DocumentCode
618733
Title
Signal flow graph realization of nth-order current-mode allpass filters using CFTAs
Author
Intawichai, Kritsakon ; Tangsrirat, Worapong
Author_Institution
Fac. of Eng., King Mongkut´s Inst. of Technol. Ladkrabang (KMITL) Ladkrabang, Bangkok, Thailand
fYear
2013
fDate
15-17 May 2013
Firstpage
1
Lastpage
6
Abstract
In this paper, a general synthesis procedure of using the signal flow graph (SFG) technique to realize an nth-order allpass current transfer function with current follower transconductance amplifiers (CFTAs) and grounded capacitors has been presented. The proposed circuit, in general, contains at most n+1 CFTAs and n grounded capacitors, without needing external passive resistors. It has been also show that the design procedure given here is simple structure, convenient tenability, and suitable for integration. Furthermore, the circuit has low sensitivity. PSPICE simulation results which agree very well with the theoretical analysis are also included.
Keywords
all-pass filters; capacitors; current-mode circuits; operational amplifiers; sensitivity; signal flow graphs; CFTA; PSPICE simulation; SFG technique; allpass filter; current follower transconductance amplifiers; grounded capacitors; nth order allpass current transfer function; sensitivity; signal flow graph; Active filters; Capacitors; Filtering theory; Flow graphs; Sensitivity; Transconductance; Transfer functions; Current Follower Transconductance Amplifier (CFTA); Signal Flow Graph (SFG); allpass filter;
fLanguage
English
Publisher
ieee
Conference_Titel
Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2013 10th International Conference on
Conference_Location
Krabi
Print_ISBN
978-1-4799-0546-1
Type
conf
DOI
10.1109/ECTICon.2013.6559519
Filename
6559519
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