Results 21 to 30 of about 40,531 (305)

Frequency reconfigurable patch antenna for 4G LTE applications [PDF]

open access: yes, 2018
A compact printed multi-band frequency reconfigurable patch antenna for 4G LTE applications is presented in this paper (50 x 60 x 1.6 mm3). The antenna consists of W-shaped and Inverted-U shaped patch lines connected in a Tree-shape on the front side of ...
Abbasi, Qammer H.   +4 more
core   +1 more source

Study of the Radiation Hardness Performance of PiN diodes for the ATLAS Pixel Detector at the SLHC upgrade [PDF]

open access: yes, 2009
We study the radiation tolerance of the silicon and GaAs PiN diodes that will be the part of the readout system of the upgraded ATLAS pixel detector. The components were irradiated by 200 MeV protons up to total accumulated dose 1.2×1015 p/cm2 and by 24 ...
Abi, B, Rizatdinova, F
core   +1 more source

Design of a Multifunctional Reconfigurable Metasurface for Polarization and Propagation Manipulation

open access: yesIEEE Access, 2019
In this paper, a multifunctional reconfigurable polarization conversion metasurface (MRPCM) is designed for controlling both the propagation and the polarization of electromagnetic wave.
You Li, Yi Wang, Qunsheng Cao
doaj   +1 more source

Low multiplication noise thin Al0.6Ga0.4As avalanche photodiodes [PDF]

open access: yes, 2001
Avalanche multiplication and excess noise were measured on a series of Al0.6Ga0.4As p+in+ and n+ip+ diodes, with avalanche region thickness, w ranging from 0.026 μm to 0.85 μm.
David, J.P.R.   +5 more
core   +1 more source

A single-layer tuneable microwave absorber using an active FSS [PDF]

open access: yes, 2004
An experimental single-layer active microwave absorber in described. The absorber is a planar structure based upon the topology of a Salisbury screen, but in which the conventional resistive layer is replaced by an active frequency selective surface (FSS)
Chambers, B., Tennant, A.
core   +1 more source

Voltage Controlled Intertwined Spiral Arrays for Reconfigurable Metasurfaces

open access: yesInternational Journal of Antennas and Propagation, 2014
Reconfigurable bistate metasurfaces composed of interwoven spiral arrays with embedded pin diodes are proposed for single and dual polarisation operation.
A. Vallecchi   +2 more
doaj   +1 more source

A reconfigurable wideband and multiband antenna using dual-patch elements for compact wireless devices [PDF]

open access: yes, 2011
This is the post-print version of the Article. The official published version can be accessed from the link below - Copyright @ 2012 IEEEA reconfigurable wideband and multiband C-Slot patch antenna with dual-patch elements is proposed and studied.
AbuTarboush, H.F.   +13 more
core   +2 more sources

A Frequency Reconfigurable Compact Planar Inverted-F Antenna for Portable Devices

open access: yesInternational Journal of Antennas and Propagation, 2022
In this paper, a low-profile, compact size, inexpensive, and easily integrable frequency reconfigurable antenna system is proposed. The proposed antenna consists of an inverted-F shape antenna, capacitors, and switching PIN diodes.
Adnan Ghaffar   +7 more
doaj   +1 more source

Compact Frontend-Electronics and Bidirectional 3.3 Gbps Optical Datalink for Fast Proportional Chamber Readout [PDF]

open access: yes, 2001
The 9600 channels of the multi-wire proportional chamber of the H1 experiment at HERA have to be read out within 96 ns and made available to the trigger system.
B Meier   +20 more
core   +2 more sources

Design of a PIN Diode-Based Reconfigurable Metasurface Antenna for Beam Switching Applications

open access: yesInternational Journal of Antennas and Propagation, 2019
In this paper, we propose a reconfigurable metasurface antenna for beam switching applications. The reconfigurable metasurface is formed by uniformly distributed double-split square rings loaded with positive-intrinsic-negative (PIN) diodes for dual ...
Sarawuth Chaimool   +4 more
doaj   +1 more source

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