Solution: To convert the point $(x, y, z)$ in rectangular coordinates to spherical coordinates $(\rho, \theta, \phi)$, we use the following formulas: $\rho = \sqrt{x ...

Abstract: This paper presented a full-wave analysis of a spherical rectangular microstrip antenna using method of moments, emphasizing the use of an attaching current in the modeling of the patch ...

Abstract: The input and mutual impedances of rectangular microstrip patches mounted on a spherical structure are studied in the paper. The analysis approach is based on the moment method where the ...

Why are all planets in space spherical or elliptical and not rectangular or any other shape? As every planet has its own gravitational force, all particles are forced ...