3-D-printed comb mushroom-like dielectric lens for stable gain enhancement of printed log-periodic dipole array

YX Zhang, YC Jiao, SB Liu - IEEE Antennas and Wireless …, 2018 - ieeexplore.ieee.org
A three-dimensional (3-D)-printed comb mushroomlike dielectric lens (DL) for stable gain
enhancement of the antipodal printed log-periodic dipole array (PLPDA) antenna is …

Bifocal Fresnel lens based on the polarization-sensitive metasurface

H Markovich, D Filonov, I Shishkin… - IEEE transactions on …, 2018 - ieeexplore.ieee.org
Thin structured surfaces allow flexible control over the propagation of electromagnetic
waves. Focusing and polarization state analysis are among functions, required for effective …

Multiobjective optimization of bespoke gradient-index lenses: A powerful tool for overcoming the limitations of transformation optics

J Xu, EB Whiting, SD Campbell, PL Werner… - Physical Review …, 2022 - APS
Gradient-index (GRIN) lenses have paved the way for electromagnetic wave tailoring due to
their spatially varying permittivities, which enable continuous manipulation of the wave as it …

Orbital angular momentum generation method based on transformation electromagnetics

R Feng, J Yi, SN Burokur, L Kang, H Zhang… - Optics express, 2018 - opg.optica.org
Orbital angular momentum (OAM) vortex waves generated by conventional spiral phase
plates and metasurfaces have been widely discussed. In this work, we propose an …

Dielectric slab superstrate electrically small antennas with high gain and wide band

YH Yu, ZY Zong, W Wu, DG Fang - IEEE Antennas and …, 2020 - ieeexplore.ieee.org
The gain enhancement using superstrate has been widely investigated. Different from the
existing research work, this letter focuses on the study of dielectric slab superstrate (DSS) …

3D printed dielectric lens for the gain enhancement of a broadband antenna

MS Anwar, H Abufanas… - International Journal of RF …, 2020 - Wiley Online Library
A novel 3D printed dielectric lens to enhance antenna gain parameters is presented. The
lens is fabricated using a fused deposition method (FDM) which is a cost‐effective and an …

Gain enhancement of millimeter wave antenna by ultra-thin radial phase gradient metasurface for 5G applications

P Das, AK Singh - IETE Journal of Research, 2024 - Taylor & Francis
In this article, gain augmentation of a microstrip antenna (MSA) operating at 28 GHz has
been enunciated in a cost-effective manner using a phase-graded index lens. Different …

Naked eye direction of arrival estimation with a Fresnel lens

D Vovchuk, M Khobzei, D Filonov, P Ginzburg - Scientific Reports, 2022 - nature.com
Direction of arrival (DoA) estimation is of primary importance in a broad range of wireless
applications, where electromagnetic waves play a role. While a vast majority of existing …

[HTML][HTML] Low-profile dielectric grooved GRIN lens for broadband millimeter-wave applications

A Dudek, S Gruszczynski, K Wincza - AEU-International Journal of …, 2024 - Elsevier
Microwave lenses are utilized at millimeter waves to ensure high-gain and narrow-
beamwidth radiation patterns. This paper proposes full-dielectric grooved graded-index …

Antenna gain enhancement techniques

SK Koul, S Swapna, GS Karthikeya - Antenna Systems for modern wireless …, 2024 - Springer
This chapter discusses various methods to enhance antenna gain, to extend signal reach,
and strengthen communication in WLANs. We begin by establishing the significance of high …