Results 31 to 40 of about 3,627,033 (322)
Scientific Reports, 2022 Slowing light in a non-dispersive and controllable fashion opens the door to many new phenomena in photonics. As such, many schemes have been put forward to decrease the velocity of light, most of which are limited in bandwidth or incur high losses.
Lauren E. Barr +4 more
doaj +1 more source
Multi-band antenna for different wireless applications [PDF]
, 2009 A small multi-band compact antenna is presented. The antenna is designed on Roger RT/duroid 5880 with dielectric constant 2.2, multi-band operations is achieved by inserting a slot on the top patch. The antenna has wide impedance bandwidth at 1.2, 1.6, 2.
AbuTarboush, HF +2 more
core +1 more source
Optimization design and experimental test of an electret-based electrostatic energy harvester
工程科学学报, 2018 A theoretical model of a vibrating electret electrostatic energy harvester for a double-ended fixed beam was established herein for a low-frequency vibration energy in the environment.
LU Jun-hu +5 more
doaj +1 more source
IEEE Access, 2018 Currently, HTTP adaptive streaming (HAS) is the state-of-the-art technology for mobile video streaming. The rate adaptation of HAS has been designed to make a trade-off between two contrasting requirements, i.e., enhancing the quality of a video, and ...
Haipeng Du +3 more
doaj +1 more source
The effect of bandwidth in scale-free network traffic [PDF]
, 2006 We model information traffic on scale-free networks by introducing the bandwidth as the delivering ability of links. We focus on the effects of bandwidth on the packet delivering ability of the traffic system to better understand traffic dynamic in real ...
Bollobás B. +11 more
core +2 more sources
Jurnal Elektronika dan Telekomunikasi, 2023 This paper presents a performance comparison of the circular patch unit cell as a unit cell for reflector application at 3.5 GHz frequency using a dielectric substrate between FR4 and F4BMX220 substrates.
Taufiqqurrachman - +11 more
doaj +1 more source
Octave Bandwidth Constant Beamwidth Underwater Receiving Array [PDF]
The Journal of the Acoustical Society of America, 1972 By a method described at the 79th meeting of the Society, a seven-element linear broadside array was designed to give a constant beamwidth of 26° from 10 to 20 kHz. Five elements spaced 12λ at 10 kHz comprised one array. Using three of these and two more, a half-size array with spacing of 12λ at 20 kHz was obtained.
R. J. Holden, E. L. Hixson
openaire +1 more source
Effect of dead space on avalanche speed [PDF]
, 2002 The effects of dead space (the minimum distance travelled by a carrier before acquiring enough energy to impact ionize) on the current impulse response and bandwidth of an avalanche multiplication process are obtained from a numerical model that ...
A. H. You +9 more
core +1 more source
IF impedance and mixer gain of NbN hot electron bolometers [PDF]
, 2007 The intermediate frequency (IF) characteristics, the frequency dependent IF impedance, and the mixer conversion gain of a small area hot electron bolometer (HEB) have been measured and modeled. The device used is a twin slot antenna coupled NbN HEB mixer
A. Baryshev +12 more
core +8 more sources
Optimal Dimensioning of a Constant Bandwidth Server [PDF]
2006 27th IEEE International Real-Time Systems Symposium (RTSS'06), 2006 The Constant Bandwidth Server (CBS) is an effective scheduling technique frequently used to handle overruns and implement resource reservation in real-time systems where tasks have variable execution requirements. The behavior of the server is tuned by two parameters: the server bandwidth, which defines the fraction of the processor allocated to the ...
GIORGIO C. BUTTAZZO, BINI, Enrico
openaire +2 more sources