Results 21 to 30 of about 222,814 (172)
Topological Interference Management With Reconfigurable Antennas [PDF]
IEEE Transactions on Communications, 2016 This work will be presented in part at the 2016 IEEE International Symposium on Information Theory (ISIT)
Heecheol Yang +3 more
openaire +4 more sources
Wideband reconfigurable antennas [PDF]
, 2011 The work described in this thesis concerns the combining of wideband and reconfigurable narrow band functionality into a single antenna. This concept may be useful in reducing size and to give flexibility to a wireless terminal to operate in several ...
Hamid, Mohamad Rijal
core +7 more sources
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
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
Multimode and Multiband Microstrip Antennas [PDF]
, 2007 This thesis describes original work on the broadband and multiband matching of microstrip patch antennas. Microstrip patch antennas suffer from many constraints on their performance. One major restriction is their narrow impedance bandwidth.
Abunjaileh, Alaa Ibrahim
core +7 more sources
MEMS-Reconfigurable Metamaterials and Antenna Applications
International Journal of Antennas and Propagation, 2014 This paper reviews some of our contributions to reconfigurable metamaterials, where dynamic control is enabled by microelectromechanical systems (MEMS) technology.
Tomislav Debogovic +1 more
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source