Federal prosecutors on Wednesday charged a Houston electronics executive with illegally exporting microelectronics to Russian military and intelligence agencies, as part of a sophisticated network aimed at supplying American high-tech goods for use in Russian weapons systems. The authorities said the items supplied by the executive, Alexander Fishenko, and 10 other people included microprocessors and memory chips that can be used in radar and surveillance systems and detonation triggers. The export of such material is regulated by the federal government for national security reasons, but prosecutors alleged Mr. Fishenko — and several employees of his Houston company, Arc Electronics Inc. — falsified federal export documents and concealed the nature of their work, telling American suppliers that they were not exporters but traffic-light manufacturers. Since 2002, Arc Electronics shipped $50 million worth of microelectronics and other technologies to Russia, with the main port of export being John F. Kennedy International Airport in New York, prosecutors said.