Abstract: Ultrasonic phased array has the functions of ultrasonic array, 3D imaging, and defect multi-signal characterization. However, there are problems in current detection such as effective ...

Abstract: For enhanced communication on board of aircraft novel antenna systems with broadband satellite-based capabilities are required. The installation of such ...

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 ...

Micromachining can be used to create a infra-red beam-forming phased array, according to engineers at University of California, Berkeley, who have made a 160 x 160 array on a 3.1 x 3.2mm die that can ...

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 ...

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 ...

In the medical applications of ultrasonic imaging, sound waves of high frequency are usually employed to produce in-depth cross-sectional images of internal organs. Special multi-element transducers ...