Predistortion linearizer and predistortion distortion compensation method, program, and medium

A predistortion linearizer comprising:

• signal variable dividing means of dividing an input signal that has been input, into two signals at a variable division ratio;
• distortion signal generating means of generating a distortion signal using one of said divided signals;
• signal synthesizing means of synthesizing the other of said divided signals with said generated distortion signal;
• and
• signal amplifying means of amplifying said synthesized signal and outputting an output signal, and
• wherein said signal variable dividing means varies said division ratio such that (1) there is a predetermined relationship between the level of a difference between the signal amplitudes of predetermined frequency components contained in a distortion signal generated by said distortion signal generating means and the level of a difference between the signal amplitudes of said predetermined frequency components contained in a distortion signal generated by said signal amplifying means and/or (2) there is a predetermined relationship between a difference between the phases of said predetermined frequency components contained in the distortion signal generated by said distortion signal generating means and a difference between the phases of said predetermined frequency components contained in the distortion signal generated by said signal amplifying means.

A predistortion linearizer comprising:

• signal dividing means of dividing an input signal that has been input, into two signals;
• distortion signal generating means of generating a distortion signal using one of said divided signals and a predetermined bias voltage;
• bias voltage control means of controlling said bias voltage;
• signal synthesizing means of synthesizing the other of said divided signals with said generated distortion signal;
• and
• signal amplifying means of amplifying said synthesized signal and outputting an output signal, and
• wherein said bias voltage control means controls said bias voltage such that (1) there is a predetermined relationship between the level of a difference between the signal amplitudes of predetermined frequency components contained in a distortion signal generated by said distortion signal generating means and the level of a difference between the signal amplitudes of said predetermined frequency components contained in a distortion signal generated by said signal amplifying means and/or (2) there is a predetermined relationship between a difference between the phases of said predetermined frequency components contained in the distortion signal generated by said distortion signal generating means and a difference between the phases of said predetermined frequency components contained in the distortion signal generated by said signal amplifying means.

A predistortion linearizer comprising:

• first power dividing means of dividing an input signal;
• first propagation time delay means of adjusting a propagation delay time for the signal divided by said first power dividing means;
• second power dividing means of dividing the signal divided by said first power dividing means;
• second propagation time delay means of adjusting a propagation delay time for the signal divided by said second power dividing means;
• distortion generating means of generating a distortion signal by receiving the signal divided by said second power dividing means, as an input;
• first vector adjusting means of adjusting the amplitude and phase of an output signal from said distortion generating means;
• first power synthesizing means of synthesizing an output signal from said second propagation time delay means with an output signal from said first vector adjusting means;
• second vector adjusting means of adjusting the amplitude and phase of an output signal from said first power synthesizing means;
• second power synthesizing means of synthesizing an output signal from said first propagation time delay means with an output signal from said second vector adjusting means;
• power amplifying means of amplifying an output signal from said second power synthesizing means;
• third power dividing means of dividing an output signal from said power amplifying means;
• and
• detecting means of detecting the level of the signal divided by said third power dividing means, and in that:
• said second power dividing means can vary power division ratio in response to a control signal,
• the control signal is supplied to at least one of said second power dividing means and said distortion generating circuit, and
• the control signal is supplied from an output of said detecting means.

A predistortion linearizer comprising:

• first power dividing means of dividing an input signal;
• first propagation time delay means of adjusting a propagation delay time for the signal divided by said first power dividing means;
• power level adjusting means of adjusting the power level of an output signal from said first propagation time delay means;
• second power dividing means of dividing the signal divided by said first power dividing means;
• second propagation time delay means of adjusting a propagation delay time for the signal divided by said second power dividing means;
• distortion generating means of generating a distortion signal by receiving the signal divided by said second power dividing means, as an input;
• first vector adjusting means of adjusting the amplitude and phase of an output signal from said distortion generating means;
• first power synthesizing means of synthesizing an output signal from said second propagation time delay means with an output signal from said first vector adjusting means;
• second vector adjusting means of adjusting the amplitude and phase of an output signal from said first power synthesizing means;
• second power synthesizing means of synthesizing an output signal from said power level adjusting means with an output signal from said second vector adjusting means;
• power amplifying means of amplifying an output signal from said second power synthesizing means;
• third power dividing means of dividing an output signal from said power amplifying means;
• and
• detecting means of detecting the level of the signal divided by said third power dividing means, and in that:
• a power division ratio used by said first power dividing means and gain of said power level adjusting means can be varied in response to a control signal,
• the control signal is supplied to at least one of said first power dividing means, said power level adjusting means, and said distortion generating circuit, and
• the control signal is supplied from an output of said detecting means.

