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Invention Grant
US07368974B2 Signal adder circuit capable of removing effects due to phase error or amplitude error of I and Q signals 失效
信号加法器电路能够消除由于I和Q信号的相位误差或振幅误差引起的影响

Signal adder circuit capable of removing effects due to phase error or amplitude error of I and Q signals
Abstract:
A signal adder circuit includes: an adding unit that includes at least a pair of amplification elements in which a constant current flows between ground terminals and a ground, input signals having different phases are input to input terminals, and output terminals to which a power supply voltage is applied are connected to each other; a gain control unit that is provided between the ground and each of the ground terminals of the amplification elements so as to adjust the amplitudes of the input signals having different phases; and a phase control unit that is provided between the ground and each of the ground terminals of the amplification elements so as to adjust the phases of the input signals having different phases.
Abstract(Chinese):

信号加法电路包括：加法单元，其包括至少一对放大元件，其中恒定电流在接地端子和地之间流动，具有不同相位的输入信号被输入到输入端子，以及输出端子，电源 施加电压彼此连接; 增益控制单元，设置在放大元件的接地端子和每个接地端子之间，以便调节具有不同相位的输入信号的幅度; 以及相位控制单元，设置在放大元件的接地端子和每个接地端子之间，以便调节具有不同相位的输入信号的相位。

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