Title :
Current-mode high-frequency wavelet filter based on leap-frog multiple-loop feedback structure
Author :
Wenshan Zhao ; Yichuang Sun
Author_Institution :
Sch. of Electron. & Inf. Eng., Beijing Jiaotong Univ., Beijing, China
Abstract :
A method is proposed to realize high-frequency wavelet transform in analogue filter by employing Gm-C circuits and current-mode leap-frog multiple loop feedback structure in this paper. Also, to enhance the performance, the fully differential Nauta transconductor is utilized as the Gm cell in the design. The Marr wavelet is used as an example, with the design procedure illustrated. Using standard TSMC 0.18μm CMOS process, simulation results show that the center frequency of the Marr wavelet filter ranges from 63MHz to 142MHz by tuning supply voltage. The total power consumption is 69mW at 100MHz.
Keywords :
CMOS integrated circuits; VHF filters; analogue circuits; circuit feedback; circuit simulation; current-mode circuits; integrated circuit design; radiofrequency integrated circuits; wavelet transforms; Gm-C circuit; Marr wavelet filter; analogue filter; current-mode high-frequency wavelet filter; current-mode leap-frog multiple loop feedback structure; frequency 63 MHz to 142 MHz; fully differential autotransconductor; high-frequency wavelet transform; power 69 mW; power consumption; size 0.18 mum; standard TSMC CMOS process; supply voltage tuning;
Conference_Titel :
Circuits and Systems (MWSCAS), 2013 IEEE 56th International Midwest Symposium on
Conference_Location :
Columbus, OH
DOI :
10.1109/MWSCAS.2013.6674622
