Results 41 to 50 of about 17,837 (64)

Retrodirective array based radar (Invited)

, 2010
This paper will demonstrate recent work at Queens University of Belfast as well as review the small body of literature on the new topic of Retrodirective Radar.
Fusco, V.; id_orcid, Buchanan, N. B.
core   +1 more source

Metasurface- and PCSEL-Based Structured Light for Monocular Depth Perception and Facial Recognition

The novel depth-sensing system presented here revolutionizes structured light (SL) technology by employing metasurfaces and photonic crystal surface-emitting lasers (PCSELs) for efficient facial recognition in monocular depth-sensing. Unlike conventional
Wen-Cheng Hsu (16400033), Yao-Wei Huang (426136), Chia-Hsun Chang (11456960), Yu-Heng Hong (6634811), Hao-Chung Kuo (1403419)   +4 more
core   +2 more sources

An active retrodirective antenna array

, 2011
Retrodirective antenna arrays utilize an array of antennas to redirect a signal back in the direction it originated from without use of digital circuitry, microcontrollers, or sophisticated signal processing algorithms.
Fleischmann, Amy
core  

Retrodirective antenna array

, 2012
In the first part of this thesis a basic theory of retrodirective antenna arrays and their particular parts – antennas and mixers is summarized. Further, there is a basic summary of possibilities for an usage of retrodirective antenna arrays for an ...
Šindler, Pavel
core  

A Tri‐Functional Active Reconfigurable Retrodirective Array

With the continuous expansion of electromagnetic application scenarios for retrodirective systems, reconfigurable retrodirective arrays featuring multiple operating modes and flexible control capabilities have gradually emerged as an important research ...
Lanjun Sun, Jin‐Dong Zhang, Huangyan Li, Xiang Wang, Boyu Sima   +4 more
core   +1 more source

Generalized spatial modulation for underwater backscatter communication using acoustic metasurfaces. [PDF]

Sci Rep
Raghavendra AH, Gurugopinath S, Muhaidat S.   +2 more
europepmc   +1 more source

5G-enabled, battery-less smart skins for self-monitoring megastructures and digital twin applications. [PDF]

Sci Rep
Lynch C, Adeyeye A, Abbara EM, Umar A, Alhendi M, Minnella C, Iannotti J, Stoffel N, Poliks M, Tentzeris MM.   +9 more
europepmc   +1 more source

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Two-Dimensional Efficient Broadband Retrodirective Metasurface

IEEE Transactions on Antennas and Propagation, 2020
This communication presents a novel 2-D broadband retrodirective metasurface. First, a phase-gradient metasurface composed of two crossed arrays of striplines mounted on both sides of a substrate, an insulation space, and a ground plane is implemented to achieve 2-D retrodirective characteristics at a specific angle by precisely tuning the dimensions ...
Chang-Hyun Lee, Jeong-Hae Lee
exaly   +2 more sources

Low‐profile TM incident retrodirective metasurface based on generalized sheet transition conditions and Babinet's principle

Microwave and Optical Technology Letters, 2020
AbstractThis article presents a method to design low‐profile TM incident retrodirective metasurface (RMS). The equivalent circuit model based on generalized sheet transition conditions (GSTCs) and modified Babinet's principle are used to design the unit cell of RMS for full reflection phase coverage (FRPC).
Jae-Gon Lee, Jeong-Hae Lee
exaly   +2 more sources

Eleven Channel Retrodirective Metasurface Based on the Combination of the Generalized Phase Law and Impedance Modulation

, 2019
In this paper the design of a retrodirective metasurface for multiple incident angles is proposed. The design methodology is based on the combination of the generalized phase law of reflection and the implementation of the phase impedance modulation for non reciprocal metasurfaces.
Kalaagi, Mohammed, Seetharamdoo, Divitha
core   +5 more sources