Results 161 to 170 of about 1,257 (220)

Ultra-Wideband High-Gain Transmitarray Antenna : For practical applications of transmitarray antennas

2020 IEEE Asia-Pacific Microwave Conference (APMC), 2020
In this paper, demonstration of a dual-polarized ultra-wideband transmitarray antenna with Vivaldi elements is presented. The aperture features a physical area of 1.1×0.35m2, providing a peak gain of 26 ~ 36dBi within a frequency band from 5 to 16GHz. The experimental results show that the transmitarray antenna has stable radiation performances within ...
Lin Xiao   +4 more
openaire   +1 more source

Triple-layer transmitarray antenna designs

2014 United States National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM), 2014
The goal of this work is to reduce the complexity and cost of transmitarray antennas by decreasing the number of layers. Three different methods are used to design triple-layer transmitarray antennas, while maintaining the overall performance with full transmission coefficient phase range of 360° and avoiding the reduction of the element transmission ...
Ahmed H. Abdelrahman   +2 more
openaire   +1 more source

Low-Profile Slot Transmitarray Antenna

IEEE Transactions on Antennas and Propagation, 2015
A novel ultrathin slot-based transmitarray antenna is presented. The related unit cell consists of two thin dielectric layers placed on top of each other, with annular ring slots placed on the outer layers and a PBG element placed on the common interface.
Bahman Rahmati, Hamid R. Hassani
openaire   +1 more source

Beam Steering Plasma Reflectarray/Transmitarray Antennas

Plasmonics, 2013
The aim of this paper is to design and analyze plasma reflectarray/transmitarray antennas which include investigation of performance parameters for these antennas in free space. The unit cell element for both arrays consists of a cubic glass box with fixed dimensions filled by argon gas.
S. H. Zainud-Deen   +3 more
openaire   +2 more sources

High-Efficient Wideband Transmitarray Antenna

IEEE Antennas and Wireless Propagation Letters, 2018
A new structure for transmitarray antennas is presented. The proposed semiplanar transmitarray keeps certain geometrical curvature, that the required transmission phase range is reduced significantly from 360°, causing an increase in bandwidth and efficiency.
Seyed Hashem Ramazannia Tuloti   +2 more
openaire   +1 more source

A millimeter-wave transmitarray antenna

2016 17th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM), 2016
A broadband and high gain transmitarray (TA) antenna, operating at 60 GHz, is presented. As a constituent part of the TA, a multi-layer unit cell (UC) is optimally designed to realize a linear transmission phase response with a continuous variation range of at least 270 ° and a transmission loss less than −3 dB across the desired frequency range from ...
Elham Erfani   +3 more
openaire   +1 more source

A Novel Folded Transmitarray Antenna

2019 International Conference on Microwave and Millimeter Wave Technology (ICMMT), 2019
In this paper, a novel folded transmitarray antenna is presented. The proposed transmitarray antenna consists of a transmition array with carrying polarized grid, a feed antenna and a polarization rotation reflection surface (PRRS). First, a unit cell consisting of three traditional double-ring phase shift structures and one polarizer grid etched on ...
Guan-Tao Chen   +2 more
openaire   +1 more source

Transmitarray based Metasurface Lens Antenna

2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, 2019
A transmitarray metasurface design is proposed to function as an integrated lens antenna within the frequency range of 11.6 GHz to 13.25 GHz. A finite periodic array of three-layer metallo-dielectric discrete unit cells is used to form the transmitarray lens.
Asif Ahmed   +2 more
openaire   +1 more source

High-Gain Low-Sidelobe Transmitarray Antennas

2020 Cross Strait Radio Science & Wireless Technology Conference (CSRSWTC), 2020
This paper proposes high-gain low sidelobe Trans-mitarray antenna (TA) designs. The metasurface elements with 3-bit amplitude and phase control are first proposed. Two TAs are then designed based on the methods of phase compensation only and the control of both phase and amplitude respectively.
Yufang Wang, Yuehe Ge, Zhizhang Chen
openaire   +1 more source

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