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Transactions: WSEAS TRANSACTIONS ON CIRCUITS AND SYSTEMS
Transactions ID Number: 52-722
Full Name: Chun-Ming Chang
Position: Professor
Age: ON
Sex: Male
Address: 18-1, Chung Yuan New Village, Chung-Li, Taiwan 32023, R. O. China
Country: TAIWAN
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E-mail address: chunming@dec.ee.cycu.edu.tw
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Title of the Paper: Generation of Voltage-Mode OTRA-Based Multifunction Biquad Filter
Authors as they appear in the Paper: Chun-Ming Chang, Ying-Tsai Lin, Chih-Kuei Hsu, Chun-Li Hou*, and Jiun-Wei Horng*
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Number of paper pages: 10
Abstract: A new OTRA-R-C low-pass, band-pass, and high-pass biquad filter without a capacitor in a feedback loop is generated using the realization of a new analytical synthesis method. Using the replacement of a resistor with a set of two parallel MOS transistors, a new OTRA-MOS-C one is also presented. The difference between finite trans-resistance and infinite trans-resistance makes output signals with rather errors. Based upon sensitivity tendency and variation amount, appropriately varying a resistor by a small difference may lead to more precise output responses. H-Spice simulations validate (i) the OTRA-R-C biquad is a little bit accurate than the OTRA-MOS-C one, (ii) the new high-pass biquad filter suffers from a distortion at high frequencies due to non-ideal trans-resistance frequency functions, (iii) the new band-pass biquad achieves very low sensitivities like the well-known doubly terminated LC ladder circuits, and (iv) several null group sensitivities exist in !
the new biquad filter.
Keywords: Active filters, analog circuit design, continuous-time filters, low-pass filters, band-pass filters, high-pass filters, operational trans-resistance amplifiers
EXTENSION of the file: .pdf
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