Browsing by Author "Akgiray, Ahmed Halid"
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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 ... -
Effects of photon statistics on quantum random number generators and photon detection efficiency
The effects of photon statistics on different quantum applications are explained in this thesis. There are mainly two sections: the first section focuses on the randomly bunched and coherently bunched photons' continuous ... -
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 ... -
Side-channel attack to quantum communications by exploiting electromagnetic radiations of the single photon detectors
Jam, Naser Chamani (2020-08-30)In this thesis an unprecedented cyber-physical attack which can be a game changer in the quantum cryptosystems' security is explained. This attack is the first non-optical patented intercept in quantum field that is based ... -
Two-stage broadband class-AB high power amplifier design using gan hemt technology
Modern radio systems need broadband, high efficiency power amplifiers to cover a wide frequency spectrum with reliable system performance. Linearity is another critical parameter in power amplifier design and there is a ... -
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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