Abstract: Even after decades of sonar design, approximations to the directivity factor (DF) or index of an array, are often used inappropriately. Many of the approximations commonly used provide ...

Abstract: This paper revisit and extend the interesting case of bounds on the Q-factor for a given directivity for a small antenna of arbitrary shape. A higher directivity in a small antenna is ...

Knowing the directivity specification of your measurement device can go a long way in setting measurement expectations. Directional power measurements are important when determining transmitter output ...

Rupture directivity, implying a predominant earthquake rupture propagation direction, is typically inferred upon the identification of 2D azimuthal patterns of seismic observations for weak to large ...

1 Shanghai Satellite Engineering Institute, Shanghai, China. 2 Institute of Electronics and Telecommunications of Rennes (IETR), University of Rennes 1, Rennes, France. 3 Laser Physics Laboratory (LPL ...

The difference between phase velocities of the odd and even modes in inhomogeneous microstrip coupled lines makes the microstrip directional coupler a poor device regarding directivity. In this work, ...

This file type includes high resolution graphics and schematics when applicable. Metamaterials offer great promise in the design of high-frequency components, such as antennas. If properly applied, ...