Results 31 to 40 of about 31,467 (338)
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
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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
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A reconfigurable wideband and multiband antenna using dual-patch elements for compact wireless devices [PDF]
, 2011 This is the post-print version of the Article. The official published version can be accessed from the link below - Copyright @ 2012 IEEEA reconfigurable wideband and multiband C-Slot patch antenna with dual-patch elements is proposed and studied.
AbuTarboush, H.F. +13 more
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Reconfigurable Antennas and Their Applications [PDF]
Universal Journal of Electrical and Electronic Engineering, 2019 Reconfigurable antennas are capable of dynamically altering their frequency, polarization, and radiation properties in a controlled and reversible manner. They modify their geometry and behaviour to maximize the antenna performance in response to changes in their surrounding conditions.
Harish Chandra Mohanta +2 more
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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
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Reconfigurable Reflectarrays and Array Lenses for Dynamic Antenna Beam Control: A Review
, 2013 Advances in reflectarrays and array lenses with electronic beam-forming capabilities are enabling a host of new possibilities for these high-performance, low-cost antenna architectures.
Hum, Sean Victor +1 more
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PATCH ANTENNA WITH RECONFIGURABLE POLARIZATION
Progress In Electromagnetics Research C, 2009 A reconfigurable patch antenna consisting of a square patch with two cross-shaped diagonal slots is presented. The proposed design approach is based on the use of two pairs of switches in order to obtain both frequency and polarization reconfigurability.
MONTI, GIUSEPPINA +2 more
openaire +2 more sources
Cognitive Radio Transceivers: RF, Spectrum Sensing, and Learning Algorithms Review
International Journal of Antennas and Propagation, 2014 A cognitive transceiver is required to opportunistically use vacant spectrum resources licensed to primary users. Thus, it relies on a complete adaptive behavior composed of: reconfigurable radio frequency (RF) parts, enhanced spectrum sensing algorithms,
Lise Safatly +3 more
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Design of a LP, RHCP and LHCP Polarization-Reconfigurable Holographic Antenna
IEEE Access, 2019 In this paper, the feasibility of utilizing the microwave hologram to realize the high-gain radiation with polarization agility performance is investigated, and an effective method to design the polarization-reconfigurable holographic antenna is ...
Mei Li, Ming-chun Tang, Shaoqiu Xiao
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Ultrawideband Antennas: Growth and Evolution
Micromachines, 2021 Narrowband antennas fail to radiate short pulses of nano- or picosecond length over the broader band of frequencies. Therefore, Ultrawideband (UWB) technology has gained momentum over the past couple of years as it utilizes a wide range of frequencies ...
Om Prakash Kumar +4 more
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