Browsing Electrical & Electronics Engineering by Author "(ORCID 0000-0002-7373-4158 & YÖK ID 319662) Akgiray, Ahmed"
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Cryogenic 1.2 to 116 GHz receiver for large arrays
Weinreb, S.; Mani, H.; Zhong, W.; Flygare, J.; Billade, B.; Akgiray, Ahmed Halid; Dong, L. (IEEE, 2018)Current and future large arrays for radio astronomy are compared and the Next Generation Very Large Array, ngVLA, is introduced. Receiver requirements are described and a 4-feed system covering 1.2 to 116 GHz, in a single ... -
Design of compact monopulse standing wave slotted array in ku-band
Akgiray, Ahmed Halid; Nawaz, Wasim (IEEE, 2019)In modern radar and communication systems, high gain, high power capability and low-profile front-end antenna systems are frequently utilized. In this paper, a compact, lightweight, high reflection bandwidth and high gain ... -
An MMIC low-noise amplifier design technique
Varonen, M.; Reeves, R.; Kangaslahti, P.; Samoska, L.; Kooi, J. W.; Cleary, K.; Gawande, R. S.; Akgiray, Ahmed Halid; Fung, A.; Gaier, T.; Weinreb, S.; Readhead, A. C. S.; Lawrence, C.; Sarkozy, S.; Lai, R. (IEEE, 2016-03)In this paper we discuss the design of low-noise amplifiers (LNAs) for both cryogenic and room-temperature operation in general and take the stability and linearity of the amplifiers into special consideration. Oscillations ... -
A multioctave 8 GHz-40 GHz receiver for radio astronomy
Kooi, J. W.; Soriano, M.; Bowen, j.; Abdulla, Z.; Samoska, L.; Fung, A. K.; Manthena, R.; Hoppe, D.; Javadi, H.; Crawford, T.; Hayton, D. J.; Malo-Gómez, I.; Gallego-Puyol, J. D.; Akgiray, Ahmed Halid; Gabritchidze, B.; Cleary, K. A.; Jacobs, C.; Lazio, J. (IEEE, 2023-04)Accurate measurement of angular positions on the sky requires a well-defined system of reference, something that in practice is realized by the International Celestial Reference Frame (ICRF) with observations of distant ... -
X- To Ka- Band cryogenic LNA module for very long baseline interferometry
Fung, A.; Samoska, L.; Bowen, J.; Montanez, S.; Kooi, J.; Soriano, M.; Jacobs, C.; Manthena, R.; Hoppe, D.; Akgiray, Ahmed Halid; Lai, R.; Mei, X.; Barsky, M. (IEEE, 2020)We report a new result of a packaged low noise amplifier (LNA) module with wide bandwidth of 5 to 35 GHz and low noise temperature performance of 10 -18 K, while operated at 10 K ambient. The LNA used 3-stages of sub-50 ...
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