This paper represents a study of simulation of a Dielectric Resonator Antenna (DRA) based on its rectangular shape for Artificial Neural Network (ANN). The DRA is intended to be used as the radiating element of a transmitting array of active integrated antennas; its input impedance must exhibit a proper resistive load at the fundamental resonance frequency, as well as a dominant reactive behavi...

We measure two-dimensional profiles of collimated microwave beams transmitted through composite wire and split-ring resonator prisms. Prior experiments suggest these structures have a negative index of refraction, though these claims have been questioned. Our 2D measurements demonstrate that transmission obeys Snell's law with a negative index, confirming the refractive nature of this signal an...

A tunable temporal photonic fractional differentiator using a silicon-on-isolator (SOI) electrically tuned microring resonator (MRR) is proposed and experimentally demonstrated. Through changing the voltage applied on the MRR, the fractional order of the photonic differentiator can be continuously tuned. The proposed fractional-order differentiator is demonstrated experimentally with Gaussian p...

An accompanying numerical simulation for obtaining field patterns, resonant frequencies, and the Q factor is proposed to evaluate the experimental conditions of complex permittivity reconstruction by the perturbation method and thereby improve its accuracy and flexibility. This approach is illustrated by analyzing the measurement of dielectric constant and the loss tangent of wet movie film in ...

Three-dimensional (3D) fullwave analysis of a microwave dielectric resonator filter (DRF) in a rectangular metallic enclosure is presented. By using a 3D finite-element method (FEM) to perform numerical simulations, parameters and predictions that are difficult to measure but actually affect the performance of a microwave DRF can be accurately determined. In the process, a significant phenomeno...