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Showing 1 to 10 of 10 for “"Reflectarray Antenna"”.
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Broadband Approaches And Beam-Scanning Techniques For Reflectarray Antenna
<p>Reflectarray antennas combine the numerous advantages of reflector antennas and phased array antennas and create a hybrid high-gain antenna with a low-profile, low-mass, easy-fabrication, and diversified radiation performance. However, it still has some inherent drawbacks, such as limited …
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Dynamic tunability enhancement of reflectarray antenna using non-homogeneous dielectric materials
The conventional antenna systems require the mechanical movement of beam scanning antenna to meet the demands of emerging field of communications. To overcome the flaw of the mechanical movement an electronically tunable reflectarray antenna based on non-homogeneous properties of substrate …
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Design of reflectarray antenna integrated with FSS textured configurations for wireless communication applications
Modern communication systems require intelligent antenna arrays to achieve increased phase range for the performance improvement. Moreover the design requirements of spacecraft antennas for satellite communications and telecommunication missions require multifunction antennas to prevent the …
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Reflectarray Antenna based FMCW Radar System Development: High Isolation Radar Antenna Design and Feasibility of Affordable Switched-Beam for the UAV Detection
… the low power and high gain requirements. The reflectarray antenna technique was chosen for this purpose due to its lightweight, foldable and high gain boosting capability. This study first introduced a conventional centered reflectarray antenna using a numerical modeling technique based on …
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Design optimization of broadband rape-based reflectary antena elements for x-band applications
… analysis, design and optimization of broadband reflectarray antenna elements embedded on organic substrate materials. It addresses the key limitations of microstrip reflectarray antenna technology i.e., narrow bandwidth and high loss performance. It presents a novel dual resonance element with …
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Towards High-Performance Reflectarray Antennas: Phase Sensitivity Reduction for Wide Bandwidth
Reflectarray antennas are gaining popularity in satellite and communication systems due to their high gain and lightweight design. However, their limited bandwidth poses a significant challenge because phase behavior varies across different frequencies. This thesis aims to address this limitation …
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Development of switchable planar reflectors for beam shaping realization
… configurations for an efficient reconfigurable reflectarray antenna design. PIN diodes were incorporated with single and multiple slot embedded patch element configurations for the design of beam switchable planar reflectors. Moreover unit cells based on liquid crystal substrates were also …
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Development of Efficient Techniques for the Analysis and Design of Antennas in Dual-Reflectarray Configuration
… to the analysis and design of printed reflectarray antennas. The main part of the work is focused on the analysis of dual offset antennas comprising two reflectarray surfaces, one of them acts as sub-reflector and the second one acts as mainreflector. These configurations introduce …
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Advanced Design Methodologies and Novel Applications of Reflectarray Antennas
Reflectarray antennas combine the numerous advantages of printed antenna arrays and reflector antennas and create a hybrid high-gain antenna with a low-profile, low-mass, and diversified radiation performance. Reflectarrays are now emerging as the new generation of high-gain antennas for …
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Demonstrating Reflectarray Behavior At Infrared
Reflectarrays are traditionally passive, planar microstrip antenna devices designed for reflected phase manipulation at each individual antenna element making up the array. By varying the phase response across the surface with the antenna elements, reflectarrays allows a planar surface to exhibit …