We demonstrate enhanced focusing of polychromatic light through strongly scattering media. The experimental results validate a theoretical relationship among source bandwidth, sample bandwidth, and initial contrast of a far-field speckle. For various combinations of source bandwidth and sample bandwidth, we optimize far-field focal intensity enhancement using a MEMS spatial light modulator to m...

Telephone speech is typically bandlimited to 4 kHz, resulting in a ‘muffled’ quality. Coding speech with bandwidth greater than 4 kHz reduces this distortion, but requires a higher bit rate to avoid other types of distortion. An alternative to coding wider bandwidth speech is to exploit correlation between the 0-4 kHz and 4-8 kHz speech bands to resynthesize wideband speech from narrowband spee...

The paper briefly reviews the historical background of dielectric resonator antenna and its bandwidth enhancement techniques. The main focus is on a compact DRA that can offer broad band operation. It has been illustrated that dual resonance and multi resonance operation can be much effective to give wide band characteristics of DRA. Index Terms dielectric resonator antenna, broadband, multi re...

A novel technique to enhance the bandwidth of mobile phone antennas using YIG ferrite is proposed. The applied in two slot which are proposed antenna and reference antenna. have same shaped consisting a rectangle connected circle etched on ground plane. slab attached at region near circular plane each measured with enhanced 0.669–1.533 1.69–5 GHz compared 0.81–1.44 2.3–5 for without ferrite. 0....

In this paper we present a method for estimating the available bandwidth of a network path. It is an extension and enhancement of the bandwidth measurement method TOPP. TOPP actively probes a network path by sending probe packets in a predetermined time pattern. Our enhancement involves a formalized estimation algorithm based on constrained linear regression. Using the algorithm, bandwidth meas...