Results 21 to 30 of about 21,890 (197)
On the Reconfigurability of a Singly-Layered Dual-Band Reflectarray for Space Applications [PDF]
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2023 This paper presents a feasibility study of a singlylayered dual-band reflectarray for space applications. The data links should operate simultaneously at K-band downlink frequency band 17.7-20.2 GHz with left-hand circular polarization (LHCP) and at Ka ...
Roger L. Farias +2 more
doaj +1 more source
An Electronically Reconfigurable Patch Antenna Design for Polarization Diversity with Fixed Resonant Frequency [PDF]
, 2015 In this paper, an electronically polarization reconfigurable circular patch antenna with fixed resonant frequency operating at Wireless Local Area Network (WLAN) frequency band (2.4-2.48 GHz) is presented. The structure of the proposed design consists of
Gardner, P. +5 more
core +2 more sources
Analysis of RF Front-End Performance of Reconfigurable Antennas with RF Switches in the Far Field
International Journal of Antennas and Propagation, 2014 The RF front-end performances in the far-field condition of reconfigurable antennas employing two commonly used RF switching devices (PIN diodes and RF-MEMS switches) were compared.
Insu Yeom +4 more
doaj +1 more source
Recent Advances in Flexible RF MEMS
Micromachines, 2022 Microelectromechanical systems (MEMS) that are based on flexible substrates are widely used in flexible, reconfigurable radio frequency (RF) systems, such as RF MEMS switches, phase shifters, reconfigurable antennas, phased array antennas and resonators,
Yingli Shi, Zhigang Shen
doaj +1 more source
IEEE Open Journal of Antennas and Propagation, 2021 A compact pattern reconfigurable antenna with four radiation patterns is proposed for sub-GHz IoT applications. The antenna has two functional modes; Mode I has three uncorrelated patterns, while Mode II has electric and magnetic omnidirectional patterns.
Saeed A. Haydhah +4 more
doaj +1 more source
Review on Multifunctional Pattern and Polarization Reconfigurable Antennas
IEEE AccessThis paper presents a detailed review of multifunctional pattern and polarization reconfigurable antennas, highlighting their potential to enhance performance of the wireless communication systems. These adaptable antennas offer versatile functionalities,
Venkataswamy Suryapaga +1 more
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Millimeter Wave Communications with Reconfigurable Antennas
, 2018 The highly sparse nature of propagation channels and the restricted use of radio frequency (RF) chains at transceivers limit the performance of millimeter wave (mmWave) multiple-input multiple-output (MIMO) systems. Introducing reconfigurable antennas to
He, Biao, Jafarkhani, Hamid
core +1 more source
Dynamically reconfigurable directionality of plasmon-based single photon sources [PDF]
, 2010 We propose a plasmon-based reconfigurable antenna to controllably distribute emission from single quantum emitters in spatially separated channels. Our calculations show that crossed particle arrays can split the stream of photons from a single emitter ...
Chen, Yuntian +2 more
core +2 more sources
Frequency reconfigurable patch antenna for 4G LTE applications [PDF]
, 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
Pattern-Reconfigurable Water Horn Antenna
IEEE Transactions on Antennas and Propagation, 2021 A novel horn antenna is reported in this communication, which is realized by using water walls instead of traditional metallic walls. Due to its fluidity, water filling different channels can be readily controlled. Therefore, the proposed water horn antenna can operate in two states: H-plane horn state and leaky-wave state, resulting in different ...
Zhen Ren +3 more
openaire +2 more sources