Defense Advanced Research Projects AgencyTagged Content List

Communications and Networks

All manner of sending, receiving, connecting and protecting information

Showing 97 results for Communications RSS
07/12/2016
Normal radios operate in kilohertz (kHz) and megahertz (MHz) frequencies, bandwidths corresponding to electromagnetic oscillations in the thousands and millions of cycles per second ranges, respectively. Upping the ante, cell phones and radar systems operate in the billions of cycles per second range—that is, gigahertz (GHz) frequencies. But no one has managed to push radiofrequency technology into the trillions of cycles per second, or Terahertz (THz), range. With the Terahertz (THz) Electronics Program, however, DARPA has begun to make it possible.
07/19/2016
In March, DARPA officials first publicly floated plans for the Spectrum Collaboration Challenge, an initiative designed to ensure that the exponentially growing number of military and civilian wireless devices will have full access to the increasingly crowded electromagnetic spectrum. Today, with the Agency release of detailed postings about the competition’s architecture, rules, and two participation options for seeking one of the up to 30 available slots, SC2 is officially on.
08/30/2016
In a vision shared by innovators, entrepreneurs, and planners in both defense and civilian contexts, the skies of the future will be busy with unmanned aerial vehicles (UAVs). Unseen but central to the realization of this vision is wireless communication within and between those future fleets of UAVs that is reliable and resistant to both unintentional and ill-willed interference. “If these UAVs can’t communicate, they don’t take off or they don’t operate the way we want them to” said Josh Conway, a program manager in DARPA’s Microsystems Technology Office. 
12/16/2016
Here’s something easy to forget when you are chatting on your cell phone or flipping channels on your smart TV: although wireless communication seems nothing short of magic, it is a brilliant, reality-anchored application of physics and engineering in which radio signals travel from a transmitter to a receiver in the form of electric and magnetic fields woven into fast-as-light electromagnetic waves.
01/04/2017
A DARPA-backed small business effort broke boundaries for long-endurance flight this month by launching a uniquely designed, combustion-powered unmanned aircraft that stayed aloft for more than two days and two nights. The flight was terminated several days ahead of schedule because of incoming weather. But the craft—built by Vanilla Aircraft of Falls Church, Virginia—landed safely with more than half its fuel still onboard, suggesting it is capable of setting additional records for powered flight in its weight and power class and could ultimately offer important new capabilities to ground forces and others.