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A Novel Design Method of Highly Efficient Saturated Power Amplifier Based On Self-Generated Harmonic Currents


A novel design method without requiring the special harmonic termination circuit for a highly efficient power amplifier (PA) is proposed. The proposed PA is driven into saturated operation, from the linear to knee region, by adjusting the only fundamental load, and the saturated operation induces self-generated harmonic currents. The current and voltage waveforms can be shaped easily by the har... » read more

Wireless Security Issues Grow


The Internet, as we know it today, is still mostly an information highway. However, even as we speak, more and more once autonomous, physical objects are becoming intelligent. That includes the obvious ones, such as today’s smart communications devices, to the not so evident ones, such as pacemakers, vehicles, audio/video, and environmental sensors. There are microscopic cameras that are swal... » read more

Return Of The Femtocell


By Cheryl Ajluni Nothing has been left unscathed in the current global economic downturn, and that includes femtocell deployments. It was just last year that femtocells were being proclaimed a 2009 “killer app,” along with LTE and WiMAX. But what was once viewed as the next great thing has instead faced a tough road with more than a few large-scale deployments by major mobile operators be... » read more

Achieving Successful LTE Design and Test


By Cheryl Ajluni In spite of all of its hype, WiMAX is not the only standard causing a stir these days or being called a “killer app.” Another technology that has achieved this illustrious title is Long Term Evolution (LTE), the Third Generation Partnership Project’s (3GPP’s) air interface for wireless access. Granted, WiMAX does have the advantage of a head start in development, test... » read more