Results 11 to 20 of about 411,124 (224)

Design considerations of MIMO antennas for mobile phones [PDF]

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   +5 more sources

Vivaldi MIMO Antennas

open access: yesWireless Personal Communications, 2023
In this work, two types of Vivaldi MIMO antenna are designed and fabricated. The first one is a two ports band-reject Vivaldi MIMO antenna. The second one is a two ports band-reject Vivaldi MIMO antenna with a dielectric lens. Measurements show that the experimental working band of both is 3 to 12 GHz with isolation between ports higher than 25 dB ...
Bazil Taha Ahmed   +1 more
openaire   +1 more source

Multiplexing Efficiency of MIMO Antennas [PDF]

open access: yesIEEE Antennas and Wireless Propagation Letters, 2011
A simple and intuitive metric of multiplexing efficiency is proposed for evaluating the performance of multiple-input-multiple-output (MIMO) antennas in the spatial multiplexing mode of operation. Apart from gaining valuable insights into the impact of antenna efficiency, efficiency imbalance, and correlation on multiplexing performance, the metric is ...
Tian, Ruiyuan   +2 more
openaire   +1 more source

Fundamental Bounds on MIMO Antennas [PDF]

open access: yesIEEE Antennas and Wireless Propagation Letters, 2018
Antenna current optimization is often used to analyze the optimal performance of antennas. Antenna performance can be quantified in e.g., minimum Q-factor and efficiency. The performance of MIMO antennas is more involved and, in general, a single parameter is not sufficient to quantify it.
Ehrenborg, Casimir, Gustafsson, Mats
openaire   +2 more sources

A Compact and Straightforward Self-Decoupled MIMO Antenna System for 5G Applications

open access: yesIEEE Access, 2020
This study investigates a compact and straightforward self-decoupled 2 × 2 multiple-input multiple-output (MIMO) antenna set and its applications for current and future 5G terminal devices.
Haiyan Piao, Yunnan Jin, Longyue Qu
doaj   +1 more source

High‐gain, high‐isolation, and wideband millimetre‐wave closely spaced multiple‐input multiple‐output antenna with metamaterial wall and metamaterial superstrate for 5G applications

open access: yesIET Microwaves, Antennas & Propagation, 2021
A method to significantly increase the gain and isolation of a wideband multiple‐input multiple‐output (MIMO) antenna using metamaterial structures is reported.
Farzad Khajeh‐Khalili   +3 more
doaj   +1 more source

Design of a Twelve-Port MIMO Antenna System for Multi-Mode 4G/5G Smartphone Applications Based on Characteristic Mode Analysis

open access: yesIEEE Access, 2020
This paper presents a twelve-port multiple-input multiple-output (MIMO) antenna system for multi-mode 4G/5G smartphone applications. Characteristic mode analysis (CMA) is used to illustrate the operation principle and optimize the geometrical structure ...
Jian Dong, Shan Wang, Jinjun Mo
doaj   +1 more source

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

Co-located and space-shared multiple-input multiple-output antenna module and its applications in 12 × 12 multiple-input multiple-output systems

open access: yesETRI Journal, 2023
In this study, we developed a co-located and space-shared multiple-input multiple-output (MIMO) antenna module with a modular design and high integration level.
Longyue Qu, Haiyan Piao, Guohui Dong
doaj   +1 more source

Two-tier channel estimation aided near-capacity MIMO transceivers relying on norm-based joint transmit and receive antenna selection [PDF]

open access: yes, 2015
We propose a norm-based joint transmit and receive antenna selection (NBJTRAS) aided near-capacity multiple-input multiple-output (MIMO) system relying on the assistance of a novel two-tier channel estimation scheme. Specifically, a rough estimate of the
Chen, Sheng   +2 more
core   +1 more source

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