Zobrazeno 1 - 10
of 342
pro vyhledávání: '"Madanayake, Arjuna"'
Recent research in light scattering has prompted a re-evaluation of complex quantities, particularly in the context of complex frequency signals, which exhibit exponential growth or decay unlike traditional harmonic signals. We introduce a novel appr
Externí odkaz:
http://arxiv.org/abs/2408.09617
In experimental physics, it is essential to understand electromagnetic (EM) wave scattering across EM spectrum, from radio waves to X-rays, and is pivotal in driving photonics innovations. Recent advancements have uncovered phenomena like bound state
Externí odkaz:
http://arxiv.org/abs/2402.14250
Autor:
Kang, Seongjoon, Mezzavilla, Marco, Rangan, Sundeep, Madanayake, Arjuna, Venkatakrishnan, Satheesh Bojja, Hellbourg, Gregory, Ghosh, Monisha, Rahmani, Hamed, Dhananjay, Aditya
The upper mid-band - roughly from 7 to 24 GHz - has attracted considerable recent interest for new cellular services. This frequency range has vastly more spectrum than the highly congested bands below 7 GHz while offering more favorable propagation
Externí odkaz:
http://arxiv.org/abs/2309.03038
Magneto-optical isolators and circulators have been widely used to safeguard quantum devices from reflections and noise in the readout stage. However, these devices have limited bandwidth, low tunability, are bulky, and suffer from high losses, makin
Externí odkaz:
http://arxiv.org/abs/2303.10269
Autor:
Kehelella, Kavinda, Leelarathne, Gayangana, Marasinghe, Dhanuka, Kariyawasam, Nisal, Ariyarathna, Viduneth, Madanayake, Arjuna, Rodrigo, Ranga, Edussooriya, Chamira U. S.
Transformers combined with convolutional encoders have been recently used for hand gesture recognition (HGR) using micro-Doppler signatures. We propose a vision-transformer-based architecture for HGR with multi-antenna continuous-wave Doppler radar r
Externí odkaz:
http://arxiv.org/abs/2209.05032
Autor:
Madanayake, Arjuna, Ariyarathna, Viduneth, Madishetty, Suresh, Pulipati, Sravan, Cintra, R. J., Coelho, Diego, Oliveira, Raíza, Bayer, Fábio M., Belostotski, Leonid, Mandal, Soumyajit, Rappaport, Theodore S.
Publikováno v:
IEEE Transactions on Antennas and Propagation, v. 68, n. 2, Feb. 2020
Millimeter wave communications require multibeam beamforming in order to utilize wireless channels that suffer from obstructions, path loss, and multi-path effects. Digital multibeam beamforming has maximum degrees of freedom compared to analog phase
Externí odkaz:
http://arxiv.org/abs/2207.09054
Autor:
Madanayake, Arjuna1 (AUTHOR) amadanay@fiu.edu, Lawrance, Keththura1 (AUTHOR) klawr041@fiu.edu, Kumarasiri, Bopage Umesha1 (AUTHOR) ssiva011@fiu.edu, Sivasankar, Sivakumar1 (AUTHOR), Gunaratne, Thushara2 (AUTHOR) thushara.gunaratne@nrc-cnrc.gc.ca, Edussooriya, Chamira U. S.3 (AUTHOR) chamira@uom.lk, Cintra, Renato J.4 (AUTHOR) rjdsc@de.ufpe.br
Publikováno v:
Algorithms. Aug2024, Vol. 17 Issue 8, p338. 24p.
In this paper, we propose a method to generate Orbital Angular Momentum (OAM) carrying vortex waves inside a metallic circular waveguide (CW). These waves feature ability to carry multiple orthogonal modes at the same frequency, by the virtue of thei
Externí odkaz:
http://arxiv.org/abs/2109.14064
In this work, a method is presented to maximize the obtained gain from millimeter-wave (mm-wave) lens antennas using phase center analysis. Commonly, for designing a lens antenna, the lens is positioned just on top of the antenna element which is not
Externí odkaz:
http://arxiv.org/abs/2109.14057
Autor:
Medina, George, Jida, Akashdeep Singh, Pulipati, Sravan, Talwar, Rohith, J, Nancy Amala, Al-Naffouri, Tareq Y., Madanayake, Arjuna, Eltayeb, Mohammed
Large antenna arrays enable directional precoding for Millimeter-Wave (mmWave) systems and provide sufficient link budget to combat the high path-loss at these frequencies. Due to atmospheric conditions and hardware malfunction, outdoor mmWave antenn
Externí odkaz:
http://arxiv.org/abs/2011.00828