This work combines the advantages of two different RF power amplifier (PA) linearization techniques: digital predistortion (DPD) and Cartesian feedback (CFB). Cartesian feedback, an extension of classical continuoustime feedback, is limited by the bandwidth of its loop transfer function; this bandwidth, in turn, puts an upper limit on the bandwidth of the data input. However, this limitation gi...

Heatwole, Craig M. PhD., Purdue University, May 1997. Robust Feedback Control of Flow Induced Structural Radiation of Sound. Major Professors: Dr. Robert J.Bernhard and Dr. Matthew A. Franchek, School of Mechanical Engineering. A significant component of the interior noise of aircraft and automobiles is a result of turbulent boundary layer excitation of the vehicular structure. In this work, ac...

This paper presents a new method to improve the GBW (gain-bandwidth product) on negative feedback amplifiers. The proposed method is based on the introduction of time delay elements in the feedback loop, which can be exploited to retrieve significant bandwidth enhancements. This delayed feedback concept is analyzed, and considerations are presented for first order amplifiers, based on theoretic...

While existing research shows that feedback-based congestion control mechanisms are capable of providing better video quality and higher link utilization for rate-adaptive packet video, there has been relatively little study on how to share network bandwidth among competing rate-adaptive video connections, when feedback control is used in a fully distributed network. This paper addresses this i...

With the introduction of commercially available amplifiers using the current feedback topology by Comlinear Corporation in the early 1980’s, previously unattainable gain and bandwidths in a DC coupled amplifier became easily available to any design engineer. The basic achievement realized by the current feedback topology is to de-couple the signal gain from the loop gain part of the overall tra...

The aim of this study was to examine the effects of two different frequencies of feedback during the process of learning a complex gymnastic skill, the round-off salto backward tucked. Thirty male acrobats participated in the study. They were randomly assigned to two groups: B - bandwidth feedback (n=15) or C - 100% feedback (n=15). Group B was provided with error information regarding the key ...