Similar combination and cancellation power amplifier circuit

A similar combination and cancellation power amplifier circuit, wherein the similar combination and cancellation power amplifier circuit having a function of a branch similar input combination and input cancellation combiner main circuit is implemented by connecting an output of a main signal branch similar input combination and input cancellation parallel circuit or main signal branch similar input combination and input cancellation series circuit to a main power amplifier circuit, and an output of a main signal and branch similar input combination combiner circuit in the main signal branch similar input combination and input cancellation parallel circuit or main signal branch similar input combination and input cancellation series circuit is connected to an input of the main power amplifier circuit, to implement a branch similar input combination and main signal combiner main circuit;

• in a branch similar input combination and input cancellation combiner main circuit of the similar combination and cancellation power amplifier circuit, the main signal branch similar input combination and input cancellation parallel circuit is implemented through a parallel input divider circuit or through a parallel digital input divider circuit and a parallel output combiner circuit by parallelly connecting analog input ports of two circuits, which are the main signal and branch similar input combination combiner circuit and a branch similar input cancellation circuit, or one analog input port and one digital input port in the two circuits or the digital input ports of the two circuits and outputs of the two circuits;
• or implemented through the parallel input divider circuit or through the parallel digital input divider circuit and the parallel output combiner circuit by parallelly connecting analog input ports of two circuits, which are a main signal and branch similar input cancellation combiner circuit and a branch similar input combiner circuit, or one analog input port and one digital input port in the two circuits or the digital input ports of the two circuits and outputs of the two circuits;
• or implemented through the parallel input divider circuit or through the parallel digital input divider circuit and the parallel output combiner circuit by parallelly connecting inputs of two circuits, which are a branch similar input combination and input cancellation combiner circuit and a corresponding input combination or input cancellation main signal time-delay adjustment circuit, or one analog input port and one digital input port in the two circuits and outputs of the two circuits, wherein an input of the parallel input divider circuit or a digital input port of the parallel digital input divider circuit and an output of the parallel output combiner circuit are a corresponding input or digital input port and an output of the main signal branch similar input combination and input cancellation parallel circuit;
• in the branch similar input combination and input cancellation combiner main circuit of the similar combination and cancellation power amplifier circuit, the main signal branch similar input combination and input cancellation series circuit is implemented by serially connecting the main signal and branch similar input combination combiner circuit and the main signal and branch similar input cancellation combiner circuit, wherein an input of the main signal and branch similar input cancellation combiner circuit and the output of the main signal and branch similar input combination combiner circuit or an input of the branch similar input combination combiner circuit and the output of the branch similar input cancellation combiner circuit are a corresponding input and output of the main signal branch similar input combination and input cancellation series circuit;
• in the main signal branch similar input combination and input cancellation parallel circuit, only one input combination or input cancellation main signal time-delay adjustment circuit is provided, and in the main signal and branch similar input combination combiner circuit or the main signal and branch similar input cancellation combiner circuit, only one input combination or input cancellation main signal time-delay adjustment circuit is provided;
• the main signal and branch similar input combination combiner circuit or the main signal and branch similar input cancellation combiner circuit is parallelly connected to inputs of the two circuits, which are the branch similar input combiner circuit or the branch similar input cancellation circuit and the corresponding input combination or input cancellation main signal time-delay adjustment circuit, or one analog input port and one digital input port in the two circuits and the outputs of the two circuits through a branch-main combination or branch-main cancellation input divider circuit or through a branch-main combination or branch-main cancellation digital input divider circuit and a branch-main combination or branch-main cancellation output combiner circuit, to implement the main signal and branch similar input combination combiner circuit or the main signal and branch similar input cancellation combiner circuit;
• or the branch similar input combination and input cancellation combiner circuit therein is parallelly connected to inputs of the two circuits, which are the branch similar input combiner circuit and the branch similar input cancellation circuit, or the digital input ports of the two circuits or one analog input port and one digital input port in the two circuits and the outputs of the two circuits through the branch-main combination or branch-main cancellation input divider circuit or through the branch-main combination or branch-main cancellation digital input divider circuit and the branch-main combination or branch-main cancellation output combiner circuit, to implement the branch similar input combination and input cancellation combiner circuit;
• the branch similar input combiner circuit is configured to output a distorted signal having input same-phase combination compensation, which has a characteristic of compensating for extension of a linear gain dynamic range of main power signals among Class C main power signals outputted by a Class C main power amplifier circuit that are less than an input combination equal-power point to have main power signals with lower output power level;
• the branch similar input cancellation circuit is configured to output a pre-distorted signal having input reversed-phase similar cancellation, which has a characteristic similar to that of the distorted signal greater than an input cancellation equal-power point in the Class C main power signal with an extended linear gain dynamic range of main power signals of the branch similar input combination and main signal combiner main circuit;
• input combination and input cancellation features of the output of the branch similar input combination and input cancellation combiner main circuit are as follows:
