Results 31 to 40 of about 1,257 (220)
IET Microwaves, Antennas & Propagation, 2022 The design strategy to stabilise the phase centre (PC) of the conventional horn antenna using a shaped dielectric rod is presented for aperture efficiency improvement of space‐fed antennas.
Mohammad Omid Bagheri +2 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
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
One-Dimensional Beam Scanning Transmitarray Lens Antenna Fed by Microstrip Linear Array
IEEE Access, 2019 This paper proposed a one-dimensional beam scanning transmitarray lens antenna fed by a microstrip linear array antenna which owns a wide pattern in the plane orthogonal to the array axis and a narrow pattern in the plane that includes the array axis ...
Na Kou +3 more
doaj +1 more source
IEEE Access, 2021 An anisotropic metasurface that performs a reflectarray and transmitarray on each side is proposed. The proposed configuration comprises $15\times15$ unit cells that consist of polarization converters and a polarization filter.
Chia-Chi Chung +3 more
doaj +1 more source
Design of low-profile transmitarray antennas with wide mechanical beam steering at millimeter waves [PDF]
, 2023 Mechanical beam steering using a single Transmitarray (TA) can be a cost-effective solution for a high-gain antenna with wide-angle scanning. Elevation scanning can be achieved by a linear displacement of the feed in the focal plane parallel to the ...
Arrebola, M. +7 more
core +1 more source
Passive Planar Transmit-Array Microstrip Lens for Microwave Purpose [PDF]
, 2010 A complete transmit-array lens device at 12 GHz, for microwave purpose, is offered in this manuscript.In this document, an overview of the functioning of this kind of devices is given and the proposed transmit-array lens is thoroughly studied, with ...
Muñoz Acevedo, Alfonso +2 more
core +2 more sources
IEEE Access, 2020 This paper describes a wideband, low-profile and efficiency-improved transmitarray antenna achieved by employing over-1-bit phase-shifting elements and incorporating optimized phase compensation scheme.
Fan Wu +3 more
doaj +1 more source
A compact flat lens antenna with aperture-coupled patch elements [PDF]
, 2014 A compact 7 x 7 flat lens antenna design for Xband applications is presented in this paper. A new design with aperture-coupled E-shaped patch elements at 10 GHz is simulated and analyzed.
Adnan, Suraya Hani +5 more
core +2 more sources
Multifunctional Cascaded Metamaterials: Integrated Transmitarrays
, 2016 Control of electromagnetic waves using engineered materials is very important in a wide range of applications, therefore there is always a continuous need for new and more efficient solutions. Known natural and artificial materials and surfaces provide a
Asadchy, Viktar S. +4 more
core +1 more source