chao-Te Li, Derek Kubo, Chih-Chiang Han, Chung-Cheng Chen, Ming-Tang Chen, Chun-Hsien Lien, Huei Wang, Ray-Ming Wei, Chia-Hsiang Yang, Tzi-Dar Chiueh, Jeffrey Peterson, Michael Kesteven, Warwick Wilson

Proceedings Volume 5498, (2004) https://doi.org/10.1117/12.550993

KEYWORDS: Optical correlators, Receivers, Analog electronics, Microwave radiation, Amplifiers, Data acquisition, Calibration, Telescopes, Field programmable gate arrays, Oscillators

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Showing 5 of 21 publications

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