Power amplification device, and transmission device and communication device both using thereof
A technology for power amplifying and amplifying signals, which is applied to the parts of amplifying devices, power amplifiers, and improving amplifiers to improve efficiency, etc., and can solve the problems of output signal Sout amplitude and phase offset, phase asymmetry, and amplitude offset.
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[0027] Hereinafter, with reference to the drawings, the power amplifying device of the present invention and the transmitting device and communication device using the power amplifying device will be described in detail.
[0028] (First example of implementation)
[0029] figure 1 It is a block diagram schematically showing an example of an embodiment of the power amplifying device of the present invention. As shown in the figure, in the power amplifier device of this example, the input signal Sin is input to the variable phase shift circuit 10. The variable phase shift circuit 10 shifts the phase of the input signal Sin according to the phase control signal Sc and outputs it as the basic signal Sin'. The basic signal Sin' is input to the phase shifter 61. The phase shifter 61 is a circuit that advances the phase shift of the basic signal Sin' by π / 2, and its output is input to the variable gain amplifier 62. In the variable gain amplifier 62, the output signal of the adder 63 ...
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