zno thin films with preferred orientation along the (002) plane were prepared onto the glass substrates by the sol-gel spin coating method for different post- annealing temperatures. the xrd study confirms that the thin films grown by this method have good crystalline hexagonal wurtzite structure. the optical band gap of the samples was determined from uv-visible spectra. it is found that the s...

A novel frequency reconfigurable antenna based on substrate integrated waveguide (SIW) for S-band and C-band applications is proposed. The employs a SIW resonant cavity structure with rectangular-ring slot long slit etched the top surface. An extra via post introduced to adjust resonance of low-frequency mode independently without affecting impedance matching high-frequency or decreasing gain. ...

An phase-sensitive amplifier (PSA) is capable of low-noise optical amplification. A frequency non-degenerate PSA (ND-PSA) requires idler light co-propagating with signal light. Therefore, spectral efficiency reduced by at least half compared to the system using phase-in-sensitive amplifiers such as an erbium-doped fiber amplifier. In this letter, we propose and demonstrate inter-band amplificat...

This study focuses on a dielectric model for wet soils that relates the complex permittivity and water content of bulk to obtain soil moisture retrievals from satellite observations. Contrary earlier examinations have been made Soil Moisture Ocean Salinity (SMOS) mission European Satellite Agency (ESA) at 1.4 GHz (L-band microwave range), this targets 6.9 (C-band) Advanced Microwave Scanning Ra...