Results 101 to 110 of about 136,904 (200)

Design Tools for Small Implantable antennas [PDF]

open access: yes
Implantable applications have been increasing in number in an exponential manner since the turn of the millennium. This is largely due to the increasing availability of ultra low power consumption electronics, enabling the emergence of healthcare ...
Skrivervik, Anja K.   +3 more
core   +1 more source

CAD of Stacked Patch Antennas Through Multipurpose Admittance Matrices From FEM and Neural Networks

open access: yes, 2008
In this work, a novel computer-aided design methodology for probe-fed, cavity-backed, stacked microstrip patch antennas is proposed. The methodology incorporates the rigor of a numerical technique, such as finite element methods, which, in turn, makes ...
Córcoles Ortega, Juan   +2 more
core   +1 more source

Design considerations of MIMO antennas for mobile phones

open access: yes, 2008
YesThe paper presents a new modeling and design concept of antennas using polar- ization diversity of 2 £ 2 and 3 £ 3 Multiple Input Multiple Outputs (MIMO) system that is proposed for future mobile handsets.
Abd-Alhameed, Raed   +2 more
core  

Reconfigurable wideband patch antenna for cognitive radio

open access: yes, 2009
Cognitive radio communication is envisaged to be a new paradigm of methodologies for enhancing the performance of radio communication systems through the efficient utilization of radio spectrum.
AbuTarboush, HF   +14 more
core   +1 more source

Reconfigurable intelligent surface enabled programmable antenna chamber: Concept and preliminary experiments

open access: yesElectronics Letters
Antenna chambers are RF‐shielded enclosures which are required for antenna and radio performance measurements. Typically, anechoic chambers (ACs) are used for measuring directional metrics (e.g.
Yifa Li   +5 more
doaj   +1 more source

Impulse TDR and its Application to Characterisation of Antennas

open access: yes, 2011
Passive microwave systems are traditionally characterised in the frequency-domain with a vector network analyser (VNA). The measurement of antennas typically takes place in an anechoic chamber where the interference from spurious reflections and outside ...
McCabe, Steven Owen
core  

Performance of multiple-input multiple-output wireless communications systems using distributed antennas

open access: yes, 2005
In this contribution we propose and investigate a multiple-input multiple-output (MIMO) wireless communications system, where multiple receive antennas are distributed in the area covered by a cellular cell and connected with the base-station (BS).
Yang, Lie-Liang, Fang, Wei, Chen, X.-C.
core  

An ohmic RF MEMS switch for reconfigurable microstrip array antennas built on PCB

open access: yes, 2008
This paper presents the analysis, design and simulation of an ohmic RF MEMS switch specified for reconfigurable microstrip array antennas built on PCB via an integrated monolithic technology.
Mallios, N   +6 more
core  

Optical Antennas [PDF]

open access: yesInternational Journal of Optics, 2012
N. Bonod   +3 more
openaire   +2 more sources

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