Based on thin film lithium niobate platform, we experimentally demonstrate a high-performance ring-assisted Mach-Zehnder interferometer flat-top filter. It features a crosstalk lower than -25 dB, a ...

This paper proposes a W-band all-dielectric lens antenna with the characteristic flat-top beam. The lens loaded on the horn is composed of 10 concentric elliptical rings and a tapered matching layer.

Cerro El Cono, a unique mountain, stands tall in Peru's Amazon. Its shape resembles a pyramid. Locals believe it is a sacred ...

It's compact, solidly built and great for travel, but the slightly larger 13.8-inch version is the better choice as a daily ...

Meet Bille, the name given to the world's first monostable tetrahedron—a four-faced object that will always land on the same ...