IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0749260
(2010-03-29)
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등록번호 |
US-8405456
(2013-03-26)
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발명자
/ 주소 |
- Drogi, Serge Francois
- Tomasz, Martin
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
7 인용 특허 :
48 |
초록
▼
A power supply system includes a high-speed power supply providing a first output, operating in conjunction with an externally supplied DC source or low frequency power supply which provides a second output. A frequency blocking power combiner circuit combines the first and second outputs to generat
A power supply system includes a high-speed power supply providing a first output, operating in conjunction with an externally supplied DC source or low frequency power supply which provides a second output. A frequency blocking power combiner circuit combines the first and second outputs to generate a third output in order to drive a load, while providing frequency-selective isolation between the first and second outputs. A feedback circuit coupled to the combined, third output compares this combined, third output with a predetermined control signal and generates a control signal for controlling the high-speed power supply, based on a difference between the third output and the predetermined control signal. The feedback circuit does not control the DC source or the low frequency power supply, but controls only the high-speed power supply.
대표청구항
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1. A power supply system, comprising: a power source configured to generate first output power in a first frequency range;a power supply configured to generate second output power in a second frequency range, a lower end of the second frequency range being at least higher than a lower end of the fir
1. A power supply system, comprising: a power source configured to generate first output power in a first frequency range;a power supply configured to generate second output power in a second frequency range, a lower end of the second frequency range being at least higher than a lower end of the first frequency range;a power combiner circuit configured to combine the first output power with the second output power to generate combined, third output power while providing frequency-selective isolation between the first output power and the second output power; anda feedback circuit coupled to receive the combined, third output power through a feedback loop, the feedback circuit configured to compare the third output power with a predetermined control signal and generate a power supply control signal for controlling the power supply based on a difference between the third output power and the predetermined control signal, the power supply control signal not controlling the power source. 2. The power supply system of claim 1, wherein the power source is a DC (direct current) power source. 3. The power supply system of claim 1, wherein the power source is another power supply configured to generate the first output power in the first frequency range. 4. The power supply system of claim 1, wherein the power supply is a push-pull regulator. 5. The power supply system of claim 1, wherein the feedback circuit includes an error amplifier configured to compare the third output power with the predetermined control signal to generate the power supply control signal. 6. The power supply system of claim 5, further comprising a loop compensation circuit coupled in series between the error amplifier and the power supply, the loop compensation circuit configured to provide phase compensation or gain compensation to the power supply control signal. 7. The power supply system of claim 1, further comprising a DC blocking circuit coupled in series with the predetermined control signal, the DC blocking circuit configured to block DC components of the predetermined control signal from entering the feedback circuit. 8. The power supply system of claim 7, wherein the DC blocking circuit comprises a capacitor coupled in series with the predetermined control signal. 9. The power supply system of claim 1, wherein the power combiner circuit includes an inductor coupled in series with the first output power from the power source. 10. The power supply system of claim 1, wherein the power combiner circuit includes a capacitor coupled in series with the second output power from the power supply. 11. The power supply system of claim 1, wherein the power combiner circuit includes a transformer including a primary winding with a first node and a second node and a secondary winding with a third node and a fourth node, the first node coupled to receive the first output power, the second node coupled to a load, the third node coupled to ground, and the fourth node coupled to receive the second output power. 12. The power supply system of claim 11, wherein the power combiner circuit further includes a capacitor coupled to the power supply and the fourth node of the transformer on one end and the load on another end, the capacitor reducing effects of a primary leakage inductance of the transformer. 13. The power supply system of claim 12, wherein the power combiner circuit further includes a resistor coupled in series between the capacitor and the load, the resistance flattening a frequency response created by the capacitor. 14. The power supply system of claim 1, wherein the power supply control signal is configured to decrease the second output power from the power supply if the third output power is higher than the predetermined control signal, and increase the second output power from the power supply if the third output power is lower than the predetermined control signal. 