Instead of separate tech to spot mines and subs, the Navy is exploring the convenience of having one sonar that allows a ...

Abstract: An integrated antenna system covering 5G Sub-6 GHz and millimeter-wave bands is proposed, combining a spoof surface plasmon polariton (SSPP) antenna and two Vivaldi arrays. The integrated ...

Of all the remote-control vehicles one can build, a submarine is possibly the hardest: if something goes wrong with almost any other vehicle, it’s easy to recover and repair, but a submarine is a ...

Ask the publishers to restore access to 500,000+ books. An icon used to represent a menu that can be toggled by interacting with this icon. A line drawing of the Internet Archive headquarters building ...

Abstract: The design and analysis of a compact broadband antenna supporting the long-term evolution (LTE) bands 41/42/43/46/48/52 and the sub-6 GHz bands N46/N77/N78/N79, Bluetooth, and Wi-Fi are ...

On January 21, 1954, First Lady Mamie Eisenhower christened the USS Nautilus (SSN-571), marking the launch of the world's first nuclear-powered submarine. The ceremony took place at the Electric Boat ...

Dangerholm is back with a new build, and this time the Swedish super-bike creator has produced a sub-5-kilo Scott Addict RC. The bike takes a stock Scott Addict RC frame, already a lightweight ...