Browsing by Author "Akgiray, Ahmed Halid"
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Broadband high power amplifier design using GaN HEMT technology
Turt, Doğancan; Akgiray, Ahmed Halid (IEEE, 2021)This paper presents the design and measurements of a broadband GaN HEMT power amplifier intended for point-to-point radios, electronic warfare systems, and test and measurement applications. The proposed power amplifier ... -
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 and characterization of continuous glucose monitoring sensor
The main objective of this thesis is the development and the elaboration of a low cost continuous glucose monitor. This thesis describes the design of miniaturized continuous glucose monitoring sensor based on two needles. ... -
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 ... -
Design of vivaldi antenna operating in two frequency bands with distinct polarizations
This thesis presents a novel dual-polarized antenna design based on two orthogonally place Vivaldi antenna elements and are driven by a specially designed feeding network that splits incoming signal into two wherein one ... -
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 ... -
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 ... -
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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