RF power amplifier device and operating method thereof
First Claim
1. An RF power amplifier device comprising:
- a driver stage amplifier;
a first RF amplifier;
a second RF amplifier; and
a DC voltage converter,wherein the driver stage amplifier, the first RF amplifier, the second RF amplifier, and the DC voltage converter are operable by external power supply voltages supplied from the outside of the RF power amplifier device,wherein an output signal generated from an output terminal of the driver stage amplifier is capable of being supplied to an input terminal of the first RF amplifier and an input terminal of the second RF amplifier,wherein an effective device size of the first RF amplifier is set to a device size larger than an effective device size of the second RF amplifier,wherein the DC voltage converter is capable of generating an operating power supply voltage being a voltage lower than the external power supply voltage by being supplied with the external power supply voltage and supplying the operating power supply voltage to an output terminal of the second RF amplifier, andwherein the external power supply voltage supplied from the outside of the RF power amplifier device is capable of being supplied to an output terminal of the first RF amplifier without via the DC voltage converter.
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Accused Products
Abstract
An RF power amplifier device includes a driver stage amplifier, a first RF amplifier, a second RF amplifier and a DC voltage converter operated by first, second and third external power supply voltages. The output of the driver stage amplifier is supplied to the inputs of the first and second RF amplifiers. An effective device size of the first RF amplifier is set to a device size larger than that of the second RF amplifier. The third external power supply voltage is supplied to the DC voltage converter, so that the DC voltage converter generates a fourth operating power supply voltage corresponding to a low voltage and supplies it to an output terminal of the second RF amplifier. An output terminal of the first RF amplifier can be supplied with the second external power supply voltage without via the DC voltage converter.
85 Citations
20 Claims
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1. An RF power amplifier device comprising:
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a driver stage amplifier; a first RF amplifier; a second RF amplifier; and a DC voltage converter, wherein the driver stage amplifier, the first RF amplifier, the second RF amplifier, and the DC voltage converter are operable by external power supply voltages supplied from the outside of the RF power amplifier device, wherein an output signal generated from an output terminal of the driver stage amplifier is capable of being supplied to an input terminal of the first RF amplifier and an input terminal of the second RF amplifier, wherein an effective device size of the first RF amplifier is set to a device size larger than an effective device size of the second RF amplifier, wherein the DC voltage converter is capable of generating an operating power supply voltage being a voltage lower than the external power supply voltage by being supplied with the external power supply voltage and supplying the operating power supply voltage to an output terminal of the second RF amplifier, and wherein the external power supply voltage supplied from the outside of the RF power amplifier device is capable of being supplied to an output terminal of the first RF amplifier without via the DC voltage converter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An RF module comprising a balanced power amplifier provided inside one package, comprising:
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a first RF power amplifier; and a second RF power amplifier that is operable in parallel with the first RF power amplifier, wherein the first and second RF power amplifiers respectively comprise an RF power amplifier device comprising; a driver stage amplifier; a first RF amplifier; a second RF amplifier; and a DC voltage converter, wherein the driver stage amplifier, the first RF amplifier, the second RF amplifier, and the DC voltage converter are operable by external power supply voltages supplied from the outside of the RF power amplifier device, wherein an output signal generated from an output terminal of the driver stage amplifier is capable of being supplied to an input terminal of the first RF amplifier and an input terminal of the second RF amplifier, wherein an effective device size of the first RF amplifier is set to a device size larger than an effective device size of the second RF amplifier, wherein the DC voltage converter is capable of generating an operating power supply voltage being a voltage lower than the external power supply voltage by being supplied with the external power supply voltage and supplying the operating power supply voltage to an output terminal of the second RF amplifier, and wherein the external power supply voltage supplied from the outside of the RF power amplifier device is capable of being supplied to an output terminal of the first RF amplifier without via the DC voltage converter.
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19. A method for operating an RF power amplifier device comprising a driver stage amplifier, a first RF amplifier, a second RF amplifier, a DC voltage converter, and a bias circuit, comprising the steps of:
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enabling the driver stage amplifier, the first RF amplifier, the second RF amplifier and the DC voltage converter to be operated by external power supply voltages supplied from the outside of the RF power amplifier device; enabling an output signal generated from an output terminal of the driver stage amplifier to be supplied to an input terminal of the first RF amplifier and an input terminal of the second RF amplifier, and setting an effective device size of the first RF amplifier to a device size larger than an effective device size of the second RF amplifier; enabling the DC voltage converter to generate an operating power supply voltage corresponding to a voltage lower than the external power supply voltage by being supplied with the external power supply voltage, and enabling the DC voltage converter to supply the operating power supply voltage to an output terminal of the second RF power amplifier; enabling the external power supply voltage supplied from the outside of the RF power amplifier device to be supplied to an output terminal of the first RF amplifier without via the DC voltage converter; enabling the bias circuit to generate a first bias voltage, a second bias voltage and a third bias voltage respectively and enabling the same to be supplied to an input terminal of the driver stage amplifier, the input terminal of the first RF amplifier and the input terminal of the second RF amplifier respectively; causing the bias circuit to set the second bias voltage and the third bias voltage to a low level and a high level respectively in response to first states of external control signals supplied to external control terminals of the RF power amplifier device to thereby control the first RF amplifier to an inactive state and control the second RF amplifier to an active state; and causing the bias circuit to set the second bias voltage and the third bias voltage to a high level and a low level respectively in response to second states of the external control signals supplied to the external control terminals of the RF power amplifier device to thereby control the first RF amplifier to an active state and control the second RF amplifier to an inactive state. - View Dependent Claims (20)
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Specification