A predistortion linearizer comprising:

• first power dividing means of dividing an input signal;
• first propagation time delay means of adjusting a propagation delay time for the signal divided by said first power dividing means;
• second power dividing means of dividing the signal divided by said first power dividing means;
• second propagation time delay means of adjusting a propagation delay time for the signal divided by said second power dividing means;
• power level adjusting means of adjusting the power level of the signal divided by said second power dividing means;
• distortion generating means of generating a distortion signal by receiving the signal divided by said power level adjusting means, as an input;
• first vector adjusting means of adjusting the amplitude and phase of an output signal from said distortion generating means;
• first power synthesizing means of synthesizing an output signal from said second propagation time delay means with an output signal from said first vector adjusting means;
• second vector adjusting means of adjusting the amplitude and phase of an output signal from said first power synthesizing means;
• second power synthesizing means of synthesizing an output signal from said first propagation time delay means with an output signal from said second vector adjusting means;
• power amplifying means of amplifying an output signal from said second power synthesizing means;
• third power dividing means of dividing an output signal from said power amplifying means;
• and
• detecting means of detecting the level of the signal divided by said third power dividing means, and in that:
• gain of said power level adjusting means can be varied in response to a control signal, and
• the control signal is supplied from an output of said detecting means.

A predistortion linearizer comprising:

• first power dividing means of dividing an input signal;
• first propagation time delay means of adjusting a propagation delay time for the signal divided by said first power dividing means;
• second power dividing means of dividing the signal divided by said first power dividing means;
• second propagation time delay means of adjusting a propagation delay time for the signal divided by said second power dividing means;
• distortion generating means of generating a distortion signal by receiving the signal divided by said second power dividing means, as an input;
• first vector adjusting means of adjusting the amplitude and phase of an output signal from said distortion generating means;
• first power synthesizing means of synthesizing an output signal from said second propagation time delay means with an output signal from said first vector adjusting means;
• second vector adjusting means of adjusting the amplitude and phase of an output signal from said first power synthesizing means;
• second power synthesizing means of synthesizing an output signal from said first propagation time delay means with an output signal from said second vector adjusting means;
• power amplifying means of amplifying an output signal from said second power synthesizing means;
• third power dividing means of dividing an output signal from said power amplifying means;
• and
• detecting means of detecting the level of the signal divided by said third power dividing means, and in that:
• a bias voltage at said distortion generating means can be varied in response to a control signal, and
• the control signal is supplied from an output of said detecting means.

A predistortion linearizer comprising:

• first power dividing means of dividing an input signal;
• second power dividing means of dividing the signal divided by said first power dividing means;
• first propagation time delay means of adjusting a propagation delay time for the signal divided by said second power dividing means;
• third power dividing means of dividing the signal divided by said second power dividing means;
• second propagation time delay means of adjusting a propagation delay time for the signal divided by said third power dividing means;
• distortion generating means of generating a distortion signal by receiving the signal divided by said third power dividing means, as an input;
• first vector adjusting means of adjusting the amplitude and phase of an output signal from said distortion generating means;
• first power synthesizing means of synthesizing an output signal from said second propagation time delay means with an output signal from said first vector adjusting means;
• second vector adjusting means of adjusting the amplitude and phase of an output signal from said first power synthesizing means;
• second power synthesizing means of synthesizing an output signal from said first propagation time delay means with an output signal from said second vector adjusting means;
• power amplifying means of amplifying an output signal from said second power synthesizing means;
• and
• detecting means of detecting the level of the signal divided by said first power dividing means, and in that:
• said third power dividing means can vary power division ratio in response to a control signal,
• the control signal is supplied to at least one of said third power dividing means and said distortion generating circuit, and
• the control signal is supplied from an output of said detecting means.

A predistortion distortion compensation method comprising:

• a signal dividing step of dividing an input signal that has been input, into two signals;
• a distortion signal generating step of generating a distortion signal using one of said divided signals;
• a signal synthesizing step of synthesizing the other of said divided signals with said generated distortion signal;
• a signal amplifying step of amplifying said synthesized signal and outputting an output signal;
• and
• a control step of controlling input power and/or a bias voltage used in said distortion signal generating step such that (1) there is a predetermined relationship between the level of a difference between the signal amplitudes of predetermined frequency components contained in a distortion signal generated in said distortion signal generating step and the level of a difference between the signal amplitudes of said predetermined frequency components contained in a distortion signal generated in said signal amplifying step and/or (2) there is a predetermined relationship between a difference between the phases of said predetermined frequency components contained in the distortion signal generated in said distortion signal generating step and a difference between the phases of said predetermined frequency components contained in the distortion signal generated in said signal amplifying step.