Efficient high NA flat micro-lenses realized using high contrast transmitarrays [PDF]
, 2015 We present design, fabrication, and characterization results of high numerical aperture (NA) micro-lenses based on a high contrast transmitarray platform.
Arbabi, Amir +4 more
core +1 more source
Digitally Reconfigurable Transmitarray With Beam-Steering and Polarization Switching Capabilities
IEEE Access, 2021 In this paper, a novel digitally reconfigurable unit-cell and $4\times 4$ transmitarray operating at X-band is proposed that allows the implementation of beamforming and polarization conversion operations in a programmable way.
Biswarup Rana, In-Gon Lee, Ic-Pyo Hong
doaj +1 more source
Nano-Dielectric Resonator Antenna Reflectarray/Transmittarray for Terahertz Applications
Advanced Electromagnetics, 2015 Nanoantennas have introduced wide bandwidth for fast data communications. The material properties of good conducting metals introduce plasmonic behavior at Terahertz frequencies.
H. A. Malhat +3 more
doaj +1 more source
Multichannel full-space coding metasurface with linearly-circularly-polarized wavefront manipulation. [PDF]
NanophotonicsAbstract Achieving independent multitasked wavefront control by using an ultrathin plate is a challenge to increase information capacity in integration optics and radar applications. Transmission‐reflection‐integrated metasurface provides an efficient recipe primarily for multifunctional meta‐device, however it is challenging to synergize both linear ...
Luo H +8 more
europepmc +2 more sources
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 +4 more
core +2 more sources
A Fast Approach to Near-Field Synthesis of Transmitarrays [PDF]
, 2021 We present an efficient approach to near-field synthesis of transmitarray antennas in which a planar aperture model is adopted both for the transmitarray and the field generated by it on a near plane.
González Plaza, Enrique +2 more
core +1 more source
Double-Layer Ku/K Dual-Band Orthogonally Polarized High-Efficiency Transmitarray Antenna
IEEE Access, 2021 This paper presents a double-layer, dual-band, orthogonally polarized, highly efficient transmitarray antenna (TA) operated in the Ku/K band (14 GHz/20 GHz) for millimeter wave (MMW) wireless communication systems (WCS).
MingBo Cai +4 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 +3 more
core +1 more source
Wideband Transmitarray Antenna Based on Two-Layer Aperture-Coupled Metasurface Unit Cell [PDF]
Journal of Electromagnetic Engineering and ScienceIn 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
Advanced Electromagnetics, 2015 The radiation characteristics of the dielectric resonator antennas (DRA) is enhanced using different types of solid and discrete dielectric lenses. One of these approaches is by loading the DRA with planar superstrate, spherical lens, or by discrete lens
H. A. E. Malhat +3 more
doaj +1 more source