Chengcheng Xie
 Write for Microwaves & RF
4 results found for Chengcheng Xie, displaying items 1 - 4

May 2009   [Computer-Aided Engineering]
Hit Minimum SAR With EM Software
Electromagnetic (EM) energy and human health issues have long been a concern with the growing use of portable wireless devices. Because of this, many countries now require compliance with specific absorption rate (SAR) specifications for EM radiation. Fortunately, by using SAR simulation software, designers can estimate SAR performance at the initial stages of product concept and development, saving countless design iterations (and cost) in order to comply...

February   [Components]
GaN Devices Arm Distributed Amplifier
Broadband, high-efficiency power amplifiers serve a wide range of military applications in present and future communications and navigation systems. But amplifier designers are limited in performance by the active devices available to them. Fortunately, the growing availability of wide-bandgap semiconductor devices, such as silicon carbide (SiC) and gallium nitride (GaN) transistors, is clearing the way for broadband, high-efficiency power amplifiers...