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.

Photoshop cc 2020 tutorial showing how to create an awesome, circular pixel stretch effect. Royalty-free stock photos ...

Abstract: The global navigation satellite system (GNSS) refraction pattern technique makes use of two pairs of GNSS receivers and antennas to collect the refracted signal in the medium and the direct ...

Alessana is a researcher at the Federal University of Rondonópolis who studies how biomass ash and solid waste can restore degraded soils and reduce agricultural production costs. Her work focuses on ...