In geometry, there are surfaces that do without an inside or outside—and some need at least four dimensions to exist ...

Holes, patterns, and cutouts occur frequently in sheet metal parts and their creation is crucial to modeling these parts. "SolidWorks for the Sheet Metal Guy - Course 2: Hole Patterns and Notches” ...

Human and physical features are things that you can see all around you. Physical features like seas, mountains and rivers are natural. They would be here even if there were no people around. Human ...

Abstract: This paper presents the design of a microstrip line-fed substrate-integrated waveguide (SIW) ring antenna designed to excite a sixth-order circularly polarized conical radiation pattern.

9.5 x 8.75 in. (24.1 x 22.2 cm.) Subscribe now to view details for this work, and gain access to over 18 million auction results. Purchase One-Day Pass ...

Abstract: The synthesis and optimization of the radiation pattern of a monopole circular antenna array are described. The method is fast and effective since it employs impedance and radiation pattern ...