12.18.12 -- Designing Power Amplifiers For Broadband Applications
From The Editor
RF Adaptive Pre-Distortion In The PALM Of Your Hand By Paul Kruczkowski, editor
Highly linear performance is an essential requirement for power amplifiers (PAs) applied to amplitude or multicarrier modulation schemes that are often used in video applications. Poor linearity distorts the video signal and results in unwanted power spilling into the adjacent channel, which is referred to as spectral regrowth or “shoulders.” Predistortion techniques that improve PA linearity with reduced back-offs, providing improved efficiency and in some cases allowing the use of lower-power parts to achieve performance goals.
Designing Power Amplifiers For Broadband Applications By Giga-tronics Incorporated
This white paper discusses the challenges in designing power amplifiers for use in broadband applications. Typically, the broader the bandwidth, the less output power. Degradation to the overall linearity and gain flatness can also be a problem. Solutions to these issues, and others, are explored in this paper.
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