Results 91 to 100 of about 1,317 (206)

Fast power pattern synthesis of conformal reflectarrays

open access: yes, 2008
The aim of the paper is to propose a fast phase only synthesis (POS) approach to the power pattern synthesis of conformal, shaped-beam reflectarrays, based on FFTs. First, the synthesis approach is described, then the approximation strategy exploited for
LISENO, ANGELO   +7 more
core   +1 more source

DESIGN BROADBAND REFLECTARRAY USING E-SHAPED SLOT CIRCULAR MICROSTRIP ANTENNA

open access: yesDiyala Journal of Engineering Sciences, 2015
In this work, a circular E-shaped slot microstrip patch element is investigated to design a reflectarray. The E-shaped slot dimensions are varied to study, reflection properties of the patch antenna.
Abdulkareem S. Abdullah
doaj  

Bifocal Single Reflectarrays with Application to Multibeam Satellite Antennas

open access: yes
In the last decades, reflectarrays have emerged as a new generation of high-gain antennas, combining many favorable features of both reflectors and arrays, as well as offering an alternative design with low-profile and low-mass features.
Pérez-Quintana, Dayan   +5 more
core   +1 more source

Advanced multibeam antenna configurations based on reflectarrays for communication satellites in K- and Ka-Bands

open access: yes, 2019
This paper presents some recent developments in multiple beam antennas (MBAs) based on reflectarrays for communication satellites in K-and Ka-bands. The existing high through put satellites commonly employ four reflector antennas to provide cellular ...
Martínez de Rioja del Nido, Eduardo María   +7 more
core   +1 more source

Ultra-wideband and Multiband Reflectarrays for Intelligent Multi-functional Platforms [PDF]

open access: yes, 2019
This paper includes two parts. In the first part, a review of techniques for designing wideband or multiband reflectarrays is presented. In the second part, two case studies including the designs of one ultra-wideband (UWB) reflectarray and one multi ...
Luo, Qi   +4 more
core  

Efficient Analysis of Reflectarrays through the Use of Characteristic Modes

open access: yes, 2015
The aim of this study is to establish an efficient analysis method for reflectarrays with varying element sizes. The efficiency of the method relies on utilization of characteristic modes as macro basis functions, and thereby reducing the MoM matrix ...
Alatan, Lale   +2 more
core   +1 more source

Investigations on Liquid Crystal Reconfigurable Unit Cells for mm-Wave Reflectarrays [PDF]

open access: yes, 2008
In order to meet the increasing need for cost effective antennas with pattern reconfiguration capabilities (beam steering, beam shaping), a novel approach has been investigated in this thesis.
Marin, Radu
core  

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