公开(公告)号：US20110128079A1

公开(公告)日：2011-06-02

申请号：US12955797

申请日：2010-11-29

Applicant: Taek-Jin HWANG ,  Kwang-Chun LEE

Inventor： Taek-Jin HWANG ,  Kwang-Chun LEE

IPC: H03F3/68 ,  H03F1/22

CPC classification number: H03F3/45179 ,  H03F1/565 ,  H03F3/602 ,  H03F3/72 ,  H03F2200/111 ,  H03F2200/537 ,  H03F2203/7209

Abstract: A multi-band power amplifier in a wireless communication system includes: a plurality of matching circuits connected in parallel to an output stage of the power amplifier and corresponding to a plurality of different operation frequencies, respectively; and a plurality of high-frequency amplifiers connected to the plurality of matching circuits, respectively. The plurality of high-frequency amplifiers are selectively operated depending on the operation frequencies. Each of the high-frequency amplifiers may include a plurality of stages. Each of the matching circuits may include a high-frequency transformer.

Abstract translation: 无线通信系统中的多频带功率放大器包括：与功率放大器的输出级并联连接的多个匹配电路，分别对应于多个不同的工作频率; 以及分别连接到所述多个匹配电路的多个高频放大器。 多个高频放大器根据操作频率选择性地工作。 每个高频放大器可以包括多个级。 每个匹配电路可以包括高频变压器。

公开(公告)号：US20100150262A1

公开(公告)日：2010-06-17

申请号：US12620739

申请日：2009-11-18

Applicant: Joon-Hyung KIM ,  Kwang-Chun LEE ,  Gweon-Do JO ,  Jae-Ho JUNG

Inventor： Joon-Hyung KIM ,  Kwang-Chun LEE ,  Gweon-Do JO ,  Jae-Ho JUNG

IPC: H04L25/49

CPC classification number: H04L27/361

Abstract: Provided are a signal amplifying apparatus and method and a wireless transmitter using the same. The signal amplifier includes a polar coordinate converter configured to output an envelope signal and a phase signal by converting a signal to a polar coordinate, a multilevel quantizer configured to output a multilevel quantized signal by quantizing the envelope signal to multiple levels, an amplification state controller configured to control an amplification state using the multilevel quantized signal, and a power amplifier configured to amplify the phase signal according to the controlled amplification state.

Abstract translation: 提供了一种信号放大装置和方法以及使用该放大装置的无线发射机。 信号放大器包括：极坐标转换器，被配置为通过将信号转换为极坐标来输出包络信号和相位信号;多电平量化器，被配置为通过将包络信号量化为多个电平来输出多电平量化信号;放大状态控制器 被配置为使用所述多电平量化信号来控制放大状态，以及功率放大器，被配置为根据所述受控放大状态来放大所述相位信号。