Name
Title | ||
|---|---|---|
Analog Implementation of Wavelet Transform in Switched-Current Circuits with High Approximation Precision and Minimum Circuit Coefficients |
Abstract | ||
|---|---|---|
This paper presents a novel procedure for analog implementation of wavelet transform in switched-current (SI) circuits. An improved hybrid PSO---SQP optimization is employed to precisely approximate the impulse response of a filter to the wavelet base function in time domain. The SI first- and second-order section circuits with minimum coefficients are designed based on infinite-impulse-response digital filter technology. Cascode techniques are occupied to reduce the effects of parasitic elements. Based on these SI first- and second-order section circuits, a parallel wavelet circuit structure is presented to synthesize the approximated wavelet base function. By adjusting the switch clock frequency, the wavelets at different scales can be realized. The Gaussian wavelet is selected as an example to illustrate the design procedure. Simulation results demonstrate the feasibility of the proposed procedure for analog wavelet transform in SI circuits. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1007/s00034-014-9750-4 | Circuits, Systems, and Signal Processing |
Keywords | Field | DocType |
Wavelet transform, Wavelet filters, Signal processing, Switched-current circuits | Harmonic wavelet transform,Lifting scheme,Control theory,Second-generation wavelet transform,Electronic engineering,Discrete wavelet transform,Stationary wavelet transform,Wavelet packet decomposition,Mathematics,Wavelet,Wavelet transform | Journal |
Volume | Issue | ISSN |
33 | 8 | 1531-5878 |
Citations | PageRank | References |
0 | 0.34 | 9 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Yaonan Tong | 1 | 0 | 0.34 |
| Yi-gang He | 2 | 339 | 43.21 |
| Hongmin Li | 3 | 0 | 0.34 |
| Wenxin Yu | 4 | 0 | 2.37 |
| LONG Ying | 5 | 30 | 9.46 |