A breakthrough deal to attempt to limit global temperature rises was agreed at a conference of world nations in December 2015. These charts from the time show how and why the Earth’s climate is ...

Abstract: It is difficult for a standing-wave waveguide slot array antenna to generate a complex beam shape in H-plane, such as the cosecant squared pattern. The reason is that a conventional standing ...

In the present work an analytical formulation to synthesize non-uniform phase distributions at cylindrical apertures is described. Assuming three distinct amplitude distributions, the respective ...

Abstract: The antenna array loaded with complex-amplitude metasurface (MS) is reported to realize a cosecant squared beam. A novel MS unit-cell is proposed to independently manipulate the amplitude ...