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CN102137518B Doherty功放和多频段信号参数调整装置 有权 转让

  • 专利标题： Doherty功放和多频段信号参数调整装置
  • 专利标题（英）： Doherty power amplifier and multi-frequency band signal parameter adjusting device
  • 申请号： CN201010104375.4
    申请日： 2010-01-25
  • 公开(公告)号： CN102137518B
    公开(公告)日： 2013-04-17
  • 发明人: 吴剑锋 , 魏巍 , 韩晶晶 , 王建
  • 申请人： 华为技术有限公司
  • 申请人地址： 广东省深圳市龙岗区坂田华为总部办公楼
  • 专利权人： 华为技术有限公司
  • 当前专利权人： 华为技术有限公司
  • 当前专利权人地址： 广东省深圳市龙岗区坂田华为总部办公楼
  • 主分类号： H04L25/02
  • IPC分类号： H04L25/02 ;  H04W88/08
Doherty功放和多频段信号参数调整装置
摘要：
本发明实施例提供一种Doherty功放，该Doherty功放包括：功分器，用于将接收的信号分成第一路信号和第二路信号；多频段载波功放，用于将功分器输出的信号放大后输入至第一λ/4阻抗变换器一输入端；多频段峰值功放，用于将功分器输出的第二路信号放大后输出；第一λ/4阻抗变换器为支持多频段的阻抗变换器，用于通过阻抗变换使第一λ/4阻抗变换器的负载阻抗与多频段载波功放输出阻抗进行阻抗匹配；第二λ/4阻抗变换器，用于通过阻抗变换使所述第二λ/4阻抗变换器的输入阻抗与Doherty功放的负载阻抗进行阻抗匹配。本发明的Doherty功放支持多频段操作，效率高，可以降低系统的功耗。
摘要（英）：

The embodiment of the invention discloses a Doherty power amplifier which comprises a power divider, a multi-frequency band carrier power amplifier, a multi-frequency band peak power amplifier, a first Lambda/4 impedance transformer and a second Lambda/4 impedance transformer, wherein the power divider is used for dividing the received signals into a first path of signals and a second path of signals; the multi-frequency band carrier power amplifier is used for amplifying the signals output by the power divider and then transmitting the signals the input end of the first Lambda/4 impedance transformer; the multi-frequency band peak power amplifier is used for amplifying the second path of signals output by the power divider and then outputting the signals; the first Lambda/4 impedance transformer supports multiple frequency band ranges, and is used for impedance matching between the load impedance of the first Lambda/4 impedance transformer and the output impedance of the multi-frequency band carrier power amplifier through impedance conversion; and the second Lambda/4 impedance transformer is used for impedance matching between the input impedance of the second Lambda/4 impedancetransformer and the load impedance of the Doherty power amplifier through the impedance conversion. The Doherty power amplifier of the invention supports multi-frequency band operation, has high efficiency, and can lower the power consumption of the system.

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