Amplification apparatus

1. An amplification apparatus, comprising:

at least one voltage converter for converting a voltage of a supplied power, which is supplied from an external power supply source to the amplification apparatus, to a lower voltage;

a plurality of amplifiers operable by the supplied power, which has the lower voltage as converted by the at least one voltage converter, for amplifying a radio frequency signal;

an adjuster provided to correspond to one of the plurality of amplifiers, the adjuster adjusting an amplitude and a phase of the radio frequency signal output to the one of the plurality of amplifiers;

an attenuator for attenuating the radio frequency signal output to the adjuster;

a radio frequency switch configured to be set ON or OFF depending on an external control, the radio frequency switch outputting the radio frequency signal that is received only when the radio frequency switch is set to ON,

wherein the attenuator comprises a variable attenuator for attenuating the radio frequency signal outputted from the radio frequency switch, based on the external control; and

a signal splitter for splitting the radio frequency signal that is received from the variable attenuator, and outputting the radio frequency signal that is split to the plurality of amplifiers.

2. The amplification apparatus according to claim 1 , wherein the at least one voltage converter is each associated with, and is each provided onboard of, one of the plurality of amplifiers.

3. The amplification apparatus according to claim 1 , wherein the at least one voltage converter includes a plurality of voltage converters,

and

wherein one of the plurality of voltage converters superimposes a voltage onto outputs from the signal splitter to the plurality of amplifiers.

4. The amplification apparatus according to claim 3 , further comprising:

a signal combiner for combining a plurality of radio frequency signals which are outputted from the plurality of amplifiers, respectively, and outputting resulting combined radio frequency signal.

5. The amplification apparatus according to claim 1 , wherein the at least one voltage converter is included in each of the plurality of amplifiers.

6. The amplification apparatus according to claim 1 , wherein the at least one voltage converter superimposes the lower voltage to the radio frequency signal that is outputted from the adjuster.

7. The amplification apparatus according to claim 1 , wherein the adjuster comprises:

an amplitude and phase adjuster that, prior to the one of the plurality of amplifiers receiving the radio frequency signal, adjusts the amplitude and the phase of the radio frequency signal that the amplitude and phase adjuster sends to the one of the plurality of amplifiers.

8. An amplification apparatus, comprising:

at least one voltage converter for converting a voltage of a supplied power, which is supplied from an external power supply source to the amplification apparatus, to a lower voltage;

at least one amplifier unit operable by the supplied power, which has the lower voltage as converted by the at least one voltage converter, for amplifying a radio frequency signal;

an adjuster provided to correspond to one of the at least one amplifier unit, the adjuster an amplitude and a phase of the radio frequency signal output the one of the at least one amplifier unit; and

an attenuator for attenuating the radio frequency signal output to the adjuster,

wherein the adjuster comprises an amplitude and phase adjuster that, prior to the one of the at least one amplifier unit receiving the radio frequency signal, adjusts the amplitude and the phase of the radio frequency signal that the amplitude and phase adjuster sends to the one of the at least one amplifier unit, and

wherein the at least one voltage converter superimposes the lower voltage to the radio frequency signal that is outputted from the amplitude and phase adjuster.

9. The amplification apparatus according to claim 8 , wherein the adjuster further comprises:

a pre-driver amplifier that amplifies the radio frequency signal that is outputted from the amplitude and phase adjuster before the at least one voltage converter superimposes the lower voltage to the radio frequency signal.

10. An amplification apparatus comprising:

at least one voltage converter for converting voltage of a supplied power, which is supplied from an external power supply source to the amplification apparatus, to a lower voltage;

at least one amplifier unit operable by the supplied power, which has the lower voltage as converted by at the at least one voltage converter, for amplifying a radio frequency signal;

an adjuster provided to correspond to one of the at least one amplifier unit, the adjuster adjusting an amplitude and a phase of the radio frequency signal output to the one of the at least one amplifier unit; and

an attenuator for attenuating the radio frequency signal output to the adjuster,

wherein the adjuster comprises:

an amplitude and phase adjuster that, prior to the one of the at least one amplifier unit receiving the radio frequency signal, adjusts the amplitude and the phase of the radio frequency signal that the amplitude and phase adjuster sends to the one of the at least one amplifier unit; and

a pre-driver amplifier that amplifies the radio frequency signal that is outputted from the amplitude and phase adjuster before the at least one voltage converter superimposes the lower voltage to the radio frequency signal.

11. The amplification apparatus according to claim 1 , wherein the variable attenuator has an adjustable attenuation level, the variable attenuator reducing a power level of the radio frequency signal based on an externally supplied control signal before the adjuster receives the radio frequency signal.

12. An amplification apparatus, comprising:

at least one voltage converter for converting a voltage of a supplied power, which is supplied from an external power supply source to the amplification apparatus, to a lower voltage;

at least one amplifier unit operable by the supplied power, which has the lower voltage as converted by the at least one voltage converter, for amplifying a radio frequency signal;

an adjuster provided to correspond to one of the at least one amplifier unit, the adjuster adjusting an amplitude and a phase of the radio frequency signal output to the one of the at least one amplifier unit; and

an attenuator for attenuating the radio frequency signal output to the adjuster,

wherein the attenuator comprises a variable attenuator that has an adjustable attenuation level, the variable attenuator reducing a power level of the radio frequency signal based on an externally supplied control signal before the adjuster receives the radio frequency signal, and

wherein the attenuator further comprises a fixed attenuator that has a fixed attenuation level, the fixed attenuator reducing the power level of the radio frequency signal that is outputted from the variable attenuator before the adjuster receives the radio frequency signal.

