SFG realization of wavelet filter using switched-current circuits

Author

Zhao, Wenshan ; He, Yigang ; Sun, Yichuang

Author_Institution

Coll. of Electr. & Inf. Eng., Hunan Univ., Changsha, China

fYear

2009

fDate

20-23 Oct. 2009

Firstpage

37

Lastpage

40

Abstract

A signal flow graph method for analogue implementation of wavelet transform using switched-current circuits is proposed in which the wavelet transform is synthesized by a bank of switched-current bandpass filters whose impulse responses are the mother wavelet and its dilations. To facilitate the implementation of arbitrary wavelet function, the proposed approach employs the signal flow graph methodology to design the wavelet filter. The first derivative of Gaussian wavelet is used as an example in this paper to illustrate design details. Simulation results show the feasibility of the proposed method.

Keywords

Gaussian processes; band-pass filters; signal flow graphs; switched current circuits; wavelet transforms; Gaussian wavelet; signal flow graph method; switched-current bandpass filter; switched-current circuit; wavelet filter; wavelet transform; Band pass filters; Circuit synthesis; Flow graphs; Function approximation; Helium; Signal design; Signal processing; Sun; Switching circuits; Wavelet transforms; SFG; Switched-current; Wavelet transform;

fLanguage

English

Publisher

ieee

Conference_Titel

ASIC, 2009. ASICON '09. IEEE 8th International Conference on

Conference_Location

Changsha, Hunan

Print_ISBN

978-1-4244-3868-6

Electronic_ISBN

978-1-4244-3870-9

Type

conf

DOI

10.1109/ASICON.2009.5351613

Filename

5351613