the pattern of the antenna can be easily steered without a rotary joint. To demonstrate this concept, a rotary-joint-free H-plane horn antenna is designed, and its performance is predicted using EM ...

Abstract: A structured finite ground plane to improve the radiation pattern of arrayed monopoles is investigated ... regarding the optimal dimensions of the RGP. Published in: IEEE Antennas and ...

Airport officials called it a "brief limited-scale ground stop" issued by the Federal Aviation Administration after a "reported possible security issue." Donald Trump Won't Sign His Own Bill ...

This is the first time anyone in the United States has flown a reusable hypersonic rocket plane since the last flight of the X-15, the iconic rocket-powered aircraft that pushed the envelope of ...

This is the first time anyone in the United States has flown a reusable hypersonic rocket plane since the last flight of the X-15, the iconic rocket-powered aircraft that pushed the envelope of ...

Ditches, fences, and various types of borders further created spaces between the parcels, creating lines and shapes easily visible from an airplane, but not so much on the ground. Kansas is one ...

“Suddenly it nose-dived into the ground... I rushed to the crash site and saw that the plane was already in pieces and slightly buried in the ground. “I tried to look for the victims, but I ...

In this paper, a novel broadband high-selectivity stacked filtering antenna with multiple radiation nulls is proposed. The antenna consists of a short-circuited stepped impedance feeding line and two ...

8 isotropic elements Uniform spacing of 0.5 wavelengths No beam steering (broadside pattern) Visualizes the array’s radiation pattern in 2D ...