Amplifiers – With semiconductor amplifying device – Including class d amplifier
Reexamination Certificate
2006-05-16
2006-05-16
Choe, Henry (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including class d amplifier
C330S20700P
Reexamination Certificate
active
07046088
ABSTRACT:
A power amplifier for generating a sinusoidal high-frequency signal to be supplied to a load includes a current source adapted to supply a constant electrical current during a portion of a period of a fundamental wave, a first driver circuit that generates a first current wave, and a second driver circuit that generates a second current wave, and a filter network. The first driver circuit includes a first switching element adapted to switch at a fundamental frequency of the fundamental wave between a high ohmic state and a low ohmic state to draw current from the current source, a first capacitance connected in parallel to the first switching element, and a first reactive element to phase shift a first periodic signal. The first driver circuit has a first internal resistance. The second driver includes a second switching element adapted to switch at the fundamental frequency of the fundamental wave between a high ohmic state and a low ohmic state to draw current from the current source, a second capacitance connected in parallel to the second switching element, and a second reactive element to phase shift a second periodic signal. The second driver circuit has a second internal resistance. The filter network includes an oscillating circuit that has a capacitor connected in parallel with the load and a first inductor connected in series with the first internal resistance and a second inductor in series with the second internal resistance. The oscillating circuit is tuned to the fundamental frequency of the fundamental wave, and the oscillating circuit is adapted to perform a resistance transformation from the first and second internal resistances of the driver circuits to the load. At least one resistor is arranged between the first driver circuit and the second driver circuit, and a resistance of the resistor is selected to cause a phase correction between the first current wave and the second current wave.
REFERENCES:
patent: 3919656 (1975-11-01), Sokal et al.
patent: 4717884 (1988-01-01), Mitzlaff
patent: 5187580 (1993-02-01), Porter, Jr. et al.
patent: 5535438 (1996-07-01), Sevic
patent: 5747935 (1998-05-01), Porter et al.
patent: 6046546 (2000-04-01), Porter et al.
patent: 6229392 (2001-05-01), Porter et al.
patent: 6724255 (2004-04-01), Kee et al.
patent: 6762645 (2004-07-01), Grant
patent: 6784732 (2004-08-01), Hajimiri et al.
patent: 39 42 560 (1991-06-01), None
patent: 41 19 738 (1992-12-01), None
patent: 06-334446 (1994-12-01), None
patent: 07-170132 (1995-07-01), None
Everard, J.K.A. and Wilkinson, A.J., “Highly Efficient Class E Amplifiers,”Electronics Division, Colloquium on“Solid-State Power Amplifiers,”Dec. 16, 1991, Digest No. 1991/191, pp. 3/1-3/4.
Albulet, M., and Zulinski, R.E., “Effect of Switch Duty Ratio on the Performance of Class E Circuits,”Proceedings of the 40thMidwest Symposium on Circuits and Systems,Aug. 3-6, 1997, pp. 99-105.
Tan, Q. -S., et al., “Class-E High Efficiency Power Amplifiers,”Proceedings of the 35thMidwest Symposium on Circuits and Systems,Aug. 9-12, 1992, pp. 118-120.
Gudimetla, V.S. Rao, and Kain, A.Z., “Design and Validation of the Load Networks for Broadband Class E Amplifiers using Nonlinear Device Models,”1999 IEEE MTT-S Digest,Jun. 13, 1999, pp. 823-826.
Tsai, K-C., and Gray, P.R., “A 1.9-GHz, 1-W CMOS Class-E Power Amplifier for Wireless Communications,”IEEE Journal of Solid-State Circuits,vol. 34, No. 7, Jul. 1999, pp. 962-970.
Raab, F.H., “Electronically Tunable Class-E Power Amplifiers,”2000 IEEE MTT-S Digest,May 20, 2001, pp. 1513-1516.
Mertens, K.L.R., and Steyaert, M.S.J., “A 700-MHz 1-W Fully Differential CMOS Class-E Power Amplifier,”IEEE Journal of Solid-State Circuits,vol. 37, No. 2, Feb. 2002, pp. 137-141.
Kazimierczuk, M.K., and Bui, X.T., “Class-E Amplifier with an Inductive Impedance Inverter,”IEEE Transactions on Industrial Electronics,vol. 37, No. 2, Apr. 1990, pp. 160-166.
Kawahara, T., and Suetsugu, T., “Class E Frequency Multiplier Driving Class E Amplifier,”Telecommunications Energy Conference, 1997,Oct. 19-23, 1997, pp. 617-621.
Gupta, R., and Allstot, D.J., “Fully Monolithic CMOS RF Power Amplifiers: Recent Advances,”IEEE Communications Magazine,Apr. 1999, pp. 94-98.
Alinkula, P. et al., “Design of Class E Power Amplifier with Nonlinear Parasitic Output Capacitance,”IEEE Transactions on Circuits and Systems—II: Analog and Digital Signal Processing,vol. 46, No. 2, Feb. 1999, pp. 114-119.
Chudobiak, M.J., “The Use of Parasitic Nonlinear Capacitors in Class E Amplifiers,”IEEE Transactions on Circuits and Systems—I: Fundamental Theories and Applications,vol. 41, No. 12, Dec. 1994, pp. 941-944.
“RFSuite™ Where Power Meets Intelligence,” Product Brochure, Advanced Energy Industries, Inc., 2000, 4 pages.
“RFG and RFXII Series 13.56 MHz Power Supplies with 1250 W Output,” Product Brochure, Advanced Energy Industries, Inc., 3 pages.
“RFG 3000 W, 13.56 MHz, CE Power Supplies,” Product Brochure, Advanced Energy Industries, Inc., 2 pages.
“APEX™ RF Power Delivery: 13.56 MHz, 1.5KW to 10 kW Power Delivery Systems,” Product Brochure, Advanced Energy Industries, Inc., 2000, 4 pages.
Raab, F.H., “Analysis of Class-E Power Amplifiers” Green mountain Radio Research Company Rev. D Feb. 24, 1989, Seminar Notebook GMRR RN82-36D, pp. 1-12.
Sokal, N.O., and Redl, R., “Power Transistor Output Port Model,”RF Design,Jun. 1987, p.17-22.
Herbert L. Krauss et al., “Class E Amplification,” Chapter 14-3,Solid State Radio Engineering1980, p. 448-453.
Fish & Richardson P.C.
Huettinger Elektronik GmbH & Co.
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