Results 21 to 30 of about 1,257 (220)

An Ultrathin 2-bit Near-Field Transmitarray Lens [PDF]

, 2017
A novel ultra-thin Near-Field 2-bit 24x24-element transmitarray lens working at X-Band is presented in this letter. The aim of this antenna is to focus in a point located in the Near-Field without using any complex feeding network.
Arboleya Arboleya, Ana, González Plaza, Enrique, Las Heras Andrés, Fernando Luis, León Fernández, Germán, Loredo Rodríguez, Susana, Rodríguez Pino, Marcos, Suárez Álvarez, Carlos Manuel   +6 more
core   +2 more sources

A High Efficiency Transmitarray Using Two-Layer Elements Etched on Compound Substrate

IEEE Access, 2022
In this paper, a novel double-layer transmitarray antenna operating in X-band with high efficiency is presented. Different from the traditional transmitarray element design, the proposed transmitarray element uses a compound substrate which is composed ...
Chao Tian, Gang Zhao, Ruo-Nan Du, Zheng Zhang, Ya-Wei Wang   +4 more
doaj   +1 more source

Electronically Reconfigurable Transmitarray at Ku Band for Microwave Applications [PDF]

, 2010
An electronically reconfigurable transmitarray device at 12 GHz is presented in this work. This paper highlights the functioning of this kind of device and thoroughly examines the proposed reconfigurable transmitarray. The architecture is discussed along
Muñoz Acevedo, Alfonso, Padilla de La Torre, Pablo, Sierra Castañer, Manuel, Sierra Castañer, Manuel, Sierra Pérez, Manuel   +4 more
core   +2 more sources

Analysis of the Transmission Performance Limits for a Multi-layer Transmitarray Unit Cell [PDF]

, 2021
This communication presents a theoretical study that establishes the performance limits for a multi-layer transmitarray unit cell. This is the first study to be applicable to unit cells in which the conducting resonators, on the different layers, are ...
Gao, Y, Kelly, JR, Qu, Z
core   +1 more source

Design of transmitarray compact antenna test range at millimetre wave band

IET Microwaves, Antennas & Propagation, 2022
In this paper, a novel compact antenna test range based on transmitarray (TA), transmitarray compact antenna test range (TACATR), is proposed. A non‐negligible parameter, central cell reference phase (CRP), is defined to harmonize the disturbance field ...
Yongheng Zhao, Peng Huo, Jianhua Wu, Zhiping Li   +3 more
doaj   +1 more source

Wideband Transmitarray Antenna Based on Two-Layer Aperture-Coupled Metasurface Unit Cell [PDF]

Journal of Electromagnetic Engineering and Science
In this paper, a transmitarray antenna is designed and fabricated based on a two-layer aperture-coupled patch unit cell. The unit cell is composed of two layers of dielectric substrate with a simple narrow rectangular aperture between the layers. Through
Masoumeh Darwish, Hamid Reza Hassani
doaj   +1 more source

A Simultaneous Beam Steering and Polarization Converting S-Band Transmitarray Antenna

IEEE Access, 2022
In this paper, a multi-functional transmitarray antenna consisting of miniaturized unit cells for S-band radar applications is proposed. The unit cell size is $0.4\lambda _{0}\,\,\times \,\,0.4\lambda _{0}$ , and it is composed of a receiving (Rx ...
Myeongha Hwang, Gyoungdeuk Kim, Jongyeong Kim, Sangkil Kim   +3 more
doaj   +1 more source

Detection of Low-Contrast Objects with a Focusing Transmitarray [PDF]

, 2017
IEEE International Conference on Microwaves, Antennas, Communications and Electronic Systems (COMCAS), 13-15 noviembre de 2017, Tel-Aviv (Israel)A Focusing Transmitarray is a quasi-periodic planar lens that is able to focus the energy of a feed at a spot
González Plaza, Enrique, León Fernández, Germán, Loredo Rodríguez, Susana, Rodríguez Pino, Marcos   +3 more
core   +1 more source

Space-fed antenna based on dielectric-only transmitarray [PDF]

, 2022
In this work, preliminary results on the design of a dielectric transmitarray (TA) antenna are presented. The unit-cell consists in two circular cylinders located on the two sides of a thin square slab, with size 0.3λ at the central frequency, realized ...
Massaccesi, A., Pirinoli, P.
core   +1 more source

A Double-Layer Highly Efficient and Wideband Transmitarray Antenna

IEEE Access, 2019
A double-layer highly efficient and wideband transmitarray antenna is presented. The transmitarray element is composed of four metal vias and two crosspatches with two stubs. The metal vias penetrate the entire substrate and arrange symmetrically.
Xiang-Jie Yi, Tao Su, Bian Wu, Jian-Zhong Chen, Lin Yang, Xi Li   +5 more
doaj   +1 more source