Results 21 to 30 of about 186,285 (262)

Bounding inconsistency using a novel threshold metric for dead reckoning update packet generation [PDF]

open access: yes, 2008
Human-to-human interaction across distributed applications requires that sufficient consistency be maintained among participants in the face of network characteristics such as latency and limited bandwidth.
Aspin, R   +5 more
core   +2 more sources

Estimator selection: a new method with applications to kernel density estimation [PDF]

open access: yes, 2016
Estimator selection has become a crucial issue in non parametric estimation. Two widely used methods are penalized empirical risk minimization (such as penalized log-likelihood estimation) or pairwise comparison (such as Lepski's method). Our aim in this
Lacour, Claire   +2 more
core   +5 more sources

Full characterization and analysis of a terahertz heterodyne receiver based on a NbN hot electron bolometer [PDF]

open access: yes, 2006
We present a complete experimental characterization of a quasioptical twin-slot antenna coupled small area (1.0×0.15 µm^2) NbN hot electron bolometer (HEB) mixer compatible with currently available solid state tunable local oscillator (LO) sources.
A. Baryshev   +11 more
core   +3 more sources

Analysis of ultrasonic transducers with fractal architecture [PDF]

open access: yes, 2008
Ultrasonic transducers composed of a periodic piezoelectric composite are generally accepted as the design of choice in many applications. Their architecture is normally very regular and this is due to manufacturing constraints rather than performance ...
ANTHONY J. MULHOLLAND   +9 more
core   +1 more source

Jitter requirements of the sampling clock in software radio receivers [PDF]

open access: yes, 2006
The effective number of bits of an analog-to-digital converter (ADC) is not only limited by the quantization step inaccuracy but also by sampling time uncertainty. According to a commonly used model, the error caused by timing jitter, integrated over the
Arkesteijn, Vincent J.   +2 more
core   +2 more sources

Design of a Microstrip Three-State Switchable and Fully Tunable Bandpass Filter With an Extra-Wide Frequency Tuning Range

open access: yesIEEE Access, 2020
In this study, a new method and structure are proposed to design of a switchable and fully tunable microstrip bandpass filter (BPF). The central frequency and bandwidth (or the resonance frequency of the resonators, coupling coefficient between ...
Chi-Feng Chen
doaj   +1 more source

Jitter Analysis and a Benchmarking Figure-of-Merit for Phase-Locked Loops [PDF]

open access: yes, 2009
This brief analyzes the jitter as well as the power dissipation of phase-locked loops (PLLs). It aims at defining a benchmark figure-of-merit (FOM) that is compatible with the well-known FOM for oscillators but now extended to an entire PLL.
Gao, X.   +3 more
core   +2 more sources

Electron doping evolution of the magnetic excitations in NaFe$_{1-x}$Co$_x$As [PDF]

open access: yes, 2016
We use time-of-flight (ToF) inelastic neutron scattering (INS) spectroscopy to investigate the doping dependence of magnetic excitations across the phase diagram of NaFe$_{1-x}$Co$_x$As with $x=0, 0.0175, 0.0215, 0.05,$ and $0.11$. The effect of electron-
Abernathy, D. L.   +9 more
core   +2 more sources

A Widely Tunable Compact Bandpass Filter Based on a Switched Varactor-Tuned Resonator

open access: yesIEEE Access, 2019
This paper presents a compact tunable bandpass filter (BPF) based on a switched varactor tuned resonator with a wide frequency-tuning range and a constant absolute bandwidth (ABW).
Minjae Jung, Byung-Wook Min
doaj   +1 more source

Propagation of THz radiation in air over a broad range of atmospheric temperature and humidity conditions

open access: yesScientific Reports, 2023
As the need for higher data rates for communication increases, the terahertz (THz) band has drawn considerable attention. This spectral region promises a much wider bandwidth and the transmission of large amounts of data at high speeds.
Fatima Taleb   +12 more
doaj   +1 more source

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