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In this article, a parameter-varying lowpass filter whose transient response has a reduced duration is presented. The compensation of its transient behaviour is done by means of a temporary increase of the filter parameters. The proposed filter is implemented by means of OTAs and capacitors. The resulting circuit is used in the implementation of a fourth-order Chebyshev filter with appreciable ringing...
In this work an adaptive impedance matching scheme for 2.4 GHz wireless communication, based on fuzzy control, is proposed. For that purpose, a two-port passive matching network controlled by a zero-order Takagi-Sugeno-Kang fuzzy controller is used, allowing the system to iterate until the matching point is reached. Several experiments using the fuzzy controller coupled to pi, T, and L impedance matching...
The paper describes the structure of the neural fuzzy filtering; giving an approach of this kind of filters called NFDF. This filters have an adaptive fuzzy inference mechanism in order to deduce the filter answers to select the best parameter values into the knowledge base (KB), actualizing the filter weights to give a good enough answers in natural linguistic sense; this require that all of the...
Each year millions of people around the world are affected by the loss of organs or tissues due to burns, trauma, birth defects, and different diseases. Although recent progress has been made in the area of transplantation, it has major limitations such as: the shortage of donated organs, the difficulties in storage, the high cost and difficult surgical technique and postoperative care requirements...
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