More than 20,000 radio antennas will soon connect over the Internet to scan largely unexplored radio frequencies, hunting for the first stars and galaxies and potentially signals of extraterrestrial ...

Frequency diverse array (FDA) MIMO radar techniques represent a substantial evolution in radar system design, combining the benefits of frequency diversity with multiple-input multiple-output (MIMO) ...

Radio astronomy has long been unsung and underappreciated, largely because it's never been able to cough up the kind of jaw-dropping visual images that are routine with large optical telescopes. But ...

Eye on the sky More than 130 Square Kilometre Array dishes will be added to the existing 64 of the SKA-precursor telescope MeerKAT to form a mid-frequency instrument. (Courtesy: South African Radio ...

A team of astronomers and engineers at ASTRON, the Netherlands Institute for Radio Astronomy, has successfully detected correlated interferometric radio signals, called “fringes,” from the sky with ...

The HFA is an acoustic "window" used in conjunction with the high frequency sail array. The primary purpose of an HFA window is to provide an acoustically transparent interface to seawater from the ...

P. Knight, D.J. Whythe, J.R. Chew, K.W.T. Hughes 1963 Jan Report 1963-33 Download Jan 1963 Measurements are described which have been made to determine the reduction in the distant field strength when ...

The notion of a phased array was initially articulated by Nobel Prize recipient K. F. Braun. Phased arrays have subsequently evolved into a formidable mechanism for wave manipulation. This assertion ...

Researchers have taken a step toward developing a type of antenna array that could coat an airplane's wings, function as a skin patch transmitting signals to medical implants, or cover a room as ...