• at an input combination equal-power point in the branch similar input combination and main signal combiner main circuit and an input cancellation equal-power point in the branch similar input combination and input cancellation combiner main circuit, when a main power amplifier circuit is a Class C power amplifier circuit, at equal or nearly equal time delays, equal or nearly equal amplitudes, and when phase of the two circuits in the branch similar input combination and main signal combiner main circuit are within a range from 0 degree to 45 degrees, and phase of the branch similar input combination and input cancellation combiner main circuit are opposite or nearly opposite, in the main signal branch similar input combination and input cancellation parallel circuit or main signal branch similar input combination and input cancellation series circuit meeting the above conditions, the distorted signal having input same-phase combination compensation outputted by the branch similar input combiner circuit and the pre-distorted signal having input reversed-phase similar cancellation outputted by the branch similar input cancellation circuit are generated on the output of the main signal branch similar input combination and input cancellation parallel circuit or main signal branch similar input combination and input cancellation series circuit, to implement a combination cancellation mixed distorted signal;
• in the combination cancellation mixed distorted signal, when the distorted signal having input same-phase combination compensation outputted by the branch similar input combiner circuit has the characteristic of compensating for the extension of the linear gain dynamic range of the main power signals among the Class C main power signals outputted by the Class C main power amplifier circuit that are less than the input combination equal-power point to have the main power signals with lower output power level, and on the output of the branch similar input combination and main signal combiner main circuit in the branch similar input combination and input cancellation combiner main circuit, when the time delays equal to the input combination equal-power point are equal, the amplitudes are equal or nearly equal, and the phase of the two circuits are within the range from 0 degree to 45 degrees, the distorted signal having same-phase combination compensation outputted by the branch similar input combiner circuit and the compensation extension of the linear gain dynamic range of the main power signals among the Class C main power signals outputted by the Class C main power amplifier circuit that are less than the input combination equal-power point to the main power signals with lower output power level are realized, and an EVM value and a gain fluctuation are increased within the linear gain dynamic range that has been extended to the main power signals with lower output power level, thereby increasing a linear ACPR value of the Class C main power signal with the extended linear gain dynamic range of the main power signals of the branch similar input combination and main signal combiner main circuit to above 30-35 dBc;
• when the linear ACPR value of the Class C main power signal with the extended linear gain dynamic range of the main power signals reaches above 30-35 dBc on the output of the branch similar input combination and main signal combiner main circuit, the pre-distorted signal having input reversed-phase similar cancellation outputted by the branch similar input cancellation circuit in the combination cancellation mixed distorted signal has the characteristic similar to that of the distorted signal greater than the input cancellation equal-power point in the Class C main power signal with the extended linear gain dynamic range of the main power signals of the branch similar input combination and main signal combiner main circuit, and on the output of the branch similar input combination and input cancellation combiner main circuit, when the time delays equal to the input cancellation equal-power point are equal or nearly equal, the amplitudes are equal or nearly equal, and the phase are opposite or nearly opposite, the reversed-phase similar cancellation between the pre-distorted signal having input reversed-phase similar cancellation generated by the branch similar input cancellation circuit and the distorted signal greater than the input cancellation equal-power point in the Class C main power signal with the extended linear gain dynamic range of the main power signals of the branch similar input combination and main signal combiner main circuit is realized, thereby increasing a linear ACPR value of the Class C main power signal with the extended linear gain dynamic range of the main power signals outputted by the branch similar input combination and input cancellation combiner main circuit to above 40-45 dBC;
• or the reversed-phase similar cancellation between the pre-distorted signal having input reversed-phase similar cancellation generated by the branch similar input cancellation circuit and the distorted signal greater than the input cancellation equal-power point in the Class C main power signal with the extended linear gain dynamic range of the main power signals of the branch similar input combination and main signal combiner main circuit is realized, the linear gain dynamic range of the main power signals is achieved to extend a linear gain dynamic range of a Class C output main power signal, to further extend to the main power signals with lower output power level, and the EVM value and the gain fluctuation are increased within the linear gain dynamic range that has been extended to the main power signals with lower output power level, thereby increasing the linear ACPR value of the Class C main power signal with the extended or further extended linear gain dynamic range of the main power signals of the branch similar input combination and input cancellation combiner main circuit to above 40-45 dBC, and improving the overall efficiency of the similar combination and cancellation power amplifier circuit;
• or through a combination input divider circuit or through a combination digital input divider circuit and a combination output coupling circuit, analog input ports of the two circuits, which are the branch similar input combination and input cancellation combiner main circuit and a branch similar output cancellation circuit, or digital input ports of the two circuits or one analog input port and one digital input port in the two circuits are parallelly connected to outputs of the two circuits, to implement the similar combination and cancellation power amplifier circuit having a function of a branch similar input combination cancellation and branch output cancellation combiner main circuit;
• in a branch similar input combination cancellation and branch output cancellation combiner main circuit, only one input combination or input cancellation main signal time-delay adjustment circuit is provided;
• a distorted signal having output reversed-phase similar cancellation is generated on the output of the branch similar output cancellation circuit, and has a characteristic similar to that of the distorted signal greater than an output cancellation equal-power point in the Class C main power signal with the extended linear gain dynamic range of the main power signals of the branch similar input combination and input cancellation combiner main circuit;
