現任美國SDS (Spatial Digital Systems)首席執行長，
在90’s年代初期，章博士曾於台灣國家太空計畫室 (現國家太空中心) 擔任系統工程處首任處長。
章博士擁有九十多項專利；曾於1989年以合成孔徑輻射計(synthetic aperture radiometers)獲頒Hughes創新獎，2000年以其在80’s年代初期所發明的數位波束天線獲Hyland Award，2001年再度以UAVs通訊技術獲頒Chairman Patent Award。
Dr. Donald Chang is the CEO of Spatial Digital Systems (SDS)， formed in 2002 to develop smart antenna technologies that greatly enhance wireless communications. SDS intellectual property (IP) portfolios cover 5 categories of smart antennas; (1) Imaging radar via spatial frequency components， (2) Smart satellite ground terminals， (3) Wavefront Multiplexing IDe-multiplexing (WF 1\fluxing I
Demuxing)， (4) Orthogonal beams (OB) technologies， and (5) Quiet-zones generations; interference mitigation via injection-for-cancellation techniques.
Before retired from Hughes Electronics Company in 2002 as a Chief Technologist after ....，25 years of service， he participated in many commercial and military spacecraft designs， and was responsible for a multitude of advanced communications satellite systems and spacecraft antenna initiatives. He is
an expert on communications satellites; microwave remote sensing instruments， especially in passive synthetic aperture radiometric techniques; and associated technologies. He was the one bringing the digital beam forming (DBF) techniques into satellite communications in early 1980s. As a result of
successful DBF developments for nearly a decade， new product lines of advanced mobile communications satellites both in GEO and MEO orbits become possible. Dr. Chang has more than 40 technical papers published on microwave communications and remote sensing fields. He holds> 95 U.S. patents and> 70 patents pending on smart antennas， advanced mobile communications，
communications via stratospheric platform， space-based positioning and air traffic management
techniques， and satellite constellation and spacecraft designs for global mobile applications. Dr.
Chang was awarded many times with high honors in Hughes. In 1989， he won the Invention Award for his significant invention in passive microwave radiometry and array antennas using synthesized aperture techniques. In 2000， he got the Hyland award (the highest honor in Hughes) for his
significant contribution in DBF technology. In 2001， he was honored again the Chairman Patent award for wireless Internet access using stratospheric platforms.
Dr. Chang became the first Division manager of the System Engineering in the National Space Program Office (I\ISPO) for Republic of China in Taiwan when he went back to Taiwan for a new space initiative from 1992 to early 1995 while taking a leave of absence from Hughes Aircraft Company. Many of the early technical planning and System Engineering practices and operations in |\ISPO were heavily impacted by him.
Dr. Chang earned his Ph.D. and MSEE from Stanford University in 1978. He completed his MSEE and BSEE at National Cheng-Kung University， Tainan， Taiwan， in 1972 and 1969， respectively. He also graduated from the Strategic Leadership Institution， Anderson School， UCLA in the summer of 2000.