13. The amplification apparatus according to claim 1 , further comprising:

another adjuster provided to correspond to another one of the plurality of amplifiers.

14. An amplification apparatus, comprising:

at least one voltage converter for converting a voltage of a supplied power, which is supplied from an external power supply source to the amplification apparatus to a lower voltage;

at least one amplifier unit operable by the supplied power, which has the lower voltage as converted by the at least one voltage converter, for amplifying a radio frequency signal;

an adjuster provided to correspond to one of the at least one amplifier unit, the adjuster adjusting an amplitude and a phase of the radio frequency signal output to the one of the at least one amplifier unit;

an attenuator for attenuating the radio frequency signal output to the adjuster;

another adjuster provided to correspond to another one of the at least one amplifier unit; and

a signal splitter that splits the radio frequency signal that is received from the attenuator and sends the radio frequency signal that is split to the adjuster and to the another adjuster,

wherein, before the radio frequency signal is sent to the at least one amplifier, a single voltage converter of the at least one voltage converter superimposes the lower voltage to the radio frequency signal that is outputted from the adjuster and the another adjuster.

15. An amplification apparatus, comprising:

an attenuator for attenuating a radio frequency signal that is provided to the amplification apparatus;

at least one adjuster adjusting an amplitude and a phase of the radio frequency signal outputted from the attenuator;

at least one voltage converters for converting a voltage of an external power supply source to a supplied power to a converted voltage;

plurality of amplifiers provided with the converted voltage to amplify the radio frequency signal that is outputted from the at least one adjuster;

a radio frequency switch configured to be set ON or OFF depending on an external control, the radio frequency switch outputting the radio frequency signal that is received only when the radio frequency switch is set to ON,

wherein the attenuator comprises a variable attenuator for attenuating the radio frequency signal outputted from the radio frequency switch based on the external control; and

a signal splitter for splitting the radio frequency signal that is received from the variable attenuator, and outputting the radio frequency signal that is split to the plurality of amplifiers.

16. The amplification apparatus according to claim 15 , wherein the adjuster comprises:

an amplitude and phase adjuster that, prior to the plurality of amplifiers receiving the radio frequency signal, adjusts the amplitude and the phase of the radio frequency signal that the amplitude and phase adjuster sends to the at least one amplifier.

17. The amplification apparatus according to claim 16 , wherein the variable attenuator has an adjustable attenuation level, the variable attenuator reducing a power level of the radio frequency signal based on an externally supplied control signal before the adjuster receives the radio frequency signal.

18. An amplification apparatus, comprising:

an attenuator for attenuating a radio frequency signal that is provided to the amplification apparatus;

at least one adjuster adjusting an amplitude and a phase of the radio frequency signal outputted from the attenuator;

at least one voltage converters for converting a voltage of an external power supply source to a supplied power to a converted voltage; and

at least one amplifier provided with the converted voltage to amplify the radio frequency that is outputted from the at least one adjuster,

wherein the adjuster comprises an amplitude and phase adjuster that, prior to the at least one amplifier receiving the radio frequency signal, adjusts the amplitude and the phase of the radio frequency signal that the amplitude and phase adjuster sends to the at least one amplifier,

wherein the attenuator comprises a variable attenuator that has an adjustable attenuation level, the variable attenuator reducing a power level of the radio frequency signal based on an externally supplied control signal before the adjuster receives the radio frequency signal, and

wherein the attenuator further comprises a fixed attenuator that has a fixed attenuation level, the fixed attenuator reducing the power level of the radio frequency signal that is outputted from the variable attenuator before the adjuster receives the radio frequency signal.

19. The amplification apparatus according to claim 15 , wherein the at least one adjuster comprises a first adjuster and a second adjustor

wherein the signal splitter sends the radio frequency signal that is split to the first adjuster and the second adjuster.

20. An amplification apparatus comprising:

an attenuator for attenuating a radio frequency signal that is provided to the amplification apparatus;

at least one adjuster adjusting an amplitude and a phase of the radio frequency signal outputted from fire attenuator;

at least one voltage converters for converting a voltage of an external power supply source to a supplied power to a converted voltage; and

at least one amplifier provided with the converted voltage to amplify the radio frequency signal that is outputted from the at least one adjuster,

wherein the at least one adjuster comprises a first adjuster and a second adjustor,

wherein the amplification apparatus further comprises a signal splitter that splits the radio frequency signal that is received from the attenuator and sends the radio frequency signal that is split to the first adjuster and the second adjuster, and

wherein, before the radio frequency signal is sent to the at least one amplifier, a single voltage converter of the at least one voltage converter superimposes the converted voltage to the radio frequency signal that is outputted from the first adjuster and the second adjuster.