Electricity: power supply or regulation systems – In shunt with source or load – Using choke and switch across source
Reexamination Certificate
2005-07-27
2009-10-13
Vu, Bao Q (Department: 2838)
Electricity: power supply or regulation systems
In shunt with source or load
Using choke and switch across source
C323S282000, C323S284000
Reexamination Certificate
active
07602155
ABSTRACT:
A power supply for providing a modulated output voltage to a load is disclosed. According to various embodiments, the power supply comprises a plurality of parallel-connected switch-mode power modules and a controller. The controller is connected to each of the power modules and is for controlling the duty cycles of the respective power modules such that the power modules have a common duty cycle in steady state, but in a phase-shifted or “interleaved” manner. In addition, the controller is for controlling the output voltage of the power converter by controlling the ratio of power modules in the forward state at a time to the total number of power modules. In this way, by providing a sufficiently large number of power modules, arbitrarily low output voltage amplitudes and intra-level oscillations can be achieved. Further, the rate of modulation of the output voltage can exceed the switching frequency (f=1/T, where T is the switching period) of the power modules. An rf power amplifier system including such a power supply is also disclosed.
REFERENCES:
patent: 3600667 (1971-08-01), Wynn
patent: 3970953 (1976-07-01), Walker et al.
patent: 4378530 (1983-03-01), Garde
patent: 4502152 (1985-02-01), Sinclair
patent: 4516080 (1985-05-01), Garde
patent: 5682303 (1997-10-01), Goad
patent: 5905407 (1999-05-01), Midya
patent: 6009000 (1999-12-01), Siri
patent: 6121761 (2000-09-01), Herbert
patent: 6215290 (2001-04-01), Yang et al.
patent: 6281666 (2001-08-01), Tressler et al.
patent: 6292378 (2001-09-01), Brooks et al.
patent: 6300826 (2001-10-01), Mathe et al.
patent: 6346798 (2002-02-01), Passoni et al.
patent: 6362607 (2002-03-01), Wickersham et al.
patent: 6362608 (2002-03-01), Ashburn et al.
patent: 6404175 (2002-06-01), Yang et al.
patent: 6424129 (2002-07-01), Lethellier
patent: 6449174 (2002-09-01), Elbanhawy
patent: 6534962 (2003-03-01), Lee
patent: 6583664 (2003-06-01), Mathe et al.
patent: 6642631 (2003-11-01), Clavette
patent: 6650096 (2003-11-01), Lee
patent: 6661210 (2003-12-01), Kimball et al.
patent: 6674274 (2004-01-01), Hobrecht et al.
patent: 6833760 (2004-12-01), Aude
patent: 6850045 (2005-02-01), Muratov et al.
patent: 7058373 (2006-06-01), Grigore
patent: 7071662 (2006-07-01), Hsu et al.
patent: 7109689 (2006-09-01), Schneider
patent: 7126315 (2006-10-01), Seo
patent: 7190150 (2007-03-01), Chen et al.
patent: 2002/0135338 (2002-09-01), Hobrecht et al.
Asbeck et al., “Synergistic Design of DSP and Power Amplifiers for Wireless Communications,” IEEE Trans. on Microwave Theory and Techniques, vol. 49, No. 11, Nov. 2001.
Sahu et al., “System-Level Requirements of DC-DC Converters for Dynamic Power Supplies for Power Amplifiers,” 2002 IEEE Asia-Pacific Conference on ASICs (2002).
Sahu et al., “High-Efficiency Linear RF Power Amplifier With a Power-Tracking Dynamically Adaptive Buck-Boost Supply,” IEEE Trans. on Microwave Theory and Techniques, vol. 52, No. 1, Jan. 2004.
Yundt, George B., “Series Parallel Connected Composite Amplifiers,” Jun. 1983, Master Thesis, Massachusetts Institute of Technology, pp. 1-359.
Kashiwagi, Seigoh, “A High-Efficiency Audio Power Amplifier Using a Self-Oscillating Switching Regulator,” IEEE Transactions on Industry Applications, Jul./Aug. 1985, vol. IA-21, No. 4, pp. 906-911.
Ertl et al., “Basic Considerations and Topologies of Switched-Mode Assisted Linear Power Amplifiers,” Proc. of the 11th Applied Power Electronics Conference, IEEE, 1996, pp. 207-213.
van der Zee et al., “A Power Efficient Audio Amplifier Combining Switching and Linear Techniques,” Proc. of the 24th European Solid-State Circuits Conference, 1998, pp. 288-291.
Yousefzadeh et al., “Band Separation and Efficiency Optimization in Linear-Assisted Switching Power Amplifiers,” Proc. of the 37th Power Electronics Specialists Conference, 2006, 7 pages.
Zhou et al., “Switch-Linear Hybrid Power Conversion (I)—The Topologies Based on Source Follower,” IEEE, 2006, 7 pages.
Hu et al., “Switch-Linear-Hybrid Power Converter and Its Application Prospect in Industry,” IEEE, 2006, pp. 1009-1014.
Artesyn Technologies, Inc.
K&L Gates LLP
Vu Bao Q
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