eeworldonline

Butler Matrix drives Wi-Fi and other phased-array antennas

This passive device lets you steer signal beams for over-the-air wireless test systems. Because it’s designed for antenna, amplifier, and RF system testing, the LBM-7250-4 Lab Brick Butler Matrix lets ...
C&EN

Matrix-Insensitive Sensor Arrays via Peptide-Coated Nanoparticles: Rapid Saliva Screening for Pathogens in Oral and Respiratory Diseases

Aiiso Yufeng Li Family Department of Chemical and Nano Engineering, University of California, San Diego, La Jolla, California 92093, United States ...
IEEE

Synthesis of Large Sparse Sensor Arrays Utilizing Relaxed-Intensified Exploration Algorithm (RIEA) for Optimal UAVs Beamforming

Abstract: In this study, we present a novel relaxed-intensified exploration algorithm (RIEA) to synthesize large-aperture sensor arrays producing good array sparsity and optimal weight vector of the ...
GitHub

Check for symmetry in

A simple check could be something like symmetric = not np.any((matrix!=matrix.T).data) (here assuming that it is scipy.sparse.csr_matrix). Here is a simple example (not the most efficient way to check ...
GitHub

hdbscan and sparse precomputed distance matrix

so i am working at the following problem i have millions of sparse data points that are very high dimensional. Using a sparse precomputed distance matrix seems one way to feed this data into hdbscan.