A novel 2-D composite right/left-handed transmission line (CRLH-TL) metamaterial in polar coordinates is proposed for the first time, and applied to a multistandard antenna. The prototype antenna with triband operation colocated pattern polarization diversity specifically designed eliminate need multiple antennas processing center side significantly reduce area cost. Radial CRLH-TL waves of mod...

A sample of 59 sight lines to reddened Galactic OB stars was examined for correlations of the strength of the CO Fourth Positive (AΠ − XΣ) absorption band system with the ultraviolet interstellar extinction curve parameters. We used archival high-dispersion NEWSIPS IUE spectra to measure the CO absorption for comparison to parametric fits of the extinction curves from the literature. A strong c...

We report high resolution (R∼37,000) integral field spectroscopy of the central region (r<14 arcsec) of the Red Rectangle nebula surrounding HD44179. The observations focus on the λ5800Å emission feature, the bluest of the yellow/red emission bands in the Red Rectangle. We propose that the emission feature, widely believed to be a molecular emission band, is not a molecular rotation contour, bu...

Microquasars (MQs) present emission over the whole spectrum, from radio wavelengths to gamma-rays. The microquasar spectral energy distribution is very complex, being a signature of the different physical processes that generate the radiation emitted by these objects. In this work, we estimate the amount of broad-band emission produced by relativistic protons, released from the jet of a MQ, int...

The present work designed and investigated a 3D basic model for breast cancer detection at the ISM band. consists of two multi-slotted rectangular patch antennas three-layer phantom containing tumors. A antenna was 2.45 GHz using CST STUDIO SUITE 2018, where simulated results showed return loss better than -35 dB attended more 77 MHz bandwidth. diagnosis approach is based on exploiting electric...