15. A power supply system for providing power to a radio frequency (RF) power amplifier, comprising: a power source configured to generate first output power in a first frequency range;a power supply configured to generate second output power in a second frequency range, a lower end of the second frequency range being at least higher than a lower end of the first frequency range;a power combiner circuit configured to combine the first output power with the second output power to generate combined, third output power for providing power to the RF power amplifier, the RF power amplifier receiving and amplifying a RF input signal to generate a RF output signal under control of the third output power; anda feedback circuit coupled to receive the RF output signal through a feedback loop, the feedback circuit configured to compare the RF output signal with a predetermined control signal and generate a power supply control signal for controlling the power supply based on a difference between the RF output signal and the predetermined control signal, the power supply control signal not controlling the power source. 16. The power supply system of claim 15, further comprising a DC blocking circuit coupled in series with the predetermined control signal, the DC blocking circuit configured to block DC components of the predetermined control signal from entering the feedback circuit. 17. The power supply system of claim 15, wherein the power combiner circuit includes an inductor coupled in series with the first output power from the power source. 18. The power supply system of claim 15, wherein the power combiner circuit includes a capacitor coupled in series with the second output power from the power supply. 19. The power supply system of claim 15, wherein the power combiner circuit includes a transformer including a primary winding with a first node and a second node and a secondary winding with a third node and a fourth node, the first node coupled to receive the first output power, the second node coupled to a load, the third node coupled to ground, and the fourth node coupled to receive the second output power. 20. The power supply system of claim 15, wherein the power supply control signal is configured to decrease the second output power from the power supply if the RF output signal is higher than the predetermined control signal, and increase the second output power from the power supply if the RF output signal is lower than the predetermined control signal. 21. The power supply system of claim 15, wherein the first output power from the power source is adjusted responsive to an average power output by the RF power amplifier. 22. A power amplifier controller circuit for controlling a power amplifier, the power amplifier coupled to receive and amplify a radio frequency (RF) input signal to generate an RF output signal, the power amplifier controller circuit comprising: an amplitude control loop configured to determine an amplitude correction signal indicative of an amplitude difference between an amplitude of the input signal to the power amplifier and an attenuated amplitude of the output signal of the power amplifier; anda power supply system including: a power source configured to generate first output power in a first frequency range;a power supply configured to generate second output power in a second frequency range, a lower end of the second frequency range being at least higher than a lower end of the first frequency range;a power combiner circuit configured to combine the first output power with the second output power to generate combined, third output power while providing frequency-selective isolation between the first output power and the second output power, the third output power providing power to the power amplifier; anda feedback circuit coupled to receive the combined, third output power through a feedback loop, the feedback circuit configured to compare the third output power with the amplitude correction signal and generate a power supply control signal for controlling the power supply based on a difference between the third output power and the amplitude correction signal, the power supply control signal not controlling the power source. 23. The power amplifier controller circuit of claim 22, wherein the first output power from the power source is adjusted responsive to an average power output by the power amplifier. 24. The power amplifier controller circuit of claim 22, further comprising a muting circuit configured to reduce or mute the amplitude correction signal responsive to an amplitude of the RF input signal being lower than a predetermined threshold. 25. The power amplifier controller circuit of claim 22, further comprising a muting circuit configured to shut down the power supply system responsive to an amplitude of the RF input signal being lower than a predetermined threshold. 26. The power amplifier controller circuit of claim 22, further comprising a muting circuit configured to reduce the amplitude correction signal responsive to distortion in the RF output signal being lower than a predetermined threshold. 27. The power amplifier controller circuit of claim 22, wherein the amplitude control loop includes a variable gain amplifier configured to adjust the amplitude of the RF input signal to the power amplifier based upon a gain control signal derived from the amplitude correction signal. 28. The power amplifier controller circuit of claim 22, further comprising a phase control loop configured to determine a phase error signal indicative of a phase difference between phases of the RF input signal to the power amplifier and the RF output signal of the power amplifier and adjust the phase of the RF input signal to the power amplifier to reduce phase distortion generated by the power amplifier.
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