Autor: Modarresi, F. - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: A low-jitter, full-differential PLL in 0.18μm CMOS technology
Autorzy:: Modarresi, F.
Ghasemzadeh, M.
Mazlumi, M.
Amini, A.
Abolfathi, T.
Tematy:: full differential PLL
PFD
VCO
low jitter
CPL
pętla synchronizacji fazy
PLL
generator sterowany napięciem
niski jitter; Pokaż więcej
Data publikacji:: 2016
Powiązania:: https://bibliotekanauki.pl/articles/397765.pdf Link otwiera się w nowym oknie
Źródło:: International Journal of Microelectronics and Computer Science; 2016, 7, 4; 119-122
2080-8755
2353-9607
Pojawia się w:: International Journal of Microelectronics and Computer Science
Opis:: This paper presents a Phase Locked Loop (PLL) which works with minimum jitter in the operation frequency range of 600MHZ to 900MHZ. Utilizing a full differential architecture that consists of several blocks of differential VCO, a differential PFD and a differential CPL leads to limiting the RMS jitter to 4.06ps, with 50mV power supply noise in the frequency range of 750MHz. Simulation results using 0.18μm CMOS TSMC standard technology demonstrate the power-consumption of 4.6mW at the supply voltage of 1.8V.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Stability study of free radicals in 10 MeV electron beam irradiated quartz as an EPR dosimetry method
Autorzy:: Ziaie, F.
Mohammadzadeh, A.
Modarresi, M.
Tematy:: quartz dosimeter
EPR response
dose rate
electron beam
EPR signal stability; Pokaż więcej
Data publikacji:: 2009
Powiązania:: https://bibliotekanauki.pl/articles/148163.pdf Link otwiera się w nowym oknie
Źródło:: Nukleonika; 2009, 54, 4; 251-254
0029-5922
1508-5791
Pojawia się w:: Nukleonika
Opis:: In this work the stability of free radicals induced by a 10 MeV electron beam in quartz samples was studied. The investigations have been done for different doses and different dose rates. For this reason, quartz samples in powder form were irradiated at different dose rates, i.e. 100, 260 and 630 kGy/min for absorbed dose range of similar to 5–80 kGy using the 10 MeV electron beam radiation. The dose values were validated using a polystyrene calorimeter system as a reference standard dosimetry system. The EPR optimum system parameters were defined and EPR responses at room temperature in air were measured and compared. The EPR signal, which is due to the free radicals induced by electron beam, was also investigated at different time intervals to check its stability. The main objective of this work was to study the feasibility of using quartz as a dosimeter. Thus, the variation of EPR signal intensities with the absorbed dose values were evaluated and plotted in a graph. The results show that the variation of dose rate, do not affect considerably the EPR response.
Dostawca treści:: Biblioteka Nauki

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