Results 21 to 30 of about 17,837 (64)
SATCOM Retrodirective Array [PDF]
, 2016 We present an in depth look at the challenges involved in using analogue retrodirective arrays for satellite communications. The main technical issues surrounding the development of a retrodirective (self-steering) Satellite Communications (SATCOM ...
van der Vorst, Maarten +2 more
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Dynamic-Metasurface-Based Cavity Structures for Enhanced Absorption and Phase Modulation
, 2018 Metasurface-based optical cavity structures consist of a metallic metasurface realized on top of a dielectric slab backed with a metal plane. Such structures have been employed in the design of optical devices such as flat lenses, wave plates, and ...
Jihyun Hwang (6095045) +5 more
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Binary THz modulator based on silicon Schottky-metasurface
, 2022 We propose a metasurface THz modulator based on split-ring resonators (SRRs) formed by four interconnected horizontal Si–Au Schottky diodes. The equivalent junction capacitance of each SRR in the proposed modulator is much smaller than that of the ...
Mohammad Neshat (21286199) +2 more
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Retrodirective Radar for Small Projectile Detection
, 2007 Retrodirective systems are of growing interest because of their unique functionality and relative simplicity compared to phased-array and synthetic-aperture approaches.
Zimmerman, J. D. +3 more
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Metasurface-Enabled On-Chip Manipulation of Higher-Order Poincaré Sphere Beams
, 2023 An integrated way to generate and manipulate higher-order Poincaré sphere beams (HOPBs) is a sought-after goal in photonic integrated circuits for high-capacity communication systems.
Jitao Ji (8284164) +7 more
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Investigations of Retrodirective Array Transponders.
, 2003 Retrodirective arrays, when illuminated by an interrogator signal, transmit a signal back towards the interrogator in the same direction as the incoming signal, without any prior knowledge of the source direction.
Shah, Rachana
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Demonstration of Digital Retrodirective Method for Solar Power Satellite
, 2021 This work presents digital retrodirective method to do microwave power transfer (MPT) for solar power satellite (SPS). Due to space environment, there is concern of antenna deformation, which will affect beam forming.
Mudassir Raza, Koji Tanaka
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Metasurface-Enabled On-Chip Multiplexed Diffractive Neural Networks in the Visible
, 2021 Replacing electrons with photons is a compelling route towards light-speed, highly parallel, and low-power artificial intelligence computing. Recently, all-optical diffractive neural deep neural networks have been demonstrated.
Yueqiang Hu (8293497) +6 more
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Metasurface-based planar microlenses for SPAD pixels
In this paper we present two design generations of metasurface-based planar microlenses implemented on Front-Side Illumination SPAD pixels. This kind of microlens is an alternative to conventional reflow microlens.
Jérôme Vaillant (18237763) +7 more
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, 2023 Conventional approaches for the identification of liquid chemicals are bulky and harmful to the environment, detect a limited number of chemical species, produce high false alarm rates, or rely on complex/expensive spectrometers.
Jin-Soo Kim (7954) +4 more
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