Results 111 to 120 of about 2,282,353 (338)

A new blind adaptive antenna array for GNSS interference cancellation [PDF]

open access: yes, 2005
This paper introduces a new blind adaptive antenna array as a possible solution to the interference cancellation problem. This new technique is compared to three classical ones over two different sensor radiation patterns.
Renard, Alain   +4 more
core  

Effect of antenna element properties and array orientation on performance of MIMO systems [PDF]

open access: yes, 2004
This paper presents a MIMO throughput based assessment of three candidate antenna arrays, each of which was constructed from a different type of antenna element. A model of the MIMO channel resolved in orthogonal polarization planes was employed to apply
Rogers, PR   +11 more
core   +1 more source

Flexoelectricity in Photoconversion: Fundamentals, Materials, and Outlooks

open access: yesAdvanced Science, EarlyView.
Mechanical bending of a flexible cantilever induces a strain gradient in the photoactive material. The resulting flexoelectric field couples with photovoltaic and photoconductive effects, modulating charge generation, separation, and collection. A comparative analysis of oxide perovskites, halide perovskites, and two‐dimensional materials is presented,
Xiang Huang, Feng Li, Rongkun Zheng
wiley   +1 more source

Array of antenna arrays [PDF]

open access: yes, 2014
Antenna arrays are groups of antenna elements spaced in a geometrical pattern. By changing the phase excitation of each element, the array is capable of transmitting electromagnetic waves strongly in a chosen direction with little or no radiation in ...
Albannay, Mohammed Masoud
core  

Modeling of Antenna Arrays and Mutual Coupling between Array Elements using S-Parameters

open access: yes, 2018
An antenna can be modeled as a two-port network using S-parameters. However, having antenna S-parameters are not sufficient for modeling an array of antennas as that requires mutual coupling.
De Silva, Obinamuni Supun Devinda
core   +1 more source

Multiferroic‐Centric Materials and Systems Engineering for Battery Applications: An Insight Into Mechanisms, Strategies, and Characterizations

open access: yesAdvanced Science, EarlyView.
Multiferroic order parameters – polarization, magnetization, and ferroelastic strain – are positioned as dynamic design variables for batteries. Their mechanistic roles, practical tuning through fabrication and external fields, and ferroic‐resolved characterization routes are unified into a closed‐loop framework, revealing how coupled ferroic responses
Jiaqi Su   +13 more
wiley   +1 more source

Design and Test of Beamforming Networks for a Galileo Antenna Array [PDF]

open access: yes, 2006
The aim of the work is the design of a series of passive feeding networks that will steer the main beam of a Galileo antenna into different fixed directions to evaluate the performance of the array under such ...
Arango Selga, Arturo
core  

A Four-Element Linear Dielectric Resonator Antenna Array for Beamforming Applications With Compensation of Mutual Coupling

open access: yesIEEE Access, 2016
A four-element linear dielectric resonator antenna array for beamforming applications with mutual coupling compensation is proposed for long term evolution band 40 (2.3 GHz). The effect of mutual coupling on the array beamforming pattern has been studied
Jamal Nasir   +5 more
doaj   +1 more source

A Machine Vision‐Guided Microphysiological Platform With Automated Microfluidics Enables Longitudinal Biomarker Monitoring and Emulation of Translationally Relevant Exposure Scenarios

open access: yesAdvanced Science, EarlyView.
A pneumatically actuated multi‐tissue microphysiological system is integrated with AI‐based machine vision and automatic sampling and replenishment systems. The platform allows for the emulation of translationally relevant long‐term pharmacokinetic exposure scenarios for multiple weeks while enabling longitudinal monitoring of response biomarkers ...
Jibbe Keulen   +15 more
wiley   +1 more source

Effect of mutual coupling on spatial correlation for different manifold arrays

open access: yesDianxin kexue, 2018
The mechanism of MC and its impact on the received signal vector were analyzed.A closed-form expression and an approximate expression of SC for antenna arrays with different forms were derived,where the power angle spectrum of arrival signal was modeled ...
Ying YANG   +5 more
doaj   +2 more sources

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