MULTI-MODE/MULTI-BAND POWER MANAGEMENT SYSTEM
First Claim
1. A power management system for a radio frequency (RF) power amplifier (PA) load, comprising:
- a first switching power supply adapted to provide a relatively constant DC voltage to the RF PA load, the first switching power supply having an output terminal for coupling a first output filter to the first switching power supply;
an electronic switch for selectively coupling the first output filter between the first switching power supply and the RF PA load;
a second switching power supply adapted to provide a dynamic DC voltage to the RF PA load, wherein the dynamic DC voltage is amplitude modulated in synchronization with the amplitude of a transmit signal that is to be amplified by the RF PA load, the second switching power supply having an output terminal for coupling a second output filter between the second switching power supply and the RF PA load; and
a control system that is adapted to close the electronic switch to supply the relatively constant DC voltage in addition to the dynamic DC voltage to the RF PA load in a first mode and to open the electronic switch wherein the relatively constant DC voltage is not supplied to the RF PA load in a second mode.
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Accused Products
Abstract
A power management system for a radio frequency (RF) power amplifier (PA) load is disclosed. The power management system includes a first switching power supply that is adapted to output a relatively constant voltage, an electronic switch for selectively coupling the first switching power supply to the RF PA load, and a second switching power that is adapted to output a dynamic DC voltage to the RF PA load. The power management system further includes a control system that is adapted to close the electronic switch to supply the relatively constant DC voltage in addition to the dynamic DC voltage to the RF PA load in a first mode and to open the electronic switch wherein the relatively constant DC voltage is not supplied to the RF PA load in a second mode.
71 Citations
40 Claims
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1. A power management system for a radio frequency (RF) power amplifier (PA) load, comprising:
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a first switching power supply adapted to provide a relatively constant DC voltage to the RF PA load, the first switching power supply having an output terminal for coupling a first output filter to the first switching power supply; an electronic switch for selectively coupling the first output filter between the first switching power supply and the RF PA load; a second switching power supply adapted to provide a dynamic DC voltage to the RF PA load, wherein the dynamic DC voltage is amplitude modulated in synchronization with the amplitude of a transmit signal that is to be amplified by the RF PA load, the second switching power supply having an output terminal for coupling a second output filter between the second switching power supply and the RF PA load; and a control system that is adapted to close the electronic switch to supply the relatively constant DC voltage in addition to the dynamic DC voltage to the RF PA load in a first mode and to open the electronic switch wherein the relatively constant DC voltage is not supplied to the RF PA load in a second mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14)
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11. (canceled)
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15. A power management system for an RF PA load comprising:
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a first switching power supply adapted to provide a relatively constant DC voltage; a second switching power supply adapted to provide a dynamic DC voltage to the RF PA load, wherein the dynamic DC voltage is amplitude modulated in synchronization with the amplitude of a transmit signal that is to be amplified by the RF PA load; an electronic switch coupled between the first switching power supply and the RF PA load; and a control system that is adapted to close the electronic switch to supply the relatively constant DC voltage in addition to the dynamic DC voltage to the RF PA load in a first mode and to open the electronic switch wherein the relatively constant DC voltage is not supplied to the RF PA load in a second mode. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27, 28, 29)
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26. (canceled)
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30. A method for supplying power to an RF PA load, comprising:
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providing a power converter having a first switching power supply to provide a relatively constant DC voltage to the RF PA load and a second switching power supply to provide a dynamic DC voltage to the RF PA load, wherein the dynamic DC voltage is amplitude modulated in synchronization with the amplitude of a transmit signal that is to be amplified by the RF PA load, and an electronic switch for selectively coupling the first switching power supply to the RF PA load through a first output filter, and wherein the second switching power supply is coupled to the RF PA load through a second output filter; closing the electronic switch to supply the relatively constant DC voltage in addition to the dynamic DC voltage to the RF PA load in a first mode; and opening the electronic switch to remove the relatively constant DC voltage from the RF PA load in a second mode. - View Dependent Claims (31, 32, 33, 34, 35, 36, 38, 39, 40)
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37. (canceled)
Specification