Antenna Technology

July 11, 2014
By Robert K. Ackerman

When the U.S. Air Force needed a new secure satellite communications system, one company was able to show up at the starting line with an 80 percent solution based on an existing product line serving the Army and the Navy.

August 1, 2013
By Max Cacas
The symposium, “Novel Methods for Information Sharing in Large-scale Mobile Ad Hoc Networks,” will be held Aug. 7-8, at the conference center in DARPA’s new headquarters in Arlington, Virginia.

 

Scientists at the U.S. Defense Department’s top research and development agency are seeking the best new ideas to provide a larger-scale mobile network to support an increasing array of bandwidth-hungry mobile computing devices for warfighters.

The Defense Advanced Research Projects Agency (DARPA) has issued a Request for Information (RFI) for new technical approaches that would expand the number and capacity of Mobile Ad Hoc Networks (MANETs) nodes available in the field.

May 1, 2013
By Arthur Allen and Zdenka Willis
A U.S. Coast Guard helicopter delivers passengers from the sailing ship Bounty after the ship foundered during superstorm Sandy last October.

The synergy between operational planning and radar sensing provides enhanced search and rescue capabilities.

The U.S. Coast Guard is combining high-frequency coastal radar data with traditional oceanographic and geographic information to improve its chances of rescuing people in distress on the high seas. By merging these different sources of data, the Coast Guard enhances its search abilities while also providing better weather prediction for both its search and rescue teams and an endangered public in coastal areas.

April 1, 2013
By Robert K. Ackerman
The U.S. Army is striving to develop a multifunction electronic warfare, or MFEW, system that will provide a defensive electronic attack capability.

Melding the disciplines of spectrum combat will enable greater flexibility and more capabilities.

The growth in battlefield electronics has spurred a corresponding growth in electronic warfare. In the same manner that innovative technologies have spawned new capabilities, electronic warfare is becoming more complex as planners look to incorporate new systems into the battlespace.

April 1, 2013
By George I. Seffers
Future U.S. Army vehicles may be designed to carry common components that will decrease the size, weight and power consumption of electromagnetic systems while reducing costs and improving interoperability.

An upcoming demonstration could lead to a giant leap in common electromagnetic components.

February 15, 2013
By Robert K. Ackerman

The latest generation Tracking and Data Relay Satellite, TDRS-K, updates existing technology with an eye to the future. New electronics and better power management will help extend the TDRS constellation for at least another decade, but NASA already is looking ahead to major changes in the system’s capabilities that would define the next-generation TDRS.

December 1, 2012
By Robert K. Ackerman
This experimental antenna developed by LGS Innovations mimics a spherical antenna by arraying circuit boards bearing printed structures. Without having a series of electrical connections, the boards nonetheless resonate as if the construct was a spherical antenna.

Scientists bend, not break, the laws of physics.

Faced with limitations imposed by physics, laboratory researchers are generating antenna innovations by tweaking constructs to change the rules of the antenna game. Their efforts do not seek to violate long-held mathematical theorems or laws of physics. Instead, they are working to find lawful ways of working around limitations that long have inhibited the development of antennas that would suit user needs with fewer tradeoffs.

December 1, 2012
By Max Cacas
The Argos multiple-antenna array prototype combines 64 standard cellphone antennas into one base station that can send data directly to 16 different devices at the same time.

Beamforming could help increase capacity of cellphone networks 
to meet the demands of data-hungry smartphones and tablets.

December 1, 2012
By Rita Boland

Academic investigations are establishing the future
 of transmission technology for troops and civilians.

Improving antennas for defense or commercial purposes has as much to do with mathematics as it does with hardware. Researchers in the Wireless Networking and Communications Group at the University of Texas at Austin are exploring algorithms along with other properties that should improve communications systems on the battlefield.

December 1, 2012
By George I. Seffers
Future armored vehicles could include antennas integrated into the armor coating and other technologies designed to rid the service of whip antennas.

U.S. Army officials

 seek to replace the

 commonly used 
device.

December 1, 2012
By George I. Seffers
Three 100-foot towers at Wright-Patterson Air Force Base, Ohio, provide the Air Force Research Laboratory Sensors Directorate with new capabilities to perform radar research. The actual radars atop each tower were relocated from Rome, N.Y., as part of the 2005 Base Realignment and Closure.

U.S. Air Force researchers use 3-D printers and
 other cutting-edge concepts 
to create
 the next 
innovations.

There is no Moore’s Law for antennas because size reduction and performance improvement will always be subject to the limitations imposed by electromagnetic physics and material properties. But steady advances in computer technologies, such as electromagnetic modeling and simulation and 3-D printing, enable antenna technology researchers to push the limits of possibility on behalf of the warfighters.

March 2010
By Rita Boland, SIGNAL Magazine

Researchers in the United Kingdom have completed a preliminary investigation into the use of millimeter-wave, body-worn antenna arrays to create mobile ad hoc networking for dismounted combat soldiers. The effort proved the feasibility and benefits of such a network as well as provided a platform for future study of the concept. Personnel involved in the experiments focused their work on the 60-GHz band, which offers the high amount of bandwidth necessary for troops to exchange large quantities of information on the battlefield. The short range of the communications enhances covertness by reducing the chance for enemies to exploit transmissions, and it also reduces interference.

March 2010
By Maryann Lawlor, SIGNAL Magazine

Digital natives probably don’t remember how home TV viewers had to manually adjust “rabbit ears”—those odd-shaped dipole antennas that sat atop a TV sprouting wires and sporting any number of dials to turn in the hope of improving the picture. But when a recently uncovered use for an alloy comprising gallium and indium becomes widespread as the go-to material for antennas, the newest antennas may be able to adjust themselves without a human hand. Although only in the second stage of research, the combination of these well-known materials already has demonstrated that when bent and twisted, antennas return to their original shape; when cut with a razor, they heal.

March 2010
By Henry S. Kenyon, SIGNAL Magazine

Researchers are pursuing advances in radio antenna technology to build communication equipment into body armor and to offer more capable and efficient methods for countering roadside bombs. Virtual modeling techniques incorporating developments in materials science currently are testing and verifying prototype equipment before physical testing begins. This combination of cutting-edge research and simulation has rapidly matured these antenna technologies and prepared them for initial operational evaluations.