In the present paper notch loaded shorted microstrip patch antenna has been analyzed using cavity model. The proposed antenna shows dual band operation which depends on notch dimensions as well as shorting pin. The frequency ratio is found to be 1.75 for the notch loaded circular patch antenna. The theoretical results are compared with IE3D simulation.

Using a single circular Rydberg atom, we have prepared two modes of a su-perconducting cavity in a maximally entangled state. The two modes share a single photon. This entanglement is revealed by a second atom probing, after a delay, the correlations between the two modes. This experiment opens interesting perspectives for quantum information manipulation and fundamental tests of quantum theory.

We use three-photon photoemission electron microscopy (PEEM) to investigate the interference of coherently excited dipolar and quadrupolar resonant modes of plasmonic whispering gallery resonators formed by circular grooves patterned into a flat Au surface. Optical scattering and cathodoluminescence spectroscopy are used to characterize the cavity resonance spectra for a wide range of cavity ra...

We report pulsed emission from an optically pumped lead-salt vertical-cavity surface-emitting laser with a PbSe/PbSrSe quantum-well active region. The lasing wavelength of l54.44 mm is nearly constant over the temperature range 200–280 K, and the threshold is only 10.5 kW/cm at 260 K, where the gain peak and cavity mode are in resonance. Over 330 mW of peak power is emitted at 260 K, into a cir...

Abstract The density of a radially inhomogeneous unbounded space is derived as function form. Harmonic dynamics stress the medium with circular cavity investigated by complex variable method. governing equation under incident SH waves in expressed Helmholtz coefficient. It equivalently transformed into standard conformal transformation Then, fields can be proposed. results indicate that changes...

The effect of the excitation frequency synthetic jet actuators on mean velocity issuing from an array circular orifices is investigated experimentally, focusing acoustic characteristics actuator’s cavity. Two cavity configurations are considered. In first configuration, jets generated by exciting a single, large having sixteen via piezoelectric elements. second volume configuration divided into...

Frame by frame analysis of left ventriculograms has been performed in 10 normal subjects and 40 patients with heart disease. Left ventricular shape index was derived as 4 pi (cavity area)/(perimeter)2, which has a maximum value of 1 when the outline is circular. In normal subjects systole was always associated with progressive reduction in shape index, indicating that the cavity projection had ...