An acoustic curtain is an array of microphones used for recording sound which is subsequently reproduced through an array of loudspeakers in which each loudspeaker reproduces the signal from its corresponding microphone. Here the sound originates from a point source on the axis of symmetry of the circular array. The Kirchhoff-Helmholtz integral for a plane circular curtain is solved analyticall...

A new configuration of sparse array is proposed in this article to estimate the direction-of-arrivals (DOAs) and polarizations of multiple sources. This constrained sparse array is composed of a dipole-triad, a loop-triad, and a single antenna, which can be a dipole, a loop, or a scalar-sensor. These three units comprise a triangular geometry in the space. This geometry creatively synergizes th...

   This article describes a study, using numerical simulation, of the optical properties of nano particles as a function of their size. Many methods introduced to simulate and calculate the interaction of light and particle, such as Mie analysis, boundary element and finite element methods. The Discrete Dipole Approximation (DDA), wherein a target geometry is modeled as a ...

This paper illustrates the design and development of series-fed two-dipole-array antenna (STDA) for Wi-Fi applications. The proposed consists two dipole elements different lengths, which are serially joined by coplanar strip line. incorporates a coaxial/probe feeding technique with balun as an alternative mechanism. main goal this was to create high-gain array configuration For STDA configurati...

This study proposes a design of low-profile ultra wide-band cylindrical antenna array with plus/minus 45-degree dual polarization. The proposed compact produces an omnidirectional radiation pattern in the azimuth plane to cover all directions. It consists $20\times 4$ dual-polarized elements within diameter 131 mm and heig...

In Nature, fish have the ability to localize prey, school, navigate, etc., using the lateral-line organ. Artificial hair flow sensors arranged in a linear array shape (inspired by the lateral-line system (LSS) in fish) have been applied to measure airflow patterns at the sensor positions. Here, we take advantage of both biomimetic artificial hair-based flow sensors arranged as LSS and beamformi...