DARPA clears path for advanced communications, sensors

Aug 01, 2012
DARPA clears path for advanced communications, sensors

DARPA researchers have created the world’s first solid state receiver to demonstrate gain at 0.85 terahertz (THz).

This is the latest breakthrough in the DARPA THz Electronics program in its quest for transistor-based electronics that will enable electronic capabilities at THz frequencies. This represents progress toward the second major technical milestone on the way to 1.03 THz integrated circuits. Previous milestones included demonstrations at 0.67 THz. Operating at these high frequencies enables a host of DoD electronics capabilities such as advanced communication and sensor systems.

“Realizing circuits at 0.85 THz is a remarkable achievement for the program and is the latest success from a long-term investment in frequency-scaled RF transistors,” explained John Albrecht, DARPA program manager. “The ability to coherently process signals at 0.85 THz provides a means to generate and radiate the high frequency signals needed for applications such as ’s Video Synthetic Aperture Radar (ViSAR) program. VISAR seeks to develop and demonstrate a targeting sensor which operates through clouds as effectively as today’s infrared (IR) operate in clear weather. This revolutionary advance would give U.S. warfighters an advantage in an especially challenging portion of the RF spectrum.”

Explore further: Supercomputers a hidden power center of Silicon Valley

Related Stories

Photonics: strong vibrations

May 10, 2012

A new approach to generating terahertz radiation will lead to new imaging and sensing applications. The low energy of the radiation means that it can pass through materials that are otherwise opaque, opening ...

Terahertz imaging goes the distance

Apr 26, 2007

Terahertz (THz) radiation, or far-infrared light, is potentially very useful for security applications, as it can penetrate clothing and other materials to provide images of concealed weapons, drugs, or other objects. However, ...

Graphene mixer can speed up future electronics

Jan 03, 2012

Researchers at Chalmers University of Technology (Sweden) have for the first time demonstrated a novel subharmonic graphene FET mixer at microwave frequencies. The mixer provides new opportunities in future ...

Terahertz-controlling device is built

Dec 04, 2006

U.S. government scientists say they've built a device that can manipulate terahertz radiation, perhaps leading to new imaging and communications devices.

Recommended for you

NSA winds down once-secret phone-records collection program

11 hours ago

The National Security Agency has begun winding down its collection and storage of American phone records after the Senate failed to agree on a path forward to change or extend the once-secret program ahead of its expiration ...

Uber drivers fined in Hungary

11 hours ago

The Hungarian tax authority fined Uber drivers in its first probe against the ride-sharing service which the economy ministry said Saturday "ignores passenger safety" and must be made to follow regulations.

Architects to hatch Ecocapsule as low-energy house

May 23, 2015

Where people call home depends on varied factors, from poverty level to personal philosophy to vanity to community pressure. Ecocapsule appears to be the result of special factors, a team of architects applying ...

Apple may deliver ways to rev up the iPad, report says

May 23, 2015

MacRumors last month said that the latest numbers from market research firm IDC's Worldwide Quarterly Tablet Tracker revealed Apple stayed on as the largest vendor in a declining tablet market. The iPad ...

User comments : 2

Adjust slider to filter visible comments by rank

Display comments: newest first

GSwift7
not rated yet Aug 06, 2012
That's very cool. When we get ViSAR to work, it will be another thing we can do that nobody else can. Being able to attack through clouds enables an AC130 gunship to use clouds as defense. A ground enemy under the clouds would not be able to shoot back except blindly.
cdkeli
1 / 5 (1) Aug 20, 2012
With the disturbing opinion that the application lies in the military realm reveals an appalling lack of scientific insight, creativity, and understanding,,,

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.