OTA-based high-order filters

Details OTA-based high-order filters OTA-based high-order filters

2006-05-19

2009-02-24

Kik, Phallaka (Department: 2825)

Computer-aided design and analysis of circuits and semiconductor

Nanotechnology related integrated circuit design

C716S030000, C716S030000

Reexamination Certificate

active

07496865

ABSTRACT:
Nth-order OTA-C (Operational Transconductance Amplifiers and Capacitors) filter structures are realized by using the analytical synthesis method to achieve the following three important criteria simultaneously:filters use just n grounded capacitors, each of which is located at each of just n nodes in the realized circuit, because they use smaller area in the IC, and they can absorb equivalent shunt capacitive parasites;filters employ only single-ended-input OTAs to overcome the feed-through effects due to finite input parasitic capacitances associated with double-input OTAs to replace the same positions of the n given capacitors; andfilters have the least number-of components (passive and active) for a given order to reduce power consumption, chip areas, and noise.Both the first and the second criteria lead to the minimum parasitic distortion and make the most precise output signals. And the third criterion produces the cheapest chip.

REFERENCES:
patent: 4543534 (1985-09-01), Temes et al.
patent: 5384502 (1995-01-01), Volk
patent: 5475338 (1995-12-01), Yamaguchi
patent: 5736895 (1998-04-01), Yu et al.
patent: 5767724 (1998-06-01), Steglich
patent: 6002299 (1999-12-01), Thomsen
patent: 6144234 (2000-11-01), Nakamura
patent: 6556072 (2003-04-01), Nicollini et al.
patent: 6559786 (2003-05-01), Groiss et al.
patent: 6901091 (2005-05-01), Schrodinger
patent: 7325210 (2008-01-01), Rao et al.
patent: 7330279 (2008-02-01), Vuong et al.
patent: 2001/0032508 (2001-10-01), Lemkin et al.
patent: 2002/0035462 (2002-03-01), Kidera et al.
patent: 2002/0070888 (2002-06-01), Groiss et al.
patent: 2002/0114365 (2002-08-01), Gilliland et al.
patent: 2002/0140440 (2002-10-01), Haase
patent: 2004/0017574 (2004-01-01), Vuong et al.
patent: 2004/0081212 (2004-04-01), Schrodinger
patent: 2005/0168274 (2005-08-01), Kimura
patent: 2006/0206845 (2006-09-01), Rao et al.
patent: 2007/0101310 (2007-05-01), Stirniman et al.
patent: 2008/0151269 (2008-06-01), Vuong et al.
patent: 02202720 (1990-08-01), None
Abuelma'Atti et al., “Digitally Programmable Active-C OTA-Based Oscillator”, IEEE Transactions on Instrumentation and Measurement, vol. 37, No. 2, Jun. 1988, pp. 320-322.
Hasler et al., “Elimination of Parasitic Capacitances in Swithced-Capacitor Circuits by Circuit Transformations”, IEEE Transactions on Circuits and Systems, vol. CAS-32, No. 5, May 1985, pp. 467-475.
Horn et al., “Active RC Single-Opamp Design of Driving-Point Impedances”, IEEE Transactions on Circuits and Systems, vol. CAS-26, No. 1, Feb. 1979, pp. 22-30.
Hwang et al., “High-Frequency Linear Transformation Elliptic Filters Employing Minimum Number of OTAs”, Electronics Letters, vol. 31, No. 18, Aug. 31, 1995, pp. 1562-1564.
Malvar, “Active-RC Variable Equalizers with Minimum Number of Operational Amplifiers”, IEEE Transactions on Circuits and Systems, vol. CAS-30, No. 7, Jul. 1983, pp. 496-500.
Rathore, “Minimal Realization of RC Voltage Transfer Functions by Unsymmetrical Lattice Networks,” IEEE Transactions on Circuits and Systems, vol. CAS-22, No. 4, Apr. 1975, pp. 313-316.
Shah et al., “Design of KHN Biquad Using Operational Transconductance Amplifier”, 2002 45th Midwest Symposium on Circuits and Systems, vol. 1, Aug. 4-7, 2002, pp. 48-51.
