Silicon Ribbon-Based Dual-Beam Optical Phased Array with Low Crosstalk and Large FoV
Applied Sciences, 2022 In this paper, a silicon ribbon (SR)-based microstructure is developed and added to a 32-channel optical phased array (OPA) to reduce the crosstalk between the antennas of grating waveguides.
Hsun-Yuan Chi +4 more
doaj +1 more source
An Efficient Method for Performance Monitoring of Active Phased Array Antennas [PDF]
, 2009 Modern synthetic aperture radars (SARs) are equipped with active phased array antennas to electronically generate various antenna beams. The TerraSAR-X satellite is a high resolution SAR system launched in June 2007.
Schwerdt, Marco +2 more
core +1 more source
Photonic wideband phased array: an optical time steered antenna based on a new true time delay unit [PDF]
, 2006 L’attività di ricerca svolta durante il corso di dottorato e descritta dettagliatamente all’interno della tesi è stata diretta al progetto di una innovativa rete ottica di formazione del fascio per antenne a schiera a banda larga esenti dal fenomeno del ...
Curcio, Claudio
core +1 more source
The Warm Receiver Section and the Digital Backend of the PHAROS2 Phased Array Feed [PDF]
, 2019 We describe the development of a multi-channel “warm receiver section” (WS) and of a digital beamformer for the PHAROS2 Phased Array Feed (PAF), a PAF demonstrator for radio astronomy application across the 4-8 GHz radio frequency (RF) band.
PUPILLO, Giuseppe +29 more
core +1 more source
Applied Sciences, 2023 By introducing the arrayed waveguide router (AWGR) optical true time-delay (OTTD) architecture in bent-pipe satellite optical inter-link to optically assist the RF phased array in Low-earth orbit satellites will extend the multi-hop bent-pipe satellite ...
Shiyi Xia +7 more
doaj +1 more source
Optimal E-Field Vector Combination for a Highly Focused Antenna-Array [PDF]
, 2014 A near-field highly focused circular phased-array antenna for 5.8-GHz radio frequency identification (RFID) applications is presented. The electric field (E-field) at the focus is enhanced by a constructive vector combination in a three-dimensional (3-D)
Perallos, Asier +5 more
core +1 more source
Design of a Low-Crosstalk Sub-Wavelength-Pitch Silicon Waveguide Array for Optical Phased Array
IEEE Photonics Journal, 2021 In this work, a compact sub-wavelength-pitch silicon waveguide array with low crosstalk is proposed and analyzed. The crosstalk is suppressed by periodic silicon nano-blocks symmetrically arranged along the silicon strip waveguides.
Guangzhu Zhou +3 more
doaj +1 more source
First Demonstration of Dynamic High-Gain Beam Steering With a Scanning Lens Phased Array
IEEE Journal of Microwaves, 2022 We report on the first demonstration of dynamic beam steering using a scanning lens phased array. A scanning lens phased array relies on a combination of mechanical and electrical phase shifting to dynamically steer a high-gain beam beyond the grating ...
Sjoerd Bosma +4 more
doaj +1 more source
A Design Method of Optical Phased Array With Insufficient Phase Tuning Range
IEEE Photonics Journal, 2020 Optical phased array (OPA) can achieve beam steering by controlling the phase distribution of each channel. In traditional OPA, 2π phase tuning range is required to achieve beam steering.
Bo Yang +3 more
doaj +1 more source
FSO Receiver With Adaptive Alignment Based on Pure Phased Holographic Imaging
Frontiers in Physics, 2021 This paper proposes a free space optical communication (FSO) receivier system with adaptive alignment based on pure phase holographic imaging. During the frame header transmission period, the optical phased array in this system performs specific ...
Haibo Wang, Zaichen Zhang, Yidi Zhang
doaj +1 more source