Zobrazeno 1 - 10
of 919
pro vyhledávání: '"Frequency synthesis"'
Publikováno v:
Sensors, Vol 24, Iss 19, p 6285 (2024)
To address the issue of suboptimal spectral purity in Direct Digital Frequency Synthesis (DDFS) within resource-constrained environments, this paper proposes an optimized DDFS technique based on cubic Hermite interpolation. Initially, a DDFS hardware
Externí odkaz:
https://doaj.org/article/2ebdddd7df2a4bea8f681d54864ded1f
Publikováno v:
IEEE Access, Vol 11, Pp 117137-117148 (2023)
This paper compares various performance metrics of the conventional direct digital frequency synthesis (DDFS) with DDFS introducing the quarter method, which is most commonly used among ROM-based DDFS. The evaluation is implemented at the register-tr
Externí odkaz:
https://doaj.org/article/a9e65b89d4c447fe9401665ae29f9c0c
Akademický článek
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Autor:
Xiangye Wei, Liming Xiu
Publikováno v:
IEEE Access, Vol 10, Pp 25767-25785 (2022)
Clock is the most important signal in electronic system. In current practice, the dominant clocking style is the fixed-frequency approach. For a given application, the clock signal is only required to work at a few selected frequencies. Moreover, in
Externí odkaz:
https://doaj.org/article/3582e5e893714f0fb7c2253f3fe3a96a
Publikováno v:
Applied Sciences, Vol 13, Iss 19, p 10819 (2023)
We propose a direct digital frequency synthesizer (DDFS) by using an error-controlled piecewise linear (PWL) approximation method. For a given function and a preset max absolute error (MAE), this method iterates continuously from right to left within
Externí odkaz:
https://doaj.org/article/ebc61933a35a4624a88a6a8411a6772d
Publikováno v:
Applied Sciences, Vol 13, Iss 16, p 9155 (2023)
The frequency synthesizer plays a crucial role in atomic clock technology. In this study, we demonstrate a direct microwave frequency synthesizer for a cesium atomic clock, employing frequency multiplication and a dual-phase-locked loop mode. A mathe
Externí odkaz:
https://doaj.org/article/87e2af3aeea34437a065904f3b72bccc
Autor:
LUO Yuan, ZHU Kai-ran
Publikováno v:
Chinese Journal of Magnetic Resonance, Vol 37, Iss 04, Pp 515-523 (2020)
The quality of the radio frequency (RF) excitation pulse signal has important effects on nuclear quadrupole resonance (NQR) response signal. In this work, a phase-controllable excitation pulse generator was designed based on the 32-bit flash microcon
Externí odkaz:
https://doaj.org/article/c9cf7d45249442e2bcc99548f7911d80
Publikováno v:
Sensors, Vol 23, Iss 7, p 3598 (2023)
The passive multipliers based on semiconductor diodes, most frequently a Schottky type, should be driven by a certain value of input power, where the conversion losses are optimal. This means that the variation in the input power level causes the cha
Externí odkaz:
https://doaj.org/article/c0173a68e3964c8a98a330880a4b8ca1
Publikováno v:
Dianzi Jishu Yingyong, Vol 45, Iss 3, Pp 113-117 (2019)
In order to meet the requirements of MHz high frequency driving in SAW(surface acoustic wave)-electronic cigarette atomization chip, a novel driving and controlling circuit has been designed and developed based on MCU control and DDS(direct digital f
Externí odkaz:
https://doaj.org/article/0a6f0c2fd9924317b1c2afefd906d107
Akademický článek
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