Results 241 to 250 of about 570,053 (282)

Microfluidically Polarization-Switchable Metasurfaced Antenna

IEEE Antennas and Wireless Propagation Letters, 2018
This letter reports a polarization-switchable metasurfaced antenna, which comprises a source antenna and a metasurface as a superstrate. The metasurface consists of a 4 × 4 microfluidic element array, and each element is designed with a rectangular loop with diagonals formed by microfluidic injection.
Aqeel Hussain Naqvi, Sungjoon Lim
openaire   +1 more source

Generic antenna design using metasurfaces

2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM), 2016
In earlier work, metasurfaces were used to redirect or focus light by tailoring the surface profile to control the phase and magnitude of the current at each of the cells comprising the metasurface. In this work, a metasurface is used to design antennas by tailoring the feed for each resonator to create optimal radiation behaviour.
Mohamed El Badawe, Omar M. Ramahi
openaire   +1 more source

Shared-aperture modulated metasurface antennas

2017 XXXIInd General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS), 2017
This paper describes the design multibeam or dual-band antennas using just a single metasurface (MTS) aperture. An example of multi-beam antenna is presented, it is based on a superposition of modulation patterns, and presents a multi-source feeding scheme. The elements of the objective surface impedance tensor are derived in closed-form, and numerical
David Gonzalez Ovejero, Gabriele Minatti, Marco Faenzi, Francesco Caminita, Enrica Martini, Stefano Maci   +5 more
openaire   +1 more source

A metasurfaced circularly polarized antenna

2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2017
An X-band metasurfaced (MS) antenna is proposed for circular polarization (CP) operation. The antenna consists of a patch antenna and a MS, which are printed on a single substrate, resulting in low profile. Results show that, with using the MS, the antenna can achieve an impedance bandwidth (IMBW) of 9.24–10.16 GHz (0.92 GHz, 9.5%) and an axial-ratio ...
Changfei Zhou, S. W. Cheung, Qinlong Li, Di Wu, Bo Wang   +4 more
openaire   +1 more source

A Wideband Circularly Polarized Antenna With Metasurface Plane for Biomedical Telemetry

IEEE Antennas and Wireless Propagation Letters
This letter presents a metasurface (MS)-based wideband wearable circularly polarized (CP) antenna to communicate with in-body devices. The antenna consists of a crossed dipole, an MS plane and a CP feeding network.
Kai Zhang, Mariella Särestöniemi, S. Myllymäki, Ping Jack Soh, Juan Chen, Sen Yan   +5 more
semanticscholar   +1 more source

Fluidically Beam-Steering Metasurfaced Antenna

2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, 2019
This paper presents a fluidically beam-steering metasurfaced antenna. The proposed antenna consists of a source antenna and a bi-layered metasurface which acts as partially reflecting surface (PRS) as a superstrate. The top-layer metasurface composed of 4×4 conductive squared ring element array on the top side of thin dielectric substrate and a 3-D ...
Aqeel Hussain Naqvi, Sungjoon Lim
openaire   +1 more source

High-Gain OAM Antenna With Low Profile Utilizing Integrated Reflective Metasurface

IEEE Antennas and Wireless Propagation Letters
Orbital angular momentum (OAM) generated by metasurface has recently drawn many attentions. However, due to the hollow phenomenon in the direction of the OAM beam far-field pattern, the gain of the OAM beam decreases, which makes the sidelobe level (SLL)
Desheng Yang, Yueyi Yuan, Qun Wu, Kuang Zhang   +3 more
semanticscholar   +1 more source

Supersymmetric Metasurface Antennas

2023 IEEE 11th Asia-Pacific Conference on Antennas and Propagation (APCAP), 2023
Ye Yu, Mina Ren, Xin Qi, Bintao Wu, Tianzheng Sun, Chao Wu, Yuguang Cheng, Hong Chen, Yong Sun   +8 more
openaire   +1 more source

Metasurface Coatings for Dynamic Antenna Systems

2024 IEEE International Symposium on Phased Array Systems and Technology (ARRAY)
Metasurfaces offer unparalleled control over electromagnetic waves, making them ideal candidates for enhancing performance of antenna systems. In this contribution, we review some of our recent advancements in metasurface-based coatings for dynamic antennas, discussing their design principles and performance characteristics.
Barbuto, Mirko, Longhi, Michela, Monti, Alessio, Vellucci, Stefano, Ramaccia, Davide, Stefanini, Luca, Toscano, Alessandro, Bilotti, Filiberto   +7 more
openaire   +2 more sources

Broadband RCS Reduction, Antenna Miniaturization, and Bandwidth Enhancement by Combining Reactive Impedance Surface and Polarization Conversion Metasurface

IEEE Transactions on Antennas and Propagation
A metasurface (MS)-based low-profile, low radar cross section (RCS), wideband, and miniaturized microstrip patch array is proposed in this communication.
Qi Zheng, Wenxuan Liu, Qi Zhao, Linghui Kong, Yuhui Ren, Xue-xia Yang   +5 more
semanticscholar   +1 more source