Results 11 to 20 of about 91,837 (247)

Compact wideband patch antenna for 5 and 6 GHz WLAN applications [PDF]

open access: yes, 2008
Copyright @ 2008 IEICEA wideband rectangular and circular mistostrip patch antenna for 5 and 6 GHz WLAN applications is presented. The rectangular and the circular patches are fed by microstrip line.
AbuTarboush, HF   +2 more
core   +5 more sources

Ultra-wideband radio signals distribution in FTTH networks [PDF]

open access: yes, 2008
The use of an ultra-wideband (UWB) radio technique is proposed as a viable solution for the distribution of high-definition audio/video content in fiber-to-the-home (FTTH) networks.
Roberto Llorente   +13 more
core   +1 more source

Velocity Dealiased Spectral Estimators of Range Migrating Targets using a Single Low-PRF Wideband Waveform [PDF]

open access: yes, 2013
Wideband radars are promising systems that may provide numerous advantages, like simultaneous detection of slow and fast moving targets, high range-velocity resolution classification, and electronic countermeasures.
Bidon, Stéphanie   +3 more
core   +1 more source

Wideband blade monopole antenna with sleeved coaxial feed [PDF]

open access: yes, 2009
A wideband planar monopole antenna requiring a small ground plane is described. Numerical and measured results confirms the antenna has good radiation efficiency and stable omni-directional radiation patterns over an impedance bandwidth of 4.1:1 covering
Morrow, Ivor L.   +7 more
core   +1 more source

CPW Fed UWB Antenna by EBGs With Wide Rectangular Notched-Band

open access: yesIEEE Access, 2016
Ultra-wideband (UWB) antennas with wide rectangular notched-band are proposed in this paper. The rectangular notched-band design is realized by placing dual mushroom-type electromagnetic-bandgap (EBG) structures on the CPW feeding line.
Lin Peng   +4 more
doaj   +1 more source

An Electrically Tunable Terahertz Filter Based on Liquid-Crystal-Filled Slits with Wall Corrugations

open access: yesPhotonics, 2022
We propose a type of hollow planar waveguide with corrugated walls, which can realize electrically tunable terahertz (THz) filtering by filling the slit with liquid crystals. When the THz signals propagate in a planar waveguide with periodic corrugations,
Shi-Yang Zhang   +6 more
doaj   +1 more source

Multi-functional Device with Switchable Functions of Absorption and Polarization Conversion at Terahertz Range

open access: yesNanoscale Research Letters, 2018
Terahertz electromagnetic (EM) wave components usually have a single function, such as they can only convert the polarization state of an incident wave or absorb the incident energy, which would be a limitation for their applications.
Lin Peng, Xing Jiang, Si-min Li
doaj   +1 more source

Towards a hardware implementation of ultra-wideband beamforming [PDF]

open access: yes, 2010
This paper discusses and analyses the hardware implementation of an ultra-wideband (UWB) beamformer for UWB Impulse Radio data transmission. We use a Complex Programmable Logic Device (CPLD) acting as the binary baseband information source.
Wolfgang Gartner   +9 more
core   +1 more source

Fully Conventional Anchor-Free Siamese Networks for Object Tracking

open access: yesIEEE Access, 2019
Siamese network have been extensively applied in the tracking field because of its huge speed advantage and great precision performance in solving the tracking problems. In this paper, we propose an efficient framework for real-time object tracking which
Guang Han   +4 more
doaj   +1 more source

Feature Fusion and Adversary Occlusion Networks for Object Detection

open access: yesIEEE Access, 2019
Current object detection techniques have difficulties in detecting small objects and a low level of accuracy in detecting occluded objects. To solve these problems, this paper proposes an object detection framework named FFAN which is based on Faster R ...
Guang Han   +4 more
doaj   +1 more source

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