Antenna (IMAGE) U.S. Army Research Laboratory Caption U.S. Army researchers develop an active matching technique to equip robotic ground vehicles with powerful, miniature antennas. Credit U.S. Army photo Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.