• output cancellation features of an output of the branch similar input combination cancellation and branch output cancellation combiner main circuit are as follows:
• when the linear ACPR value of the Class C main power signal with the extended linear gain dynamic range of the main power signals reaches above 40-45 dBC on an output of the branch similar input combination and input cancellation combiner main circuit, and when time delays at the output cancellation equal-power point in the branch similar input combination cancellation and branch output cancellation combiner main circuit are equal or nearly equal, amplitudes are equal or nearly equal, and phase are opposite or nearly opposite, the distorted signal generated by the branch similar output cancellation circuit and having the output reversed-phase similar cancellation characteristic is similar to the distorted signal greater than the output cancellation equal-power point in the Class C main power signal with the extended linear gain dynamic range of the main power signals outputted by the branch similar input combination and input cancellation combiner main circuit, such that the distorted signal having output reversed-phase similar cancellation generated by the branch similar output cancellation circuit and a distorted signal greater than an output cancellation equal-power point in a Class C main power signal with an extended linear gain dynamic range of main power signals outputted by a main similar input combination and input cancellation combiner main circuit cancel out each other, thereby increasing a linear ACPR value of the Class C main power signal further extended by the main power signals outputted by the branch similar input combination cancellation and branch output cancellation combiner main circuit to more than 50-55 dBC, or a distorted signal having output reversed-phase equality cancellation generated by the branch similar output cancellation circuit and the distorted signal greater than the output cancellation equal-power point in the Class C main power signal with the extended linear gain dynamic range of the main power signals outputted by the main similar input combination and input cancellation combiner main circuit cancel out each other, the linear gain of a Class C output main power signal with the extended linear gain dynamic range of the main power signals is extended through the reverse compensation characteristic of the Class C main power signal with the extended linear gain dynamic range of the main power signals of the branch similar input combination and input cancellation combiner main circuit generated by the branch similar output cancellation circuit, to further extend to have a smaller output main power signal range, and an EVM value and a gain fluctuation are increased within the further extended linear gain dynamic range, thereby increasing the linear ACPR value of the Class C main power signal further extended by the main power signals outputted by the branch similar input combination cancellation and branch output cancellation combiner main circuit to more than 50-55 dBC, and improving overall efficiency;
• or a main power output of a feed-forward distortion extraction circuit of the branch similar input combination and input cancellation combiner main circuit is connected to a main power input of a main feed-forward output cancellation circuit, and a distortion output of the feed-forward distortion extraction circuit of the branch similar input combination and input cancellation combiner main circuit is connected to a distortion input of the main feed-forward output cancellation circuit, to implement a similar combination and cancellation power amplifier circuit having a function of a branch similar input combination cancellation and feed-forward output cancellation series circuit;
• in the branch similar input combination cancellation and feed-forward output cancellation series circuit, from a main input of a main feed-forward input coupling circuit to an output of a feed-forward cancellation coupling circuit via a feed-forward main time-delay circuit and via a feed-forward distortion adjustment power amplifier circuit connected to an output of a feed-forward distortion output combiner circuit, a main feed-forward combination cancellation circuit from the input of the main feed-forward input coupling circuit to the output of the feed-forward cancellation coupling circuit is implemented;
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• same type cancellation features of an output of the branch similar input combination cancellation and feed-forward output cancellation series circuit are as follows:
• when Class C main power linear ACPR of the extended linear gain dynamic range of the main power signals reaches above 40-45 dBC on the output of the branch similar input combination and input cancellation combiner main circuit, on the output of the branch similar input combination cancellation and feed-forward output cancellation series circuit, when time delays at a feed-forward cancellation equal-power point are equal or nearly equal, amplitudes are equal or nearly equal, and phase are opposite or nearly opposite, a distorted signal in a Class C main power signal with an extended linear gain dynamic range of main power signals outputted by the branch similar input combination and input cancellation combiner main circuit is extracted by the distortion output of the feed-forward distortion extraction circuit of the branch similar input combination and input cancellation combiner main circuit and a distorted signal in a Class C main power signal with an extended linear gain dynamic range of main power signals outputted by the main power output of the feed-forward distortion extraction circuit of the branch similar input combination and input cancellation combiner main circuit are the same type of distorted signals, on an output of a main feed-forward combination cancellation circuit, when the time delays at the feed-forward cancellation equal-power point are equal or nearly equal, the amplitudes are equal or nearly equal, and the phase are opposite or nearly opposite, the same type distortion signal cancellation of the distorted signal in the Class C main power signal with the extended linear gain dynamic range of the main power signals outputted by the branch similar input combination and input cancellation combiner main circuit is realized, and a linear gain dynamic range of the Class C output main power signal with the extended linear gain dynamic range of the main power signals is further extended to reach a linear gain dynamic range of a Class AB output main power, and an EVM value and a gain fluctuation are increased within the linear gain dynamic range that has been extended, thereby causing a Class C total linear dynamic range of Class AB output main power signals outputted by the branch similar input combination cancellation and feed-forward output cancellation series circuit to reach a linear ACPR value of the Class AB output main power signal to more than 50-55 dBC, and improving the overall efficiency.