Realization Of Wavelet Transform Based On Filter Banks

Wavelet transform theory has been combined with the integrated circuit engineering in this thesis. Wavelet transform has been realized by analog circuits for frequency domain method. Through a rigorous theoretical analysis and step-by-step practice operations, wavelet transform based on electronic circuits has been completed. The following works are included in thesis:(1)The thesis compares the Functions of wavelet transform and mixed analog-digital circuit continuous wavelet transform.The way to Simulate wavelet transform which use the digital circuit has been found.(2)Formula of fast calculation has been deduced. The software of continuous wavelet transform has been implemented. In the derivation of wavelet transform filter formula designed on the basis of wavelet transform of the bandpass filter.Thesis gets the circuit structure.(3)Thesis use PSpice to Simulate wavelet transform and design the circuit.Three solutions which used to solve the wavelet transform has been found. The structure diagram of continuous wavelet transform has be determined.(4)Thesis focused on the trans-conductor and a current mode circuit,four modes which can promote the transmission characteristics of input linear have been improved and ideal results of linear range extended has been obtained. At the same time the article summarizes above four kinds of patterns and the advantages and disadvantages.(5)Serial and parallel filter group structures have been researched. The thesis designed one 16 channel filter banks and practical integrated circuit. The filter group simulated with Matlab software and PSpice software, and the analog integrated circuit has been simulated with the MOS class computer.In order to test and verify the practicability in engineering, we use the simulation verification of Analog Wavelet Transform for image edge processing.