A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...

Although the basic principle of radio direction finding is easy to understand (measure the phase difference between different ...

NASA officials wrapped up an investigation into an incident that caused significant damage to one of its largest Deep Space ...

Abstract: Machine-learning (ML)-assisted antenna-array design methods suffer from a heavy computational burden. In this article, a knowledge-guided active-base-element-modeling (KG-ABEM) method is ...

This paper presents a new pattern nulling method for linear antenna arrays using the honey formation optimization with a single component (HFOSC) algorithm. HFOSC was validated through extensive tests ...

This paper presents the optimization performance of non-uniform linear antenna array with optimized inter-element spacing and excitation amplitude using Particle Swarm Optimization (PSO). The aim of ...

Abstract: A novel method called alternating convex optimization is presented to synthesize unequally spaced linear arrays with minimum element spacing constraint. In this method, the problem of ...

Antenna arrays are used in a wide range of applications, including satellite communications, remote sensing, and radar systems. In particular, the square grid planar array is extensively used, because ...

Phased array antennas are advanced antenna systems that utilize the principle of constructive and destructive interference to steer a beam of radio waves electronically. This phenomenon happens ...

This article was written by Louis Frenzel, author of Principles of Electronic Communications Systems, that addresses this topic and much more. Antennas are much more than simple devices connected to ...

Radio Frequency (RF) antenna design is a critical aspect of modern wireless communication systems. Antennas serve as the interface between guided electromagnetic waves in transmission lines and ...

In previous parts of this series, we described how, when a wavefront approaches an array of elements, there’s a time delay between elements based on the wavefront angle θ relative to boresight. For a ...