Results 11 to 20 of about 2,996 (222)
1‐Bit reconfigurable reflectarray antenna with T‐shaped parasitic structure
IET Microwaves, Antennas & PropagationIn this paper, an electronically 1‐bit reconfigurable reflectarray antenna (RRA) with wide‐angle beam‐scanning and high efficiency performance is presented for formation satellite communication applications. A 1‐bit phase distribution can be generated by
Sen Li +6 more
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Three‐dimensional metal‐only phoenix cell and its application for reflectarrays
IET Microwaves, Antennas & PropagationA 3D metal‐only waveguide‐based phoenix cell for reflectarray is presented. The proposed cell consists of two concentric square waveguides and a metallic block in the centre, which offers two operation modes. The first mode uses its cross section to tune
Zhihang An +4 more
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Advanced Electronic MaterialsOptically transparent electromagnetic devices play a crucial role in modern society, yet conventional optically transparent millimeter‐wave devices suffer from high return loss, limited phase shift, narrow bandwidth, high profile, and low optical ...
Longzhu Cai +5 more
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Unfermented Freeze-Dried Leaf Extract of Tongkat Ali (Eurycoma longifolia Jack.) Induced Cytotoxicity and Apoptosis in MDA-MB-231 and MCF-7 Breast Cancer Cell Lines [PDF]
, 2021 possible anticancer mechanism of action against breast cancer cell lines: non-hormone-dependent MDA-MB-231 and hormonedependent MCF-7. -e leaves of E.
Abdul Aziz, Zaleha +3 more
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Efficient Spectral Domain MoM for the Design of Circularly Polarized Reflectarray Antennas Made of Split Rings [PDF]
, 2019 The method of moments (MoM) in the spectral domain is used for the analysis of the scattering of a plane wave by a multilayered periodic structure containing conducting concentric split rings in the unit cell.
Encinar, José A. +2 more
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Modified Phoenix cell for microstrip reflectarray antennas [PDF]
2013 IEEE Antennas and Propagation Society International Symposium (APSURSI), 2012 This paper presents a modification on the structure of a recently proposed microstrip reflectarray cell, called Phoenix [4]. Phoenix cell was developed to operate in the X-band frequency range for a linearly polarized microstrip reflectarray antenna.
Ibrahim, Sarah, Hammad, Hany
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Radiation Analysis and Characteristics of Conformal Reflectarray Antennas
International Journal of Antennas and Propagation, 2012 This paper investigates the feasibility of designing reflectarray antennas on conformal surfaces. A generalized analysis approach is presented that can be applied to compute the radiation performance of conformal reflectarray antennas.
Payam Nayeri +2 more
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A Reflectarray Antenna Using Hexagonal Lattice With Enhanced Beam Steering Capability
IEEE Access, 2019 This paper presents a novel reflectarray antenna with enhanced beam steering capability. The reflectarray antenna is based on the hexagonal distribution of the unit cells on the antenna surface.
Orcun Kiris, Kagan Topalli, Mehmet Unlu
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Analysis and Experimental Demonstration of Reflectarray Antennas in Quasi-Regular Lattices
IEEE Open Journal of Antennas and Propagation, 2023 This paper presents investigations on reflectarray antennas using non-periodic element distributions. The study involves the analysis and design of two reflectarrays based on quasi-periodic lattices with rectangular and pentagonal profiles, whose ...
Borja Imaz-Lueje +3 more
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Electronics Letters, 1998 A novel folded reflectarray antenna is presented. This antenna combines a twist and focusing reflector concept in a single printed structure. Together with a printed grid, a low profile and high gain antenna results. A test antenna in the 20 GHz range was designed, fabricated and tested.
D. Pilz, W. Menzel
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