The two-dimensional ray tracing method allows an easy and fast modeling of tropospheric propagation in the microwave frequency range. A version of this method that determines ray trajectories, ...

Bile duct cancer will often only cause symptoms when it is advanced, making it hard to cure. Obesity, smoking, and excessive alcohol use increase the risk of bile duct cancer. Surgery is the main ...

Abstract: A wide operating bandwidth for a single-layer coaxially fed rectangular microstrip patch antenna can be obtained by cutting a U-shaped slot on the patch. This antenna structure has recently ...

Abstract: Evaporation ducts have a significant impact on electromagnetic (EM) wave propagation. The accurate prediction of EM propagation loss (PL) is important for the practical application of EM ...