Monthly Archives: April 2013

2013/04/30 New Method Joins Gallium Nitride and Diamond for Better Thermal Management

TMT 

Many military radio frequency (RF) systems, like radar and communication systems, use a class of power amplifiers (PAs) called monolithic microwave integrated circuits (MIMIC). MMIC PAs using gallium nitride (GaN) transistors hold great promise for enhanced RF performance, but operational characteristics are strongly affected by thermal resistance. Much of this resistance comes at the thermal junction where the substrate material of the circuit connects to the GaN transistor. If the junction and substrate have poor thermal properties, temperature will rise and performance will decrease.

2013/04/30 New Method Joins Gallium Nitride and Diamond for Better Thermal Management

TMT 

Many military radio frequency (RF) systems, like radar and communication systems, use a class of power amplifiers (PAs) called monolithic microwave integrated circuits (MIMIC). MMIC PAs using gallium nitride (GaN) transistors hold great promise for enhanced RF performance, but operational characteristics are strongly affected by thermal resistance. Much of this resistance comes at the thermal junction where the substrate material of the circuit connects to the GaN transistor. If the junction and substrate have poor thermal properties, temperature will rise and performance will decrease.

2013/04/30 DARPA Seeks Clean-Slate Ideas For Mobile Ad Hoc Networks (MANETs)

Manet

Troops operating in forward locations without telecommunication infrastructure often rely on a mobile ad hoc network (MANET) to communicate and share data. The communication devices troops use on foot or in vehicles double as nodes on the mobile network. A constraint with current MANETs is they can only scale to around 50 nodes before network services become ineffective. For the past 20 years, researchers have unsuccessfully used Internet-based concepts in attempts to significantly scale MANETs.

HUD ISSUES NOTICE ON ASSISTANCE ANIMALS AND REASONABLE ACCOMMODATIONS FOR PERSONS WITH DISABILITIES

WASHINGTON – The U.S. Department of Housing and Urban Development (HUD) today issued a reaffirming that housing providers must provide reasonable accommodations to persons with disabilities who require assistance animals. The “Notice on Service Animals and Assistance Animals for People with Disabilities in Housing and HUD-Funded Programs” discusses how the Fair Housing Act and the Americans with Disabilities Act (ADA) intersect regarding the use of service or assistance animals by persons with disabilities.

Read the Notice

Read Press Release

HUD, UTAH MORTGAGE COMPANY SETTLE PREGNANCY DISCRIMINATION CLAIM

HUD reached a Conciliation Agreement with Primary Residential Mortgage, Inc. (PRMI), in Salt Lake City, UT, settling allegations that the lender denied a Baltimore, Maryland, woman a mortgage loan because she was pregnant and on maternity leave. The woman, who applied for the loan in her name, and her husband filed a complaint with HUD alleging discrimination after one of PRMI’s loan officers told her that she was a “good risk” and that the lender would be willing to finance her loan, but only after she returned to work. After being unable to get a loan from PRMI, the woman and her husband applied for a loan with another lender and were approved.

Read Agreement

Read Press Release

2013/04/30 DARPA Seeks Clean-Slate Ideas For Mobile Ad Hoc Networks (MANETs)

Manet

Troops operating in forward locations without telecommunication infrastructure often rely on a mobile ad hoc network (MANET) to communicate and share data. The communication devices troops use on foot or in vehicles double as nodes on the mobile network. A constraint with current MANETs is they can only scale to around 50 nodes before network services become ineffective. For the past 20 years, researchers have unsuccessfully used Internet-based concepts in attempts to significantly scale MANETs.

HUD, DOJ RELEASE NEW GUIDANCE ON ‘DESIGN AND CONSTRUCTION’ REQUIREMENTS UNDER THE FAIR HOUSING ACT

WASHINGTON – New guidance released today by the U.S. Department of Housing and Urban Development (HUD) and the Department of Justice (DOJ) reinforces the Fair Housing Act requirement that multifamily housing be designed and constructed so that it isaccessible to persons with disabilities. Read HUD and DOJ’s new guidance.

Webinar: Falling Into Decay: Postmortem Interval and Molecular Autopsy – Part II

Join us on 9th at 1pm ET for presentations on:

  • Applications of Curvilinear Development Modeling for the Blow Fly Lucilia Sericota (Meigen), Leon Higley and Amanda Fujikawa
  • Investigating Unexplained Deaths through Molecular Autopsies, Yingying Tang

These Webinars are presented by NIJ’s Forensic Science Technology Center of Excellence, hosted by RTI International.

2013/04/25 DARPA Driving Critical Technological Surprise

Dr. Prabhakar Left Image

During a recent media briefing, the DARPA Director, Arati Prabhakar, elucidated what the Agency does for our nation, how it does it, how it thinks about its mission in the context of today’s realities and the future that its building by creating the next generation of technology to give Defense leaders more options for tomorrow’s missions.

2013/04/22 DARPA Announces Winner of the First FANG Challenge

Drive Train

Today, the Defense Advanced Research Projects Agency (DARPA) awarded a $1 million prize to “Ground Systems”, a 3-person team with members in Ohio, Texas and California, as the winner of the Fast Adaptable Next-Generation Ground Vehicle (FANG) Mobility/Drivetrain Challenge. Team Ground Systems’ final design submission received the highest score when measured against the established requirements for system performance and manufacturability.

2013/04/16 Smaller Pixels, Smaller Thermal Cameras for Warfighters

5Micron

The military uses long-wave infrared (LWIR) cameras as thermal imagers to detect humans at night. These cameras are usually mounted on vehicles as they are too large to be carried by a single warfighter and are too expensive for individual deployment. However, DARPA researchers recently demonstrated a new five-micron pixel LWIR camera that could make this class of camera smaller and less expensive.

2013/04/10 Extreme Miniaturization: Seven Devices, One Chip to Navigate without GPS

Micro-Technology for Positioning, Navigation and Timing (Micro-PNT) program

The U.S. Military relies on the space-based Global Positioning System (GPS) to aid air, land and sea navigation. Like the GPS units in many automobiles today, a simple receiver and some processing power is all that is needed for accurate navigation. But, what if the GPS satellites suddenly became unavailable due to malfunction, enemy action or simple interference, such as driving into a tunnel? Unavailability of GPS would be inconvenient for drivers on the road, but could be disastrous for military missions. DARPA is working to protect against such a scenario, and an emerging solution is much smaller than the navigation instruments in today’s defense systems.

2013/04/03 Distributed Agile Submarine Hunting (DASH) Program Completes Milestones

DARPA’s Distributed Agile Submarine Hunting (DASH) Program

DARPA’s Distributed Agile Submarine Hunting (DASH) Program has tested two complementary prototype systems as part of its Phase 2 development effort. The prototypes demonstrated functional sonar, communications and mobility at deep depths. The successful tests furthered DASH’s goals to apply advances in deep-ocean distributed sonar to help find and track quiet submarines.