What are optical phased arrays? Optical phased arrays (OPAs) are devices that manipulate the cross-sectional shape and direction of optical beams in accordance with the principles of optical ...

2017年NHK入局。同年より技研にて3D映像デバイスの研究開発に従事。専門は、レーザー工学や非線形光学、導波光学など。趣味は写真と旅行。 光フェーズドアレーとは 光フェーズドアレー（Optical Phased Array; OPA）は、光の回折と干渉の原理を利用して光ビーム ...

In Part 1, we introduced the phased array concept, beam steering and array gain. In Part 2, we presented the concept of grating lobes and beam squint. In this section, we begin with a discussion of ...

Lockheed Martin has created a novel millimetre-wave dish antenna for satellites and ground terminals, particularly for space-based 5G communication. Called ‘wide angle ESA fed reflector’ (Waefr), it ...

Iran last week unveiled two new indigenously developed long-range radar systems, but Israeli experts are downplaying their capabilities. The Khalij-e Fars ('Persian Gulf') and Moraqeb ('Watchful') ...

In a ceremony in Tehran, Air Defense Commander Brigadier General Alireza Sabahi Fard unveiled ‘Kashef-99’ radar. The homegrown device is a 3D phased-array radar system that is carried on a vehicle, ...

(Nanowerk News) Chip-scale silicon photonics optical phased array (OPA) is widely used in free-space communication. However, due to the limitation of optical device design and manufacture, the ...