《国外科技动态》报道:耗电快的移动电话和其他无线设备可能很快就要成为历史。美国威斯康辛大学的电气工程师马振强宣布他已对无线设备中的关键电子元件进行了重新设计,可以增大其发射信号的强度,同时还能节省电池电能。马教授对功率放大器的晶体管进行新的布置,该功率放大器的作用是在将电信号送往天线发射之前进行放大。这种新的设计可以使散热更容易且更均匀。由于减少了过量的发热,避免由此降低功率放大效 “Foreign Science and Technology News” reported: fast consumption of mobile phones and other wireless devices may soon be history. Ma Zhenqiang, an electrical engineer at the University of Wisconsin in the United States, announced that he has redesigned the key electronics in the wireless device to increase the intensity of the transmitted signal while conserving battery power. Professor Ma made a new arrangement of the transistor of a power amplifier whose function is to amplify the electrical signal before it is sent to the antenna. This new design makes heat dissipation easier and more uniform. As a result of the reduction of excess heating, it is therefore avoided to reduce the power amplification