Vortex Wave Directional Modulation With Time-Dependent Phase Offset FDA
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Communications Letters"
DOI: 10.1109/lcomm.2022.3165122
Abstract: A direction-range-time dependent vortex wave directional modulation (DM) scheme based on the frequency diverse array (FDA) is proposed for secure transmission. We design the random frequency offset for the array element in a circular arc… read more here.
Keywords: time; time dependent; directional modulation; phase ... See more keywords
Machine Learning for Automating Millimeter-Wave Directional Coupler Designs
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Circuits and Systems II: Express Briefs"
DOI: 10.1109/tcsii.2021.3094221
Abstract: A computational approach to automate mm-wave Directional Couplers can greatly improve upon the current techniques that rely on trial-and-error. To build such an automated framework, we propose a Machine Learning technique that, within a computational… read more here.
Keywords: machine learning; learning automating; automating millimeter; directional couplers ... See more keywords
Measurement of Ocean Wave Directional Spectra Using Airborne HF/VHF Synthetic Aperture Radar: A Theoretical Evaluation
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2017.2663378
Abstract: Currently, images obtained with microwave synthetic aperture radars (SARs) are widely used for measuring directionality of ocean waves on a global and continuous scale. However, with all the advantages of the microwave SAR systems, the… read more here.
Keywords: wave directional; measurement ocean; aperture; radar ... See more keywords
Statistical Comparison of Ocean Wave Directional Spectra Derived From SWIM/CFOSAT Satellite Observations and From Buoy Observations
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Geoscience and Remote Sensing"
DOI: 10.1109/tgrs.2022.3199393
Abstract: The comparison and verification of ocean wave spectrum by remote sensing and in situ measurements at the spectral level are quite rare because the use of the traditional comparison method leads to very limited spatiotemporal… read more here.
Keywords: directional spectra; comparison; sea; ocean wave ... See more keywords
A Novel and Compact Eight-Port Forward-Wave Directional Coupler With Arbitrary Coupling Level Design Using Four-Mode Control Technology
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Transactions on Microwave Theory and Techniques"
DOI: 10.1109/tmtt.2016.2623709
Abstract: We propose a novel, eight-port, forward-wave directional coupler with periodically patterned ground structures. The input impedances of the four modes for the proposed coupler can be matched, and the phase difference between the even–even and… read more here.
Keywords: wave directional; port forward; eight port; coupler ... See more keywords