Results 41 to 50 of about 777 (161)
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
core +1 more source
IEEE Access, 2022 Innovating passive and chipless coded landmarks have recently emerged for high accuracy self-localization systems. Existing landmarks make use of the combination of retro-directive devices, corner reflectors and lenses, with a coding particle in order to
Ali Alhaj Abbas +3 more
doaj +1 more source
Robust Synthesis Algorithm for Directional Modulation Signal with Array Manifold Vectors Uncertainty
International Journal of Antennas and Propagation, Volume 2020, Issue 1, 2020., 2020 Directional modulation (DM) has become a new research hotspot of physical layer security (PLS) communication at the transmitter side. In this paper, we propose a robust synthesis algorithm for DM signal under the condition of the array manifold vectors perturbation.
Tao Hong, Ana Alejos
wiley +1 more source
Wireless Communications and Mobile Computing, Volume 2020, Issue 1, 2020., 2020 Millimeter‐wave (mmWave) networks with the frequency spectrum ranging from 30 GHz (with wavelength 10 mm) to 300 GHz (with wavelength 1 mm), can support massive wireless data in fifth‐generation (5G) systems. Importantly, large colocated antenna elements can be exploited at the base station (BS) to facilitate beam‐steering synthesis along the users ...
Shaddrack Yaw Nusenu +2 more
wiley +1 more source
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
core +1 more source
Overview on the Phase Conjugation Techniques of the Retrodirective Array
International Journal of Antennas and Propagation, 2010 This paper presents an overview on the phase conjugation techniques of the retrodirective antenna array. The concepts, advantages, and disadvantages of phase conjugation techniques are introduced.
Lei Chen +3 more
doaj +1 more source
Beam Training Technique for Millimeter-Wave Cellular Systems Using Retrodirective Arrays
IEEE Access, 2020 Beam training in millimeter-wave (mmWave) cellular systems requires a long processing time that is proportional to the product of the number of transmitting and receiving beams.
Yeong Jun Kim +3 more
doaj +1 more source
Analysis and design of retrodirective arrays for multiple-interrogator environments [PDF]
, 2010 Retrodirective arrays are an attractive technology for mobile, wireless devices be-cause of their capability to autonomous steer a beam. This thesis focuses on the analysis and design of retrodirective-array technology for multiple-interrogator ...
Chun, Tyler Fujio MunCheong
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IEEE Access, 2020 An isolation technique, which does not require conventional circulators, is proposed for the realization of a simple and low-cost aperture-coupled circularly polarized antenna for application to full-duplex devices.
Paul Le Bihan +10 more
doaj +1 more source
Retrodirective technologies for Terrestrial Sensor Networks [PDF]
, 2008 This thesis focuses on the development of retrodirective technologies for remote intelligence-gathering sensor networks. The directivity and autonomous beam-steering capabilities of retrodirective arrays make them attractive candidates for networks ...
Pang, Ryan N.
core +1 more source