Results 71 to 80 of about 36,961 (291)
Architectures for RF Frequency synthesizers [PDF]
, 2002 Frequency synthesizers are an essential building block of RF communication products. They can be found in traditional consumer products, in personal communication systems, and in optical communication equipment.
Nauta, Bram, Vaucher, Cicero S.
core +2 more sources
Bioinspired Tissue Transparency: Achieving Sclera‐to‐Cornea Transplantation
Advanced Science, EarlyView.A bioinspired decellularization‐compression‐locking tactic (DCLT) is developed to transform human sclerae into transparent corneal substitutes. These clear, robust, and pro‐regenerative substitutes are capable of repairing complex corneal injuries, including chemical burns, keratoconus, and penetrating wounds, demonstrating their clinical potential to ...
Xiuli Sun +8 more
wiley +1 more source
Mutually Coupled Time-to-Digital Converters (TDCs) for Direct Time-of-Flight (dTOF) Image Sensors ‡
Sensors, 2018 Direct time-of-flight (dTOF) image sensors require accurate and robust timing references for precise depth calculation. On-chip timing references are well-known and understood, but for imaging systems where several thousands of pixels require seamless ...
Augusto Ronchini Ximenes +2 more
doaj +1 more source
A fuzzy control design case: The fuzzy PLL [PDF]
The aim of this paper is to present a typical fuzzy control design case. The analyzed controlled systems are the phase-locked loops (PLL's)--classic systems realized in both analogic and digital technology.
Bogdan, I., Teodorescu, H. N.
core +1 more source
Multi-color Cavity Metrology [PDF]
, 2012 Long baseline laser interferometers used for gravitational wave detection have proven to be very complicated to control. In order to have sufficient sensitivity to astrophysical gravitational waves, a set of multiple coupled optical cavities comprising ...
Adhikari, Rana X. +13 more
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Real‐Time In Vivo Cellular‐Level Imaging During Puncture
Advanced Science, EarlyView.We present an artificial‐intelligence‐empowered integrative‐light‐field microendoscopy (AIM) needle that delivers real‐time in vivo, diffraction‐limited cellular‐level imaging during puncture and visualizes layered microstructures along the needle path. As a microscopic complement to CT/ultrasound, it improves sampling localization and adds preliminary
Huifang Gao +13 more
wiley +1 more source
Noise shaping Asynchronous SAR ADC based time to digital converter [PDF]
, 2018 Time-to-digital converters (TDCs) are key elements for the digitization of timing information in modern mixed-signal circuits such as digital PLLs, DLLs, ADCs, and on-chip jitter-monitoring circuits.
Katragadda, Sowmya
core +1 more source
Advanced Science, EarlyView.Tracing the evolution from structural regulation to multifunctional integration, this paper systematically analyzes modification strategies for carbon‐based electrodes. It evaluates how element doping, surface functionalization, and composite material design affect the electrode performance, and offers perspectives on future applications and challenges
Yunlei Wang +4 more
wiley +1 more source
Novel quick-response, digital phase-locked loop
Electronics Letters, 1988 The structure of a conventional digital phase-locked loop has been modified to improve its transient response. The superiority of the new loop has been established analytically and by computer simulation results.
B.C. Sarkar, S. Chattopadhyay
openaire +1 more source
A comparison of methods for DPLL loop filter design [PDF]
Four design methodologies for loop filters for a class of digital phase-locked loops (DPLLs) are presented. The first design maps an optimum analog filter into the digital domain; the second approach designs a filter that minimizes in discrete time ...
Aguirre, S. +3 more
core +1 more source