Results 31 to 40 of about 15,343,876 (355)
Precise control of optical phase and coherent synthesis in femtosecond laser based optical frequency combs [PDF]
arXiv, 2022 Optical frequency combs are laser sources which are capable of generating discrete, equal-spaced and highly coherent comb modes. Optical frequency comb technique provides a significant bridge to transfer the stability between optical frequency and radio frequency. The advances of this technology greatly promote the development of precision spectroscopy,
arxiv
The Journal of Engineering, 2019 Many applications of wireless power transmission (WPT) require high misalignment tolerance. However, the transmission power of WPT is highly susceptible to the misalignment.
Jinbo Zhao +11 more
doaj +1 more source
Nanomaterials, 2022 In this study, we propose a miniaturized bandpass filter (BPF) developed by combining an approximate circular (36-gon) winding inductor, a circinate capacitor, and five air-bridge structures fabricated on a gallium arsenide (GaAs) substrate using an ...
Jian Chen +6 more
doaj +1 more source
Time-frequency distributions-a review
Proceedings of the IEEE, 1989 A review and tutorial of the fundamental ideas and methods of joint time-frequency distributions is presented. The objective of the field is to describe how the spectral content of a signal changes in time and to develop the physical and mathematical ...
L. Cohen
semanticscholar +1 more source
From Frequency to Meaning: Vector Space Models of Semantics [PDF]
Journal of Artificial Intelligence Research, 2010 Computers understand very little of the meaning of human language. This profoundly limits our ability to give instructions to computers, the ability of computers to explain their actions to us, and the ability of computers to analyse and process text ...
Peter D. Turney, Patrick Pantel
semanticscholar +1 more source
Technologies, 2021 This paper presents a comparative study between two different implementations of digitally-controlled-oscillators (DCOs), whcih is the DAC-based and the digital controller-based DCO in TSMC 65 nm CMOS technology.
Santthosh Selvaraj +2 more
doaj +1 more source
Rain Effect Frequency of Infiltration Rate and Infiltration Capacity in Common Soil: Laboratory Test with Rainfall Simulator [PDF]
, 2020 Analyzing the Influence of Rain Frequency Infiltration Rate and Infiltration Capacity in Common Soil Type (Laboratory Testing Study With Rainfall Simulator). Infiltration is the flow of water into the ground through the soil surface.
Aso, A. (Aso), Nasruddin, N. (Nasruddin)
core
Orthogonal Time Frequency Space Modulation [PDF]
IEEE Wireless Communications and Networking Conference, 2017 A new two-dimensional modulation technique called Orthogonal Time Frequency Space (OTFS) modulation designed in the delay-Doppler domain is introduced.
R. Hadani +10 more
semanticscholar +1 more source
Learning in the Frequency Domain [PDF]
Computer Vision and Pattern Recognition, 2020 Deep neural networks have achieved remarkable success in computer vision tasks. Existing neural networks mainly operate in the spatial domain with fixed input sizes.
Kai Xu +5 more
semanticscholar +1 more source
Refractive-index-sensing radio-frequency comb with intracavity multi-mode interference fibre sensor [PDF]
Optics Express Vol. 26, Issue 15, pp. 19694-19706 (2018), 2018 Optical frequency combs have attracted attention as optical frequency rulers due to their tooth-like discrete spectra together with their inherent mode-locking nature and phase-locking control to a frequency standard. Based on this concept, their applications until now have been demonstrated in the fields of optical frequency metrology and optical ...
arxiv +1 more source