Results 21 to 30 of about 10,565,311 (162)
High Gain Periodic 2-D Leaky-Wave Antenna With Backward Radiation for Millimeter-Wave Band
IEEE Open Journal of Antennas and Propagation, 2021 A two-dimensional (2D) periodic leaky-wave antenna (LWA) is proposed in this article. Using dielectric-filled wedge-like waveguide as medium for wave propagation, the quasi-TEM wave inside the guide is leaked through periodic rings of narrow slots ...
Abdullah Attar, Abdel Razik Sebak
doaj +1 more source
On the effect of the SLL-floor on the directivity of thinned arrays [PDF]
AIP AdvancesThis work explores the fundamental properties of the radiation pattern of an irregular array with a specified side lobe level (SLL) floor. We develop an analytical formulation that provides an accurate expression for the directivity and highlights an ...
Christos Monochristou, Mauro Ettorre
doaj +1 more source
A hybrid antenna array design for 3-d direction of arrival estimation. [PDF]
PLoS ONE, 2015 A 3-D beam scanning antenna array design is proposed that gives a whole 3-D spherical coverage and also suitable for various radar and body-worn devices in the Body Area Networks applications.
Najam-Us Saqib, Imdad Khan
doaj +1 more source
IEEE Access, 2020 In this article, a novel antenna subset selection technique for enhancing the Physical Layer Randomness (PLR) of Antenna Subset Modulation (ASM) has been proposed.
Omar Ansari +4 more
doaj +1 more source
Sensors, 2023 In this paper, two sector beam scanning approaches (BSAs) based on element position perturbations (EPPs) in the azimuth plane are introduced. In EPP-BSA, the elements’ excitations are kept constant and the elements’ positions in the direction normal to ...
Safaa I. Abd Elrahman +3 more
doaj +1 more source
Wide Band Periodic 2D Leaky-Wave Antenna for Millimeter-Wave Application
IEEE Access, 2023 A wideband periodic leaky-wave antenna (LWA) is proposed in this paper. By using lossy dielectric material inside the wedge-like guide as medium for wave propagation, a leaky mode is excited and results in widening the bandwidth.
Abdullah Attar +2 more
doaj +1 more source
Feasibility study of antenna synthesis using hyper beamforming
Heliyon, 2019 Wireless communication requires an effective antenna synthesis that characterizes adequate infrastructures to provide the broader bandwidth and reduced interference.
Gebrehiwet Gebrekrstos Lema +1 more
doaj +1 more source
Design and Analysis of Thinned Array Pattern Reconfigurable Antenna to Enlarge the Scanning Range
International Journal of Antennas and Propagation, 2016 A novel thinned array with symmetric distribution along the array center is proposed in this paper. The proposed symmetric thinned array is based on the theory of unequally spaced array and the amplitude of each element in the array can be changed by ...
Zhangjing Wang +3 more
doaj +1 more source
IEEE Access, 2022 Recent work has proposed that millimeter-wave beam steering antennas consisting of lens antenna subarrays (LASs) reduce hardware complexity. This manuscript extends the concept to 2D beam steering with extended hemispherical dielectric lenses (EHDLs). To
Kiran A. Shila, Gokhan Mumcu
doaj +1 more source
A new inhomogeneous partially reflecting surface for Fabry‐Perot antenna to reduce side lobe level
, 2020 International audienceIn this article, an extension of the spatial filter method to study Fabry-Perot antennas with homogeneous or inhomogeneous partially reflecting surface (PRS) of finite size is proposed.
Oussaid, Rachid +2 more
core +1 more source