Silva-Martinez et al., “Analogue OTA Multiplier Without Input Voltage Swing Restrictions, and Temperature-Compensated”, Electronics Letters, vol. 22, No. 11, May 1986, pp. 599-600.
M. A. Tan and R. Schaumann, “Simulating general-parameter LC-ladder filters for monolithic realizations with only transconductance elements and grounded capacitors”, IEEE Trans. Circuits Syst., vol. 36, No. 2, pp. 299-3-7, Feb. 1989.
P.V. Ananda Mohan, “Novel OTA-C filter structures using grounded capacitors”, Proc. ISCAS, pp. 1347-1350, 1991.
Y. Sun, and J.K. Fidler, “OTA-C realization of general high-order transfer functions”, Electron. Lett., vol. 29, No. 12, pp. 1057-1058, 1993.
Y. S. Hwang, S.I. Liu, D.S. Wu, and Y. P. Wu, “Table-based linear transformation filters using OTA-C techniques”, Electron. Lett., vol. 30, No. 24, pp. 2021-2022, 1994.
J. Ramirez-Angulo, and E. Sanchez-Sinencio, High frequency compensated current-mode ladder filters suing multiple output OTAs', IEEE Trans Circuits Syst. II, vol. 41, No. 9, pp. 581-586, 1994.
T. Tsukutani, M. Higashimura, M. Ishiada, S. Tsuiki, and Y. Fukui, “A general class of current-mode high-order OTA-C filters”, Int. J. Electron., vol. 81, No. 6, pp. 663-669, Jun. 1996.
Y. Sun, and J. K. Fidler, “Synthesis and performance analysis of universal minimum component integrator-based IFLF OTA-grounded capacitor filter”, IEE Proc.-Circuits Devices Syst., vol. 14, No. 2, pp. 107-114, 1996.
M. Moniri, and B. Al-Hashimi, “Systematic generation of current-mode dual-output OTA filters using a building block approach”, Int. J. Electron., vol. 83, No. 1, pp. 37-48, 1997.
Y. Sun, and J. K. Fidler, “Structure generation and design of multiple loop feedback OTA-grounded capacitor filters”, IEEE Trans. Circuits Syst.-I, vol. 44, No. 1, pp. 1-11, 1997.
J. Wu, and E. I. El-Masry, “Design of current-mode ladder filters using coupled-biquads”, IEEE Trans. Circuits Syst.-II, vol. 45, No. 11, pp. 1445-1454, 1998.
Y. Sun, “OTA-C filter design using inductor substitution and Bruton transformation methods”, Electron. Lett., vol. 34, No. 22, pp. 2082-2083, 1998.
R. Schaumann, “Simulating lossless ladders with transconductance circuits”, IEEE Trans. Circuits Syst. II, vol. 45, pp. 407-410, 1998.
C. A. Barbargires, “Explicit design of general high-order FLF OTA-C filters”, Electron. Lett., vol. 35, No. 16, pp. 1289-1290 1999.
Y. Sun and J. K. Fidler, “Current-mode OTA-C realization of arbitrary filter characteristics”, Electron. Lett., vol. 32, No. 13, pp. 1181-1182, Jun. 1996.
C. M. Chang, B. M. Al-Hashimi, and J. N. Ross, “Unified active filter biquad structures”, IEE Proc.-Circuits, Devices, and Systems, vol. 151, No. 4, pp. 273-277, Aug. 2004.
S. Szczepanski, A. Wyszynski, and R. Schaumann, “Highly linear voltage-controlled CMOS transconductors”, IEEE Trans. Circuits & Syst.-I, vol. 40, No. 4, pp. 258-262, Apr. 1993.
C. M. Chang, and B. M. Al-Hashimi, “Analytical synthesis of current-mode high-order OTA-C filters”, IEEE Trans. Circuits & Syst.-I, vol. 50, No. 9, pp. 1188-1192, Sep. 2003.
C. M. Chang, “Voltage-Mode High-Order OTA-Only-Without-C Low-Pass (from 215M to 705M Hz) and Band-Pass (from 214M to 724M Hz) Filter Structure”, Proceedings of IEEE: International Symposium on Circuits and Systems (ISCAS), Kobe, Japan, May 23-26, 2005, accepted for presentation and publication, pp. 5950-5953.
C. M. Chang, B. M. Al-Hashimi, Y. Sun, and J. N. Ross, “New high-order filter structures using single-ended-input OTAs and grounded capacitors”, IEEE Trans. Circuits & Syst.-I, vol. 51, No. 9, pp. 458-463, Sep. 2004.

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