Results 21 to 30 of about 53,947 (297)

Overview of 5G terminal antenna structure design

open access: yesDianzi Jishu Yingyong, 2021
This article mainly introduces the current status of 5G antennas, and shows several mainstream smart terminal antenna design methods in the past decade. Based on MIMO antenna, frequency resettable antenna and slot antenna, their working modes, principles
Zhao Zhangyuan, Zhu Canyan
doaj   +1 more source

Adaptive antennas at the mobile and base stations in an OFDM/TDMA system [PDF]

open access: yes, 2001
In recent years, several smart antenna systems have been proposed and demonstrated at the base station (BS) of wire-less communications systems, and these have shown that significant system performance improvement is possible.
Cheng, RSK, Wong, KK
core   +1 more source

On Capacity and Delay of Multi-channel Wireless Networks with Infrastructure Support [PDF]

open access: yes, 2016
In this paper, we propose a novel multi-channel network with infrastructure support, called an MC-IS network, which has not been studied in the literature. To the best of our knowledge, we are the first to study such an MC-IS network.
Dai, Hong-Ning   +2 more
core   +3 more sources

Smart Antennas in aerospace applications [PDF]

open access: yes2010 URSI International Symposium on Electromagnetic Theory, 2010
The interest in Smart Antennas for aerospace applications is growing. This paper describes smart antennas which can be used on aircraft. Two aerospace applications are discussed in more detail: a phased array antenna with optical beam forming and a large vibrating phased array antenna with electronic compensation techniques.
Verpoorte, Jaco   +3 more
openaire   +3 more sources

Understanding Link Dynamics in Wireless Sensor Networks with Dynamically Steerable Directional Antennas [PDF]

open access: yes, 2013
. By radiating the power in the direction of choice, electronicallyswitched directional (ESD) antennas can reduce network contention and avoid packet loss.
C. Noda   +9 more
core   +2 more sources

2D Direction of Arrival Estimation Using Uniform Circular Arrays With Radiation Pattern Reconfigurable Antennas

open access: yesIEEE Access, 2022
This paper focuses on direction of arrival (DoA) estimation using adaptive arrays that consist of radiation pattern reconfigurable antenna (RPRA) elements for 2D direction finding (i.e., azimuth and elevation DoA estimation).
Brad R. Jackson
doaj   +1 more source

Adjustable transmission power in wireless Ad Hoc networks with smart antennas [PDF]

open access: yes, 2008
In this paper, we present a model to analyze the performance of wireless ad hoc networks with smart antennas, i.e. directional antennas with adjustable transmission power.
Huang, F, Leung, KC, Li, VOK
core   +1 more source

Investigation on material variants and fabrication methods for microstrip textile antennas: A review based on conventional and novel concepts of weaving, knitting and embroidery

open access: yesCogent Engineering, 2022
Wearable electronics sector is a fast-growing industry due to the rapid progress gained by developing textile-based conductive materials and conductive yarns.
Rameesh Lakshan Bulathsinghala
doaj   +1 more source

A State-of-the-Art Review on 4D Printed Antennas and Other Adaptable Designs

open access: yesIEEE Access
This article offers a thorough review of the current state-of-the-art in four-dimensional (4D) printed antennas and possible adaptable designs. It provides a succinct examination of various categories of materials used in three-dimensional (3D) and 4D ...
Saul S. Carvalho   +2 more
doaj   +1 more source

Designing Smart Antennas Using Machine Learning Algorithms

open access: yesJournal of Telecommunications and Information Technology, 2023
Smart antenna technologies improve spectral efficiency, security, energy efficiency, and overall service quality in cellular networks by utilizing signal processing algorithms that provide radiation beams to users while producing nulls for interferers ...
Barsa Samantaray   +2 more
doaj   +1 more source

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