Search Results for author: Arjuna Madanayake

Found 6 papers, 0 papers with code

Towards a Low-SWaP 1024-beam Digital Array: A 32-beam Sub-system at 5.8 GHz

no code implementations19 Jul 2022 Arjuna Madanayake, Viduneth Ariyarathna, Suresh Madishetty, Sravan Pulipati, R. J. Cintra, Diego Coelho, Raíza Oliveira, Fábio M. Bayer, Leonid Belostotski, Soumyajit Mandal, Theodore S. Rappaport

Arithmetic complexity due to multiplication is reduced from the FFT complexity of $\mathcal{O}(N\: \log N)$ for DFT realizations, down to zero, thus yielding a 46% and 55% reduction in chip area and dynamic power consumption, respectively, for the $N=32$ case considered.

Orbital Angular Momentum (OAM) Carrying Vortex Wave generation in Dielectric Filled Circular Waveguide

no code implementations28 Sep 2021 Md Khadimul Islam, Arjuna Madanayake, Shubhendu Bhardwaj

In this work, a radial array of monopoles is designed to generate the vortex wave inside the waveguide.

Design of Maximum-Gain Dielectric Lens Antenna via Phase Center Analysis

no code implementations28 Sep 2021 Md Khadimul Islam, Arjuna Madanayake, Shubhendu Bhardwaj

In this work, a method is presented to maximize the obtained gain from millimeter-wave (mm-wave) lens antennas using phase center analysis.

Xilinx RF-SoC-based Digital Multi-Beam Array Processors for 28/60~GHz Wireless Testbeds

no code implementations3 Aug 2020 Sravan Pulipati, Viduneth Ariyarathna, Aditya Dhananjay, Mohammed E. Eltayeb, Marco Mezzavilla, Josep M. Jornet, Soumyajit Mandal, Shubhendu Bhardwaj, Arjuna Madanayake

Emerging wireless applications such as 5G cellular, large intelligent surfaces (LIS), and holographic massive MIMO require antenna array processing at mm-wave frequencies with large numbers of independent digital transceivers.

A Passive STAR Microwave Circuit for 1-3 GHz Self-Interference Cancellation

no code implementations3 Aug 2020 Udara De Silva, Sravan Pulipati, Satheesh Bojja Venkatakrishnan, Shubhendu Bhardwaj, Arjuna Madanayake

The proposed approach is highly-linear, free from noise, does not require switching or parametric modulation circuits, and has virtually unlimited bandwidth only set by the performance of COTS passive microwave components.

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