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公开(公告)号：US09419566B2
公开(公告)日：2016-08-16
申请号：US14009099
申请日：2011-04-20
CPC分类号： H03F1/565 , H01L2224/49175 , H03F1/0288 , H03F3/195 , H03F3/21 , H03F3/68 , H03F2200/222 , H03F2200/387 , H03F2200/423 , H03F2200/451
摘要： Apparatus are provided for amplifier systems and related integrated circuits are provided. An exemplary integrated circuit includes a main amplifier arrangement, first impedance matching circuitry coupled between the output of the main amplifier arrangement and a first output of the integrated circuit, a peaking amplifier arrangement, and second impedance matching circuitry coupled between the output of the peaking amplifier arrangement and a second output of the integrated circuit. In one exemplary embodiment, the first impedance matching circuitry and the second impedance matching circuitry have different circuit topologies and different physical topologies.
摘要翻译： 提供放大器系统的装置，并提供相关的集成电路。 示例性集成电路包括主放大器布置，耦合在主放大器布置的输出和集成电路的第一输出之间的第一阻抗匹配电路，峰值放大器布置和耦合在峰值放大器的输出端之间的第二阻抗匹配电路 布置和集成电路的第二输出。 在一个示例性实施例中，第一阻抗匹配电路和第二阻抗匹配电路具有不同的电路拓扑和不同的物理拓扑。
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2.发明授权Communication unit, digital band-pass sigma-delta modulator and method therefor 有权通信单元，数字带通Σ-Δ调制器及其方法公开(公告)号：US09166617B1
公开(公告)日：2015-10-20
申请号：US14574568
申请日：2014-12-18
CPC分类号： H03M3/404 , H03G3/3042 , H03K7/08 , H03M3/30 , H03M3/402 , H03M3/502 , H03M7/3017 , H04L27/2092 , H04L27/368
摘要： A communication unit comprises a power DAC. The DAC comprises: a switched mode power amplifier (SMPA); and a digital band-pass sigma-delta modulator operably coupled to the SMPA. The sigma-delta modulator comprises an input to receive an input baseband signal; a delay; an adder module arranged to add a feedback signal with an output from the delay; and at least two feedback branches. The sigma-delta modulator is arranged to digitally oversample the input baseband signal such that a ratio of a sampling frequency employed by the sigma-delta modulator to a radio frequency (RF) output from the DAC is fixed and the sampling frequency tuned or wherein the sampling frequency is fixed and the ratio is adjusted, such that a first feedback branch in the sigma-delta modulator is formed using at least one from a group of: a zero gain, an additive inverse of a second feedback branch.
摘要翻译： 通信单元包括功率DAC。 DAC包括：开关模式功率放大器（SMPA）; 以及可操作地耦合到SMPA的数字带通Σ-Δ调制器。 Σ-Δ调制器包括用于接收输入基带信号的输入端; 延迟; 加法器模块，被布置成将反馈信号与来自所述延迟的输出相加; 和至少两个反馈分支。 Σ-Δ调制器被布置为对输入基带信号进行数字过采样，使得由Σ-Δ调制器采用的采样频率与DAC输出的射频（RF）的比率是固定的，并且采样频率调谐或其中 采样频率是固定的并且比率被调整，使得使用来自以下的组中的至少一个来形成Σ-Δ调制器中的第一反馈支路：零增益，第二反馈支路的加法逆。
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3.发明申请COMMUNICATION UNIT, DIGITAL BAND-PASS SIGMA-DELTA MODULATOR AND METHOD THEREFOR 有权通信单元，数字带通信号调制器及其方法公开(公告)号：US20150280732A1
公开(公告)日：2015-10-01
申请号：US14574568
申请日：2014-12-18
IPC分类号： H03M3/00
CPC分类号： H03M3/404 , H03G3/3042 , H03K7/08 , H03M3/30 , H03M3/402 , H03M3/502 , H03M7/3017 , H04L27/2092 , H04L27/368
摘要： A communication unit comprises a power DAC. The DAC comprises: a switched mode power amplifier (SMPA); and a digital band-pass sigma-delta modulator operably coupled to the SMPA. The sigma-delta modulator comprises an input to receive an input baseband signal; a delay; an adder module arranged to add a feedback signal with an output from the delay; and at least two feedback branches. The sigma-delta modulator is arranged to digitally oversample the input baseband signal such that a ratio of a sampling frequency employed by the sigma-delta modulator to a radio frequency (RF) output from the DAC is fixed and the sampling frequency tuned or wherein the sampling frequency is fixed and the ratio is adjusted, such that a first feedback branch in the sigma-delta modulator is formed using at least one from a group of: a zero gain, an additive inverse of a second feedback branch.
摘要翻译： 通信单元包括功率DAC。 DAC包括：开关模式功率放大器（SMPA）; 以及可操作地耦合到SMPA的数字带通Σ-Δ调制器。 Σ-Δ调制器包括用于接收输入基带信号的输入端; 延迟; 加法器模块，被布置成将反馈信号与来自所述延迟的输出相加; 和至少两个反馈分支。 Σ-Δ调制器被布置为对输入基带信号进行数字过采样，使得由Σ-Δ调制器采用的采样频率与DAC输出的射频（RF）的比率是固定的，并且采样频率调谐或其中 采样频率是固定的并且比率被调整，使得使用来自以下的组中的至少一个来形成Σ-Δ调制器中的第一反馈支路：零增益，第二反馈支路的加法逆。
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