
基本信息:
- 专利标题: 用于在功率放大器系统中包络整形的装置和方法
- 专利标题(英):Apparatus and methods for envelope shaping in power amplifier systems
- 申请号:CN201410165310.9 申请日:2014-04-23
- 公开(公告)号:CN104124929A 公开(公告)日:2014-10-29
- 发明人: S.克斯巴克 , C.里奥
- 申请人: 天工方案公司
- 申请人地址: 美国马萨诸塞州
- 专利权人: 天工方案公司
- 当前专利权人: 天工方案公司
- 当前专利权人地址: 美国马萨诸塞州
- 代理机构: 北京市柳沈律师事务所
- 代理人: 叶齐峰
- 优先权: 61/815,140 2013.04.23 US
- 主分类号: H03F3/20
- IPC分类号: H03F3/20 ; H03G3/20
Apparatus and methods for envelope shaping in power amplifier systems are provided. In certain implementations, a power amplifier system includes a modulator for generating a RF signal, a power amplifier for amplifying the RF signal, a gain control circuit for controlling the gain of the power amplifier, and an envelope tracking system for controlling a voltage level of the power amplifier's supply voltage based on an envelope signal corresponding to the RF signal's envelope. The gain control circuit includes a gain adjustment table, and the envelope tracking system includes an envelope shaping circuit including an isodistortion table. The isodistortion table can be used to map the envelope signal to a shaped envelope signal so as to maintain a substantially constant distortion in the system's transmit and/or receive bands across the envelope signal's range.
公开/授权文献:
- CN104124929B 用于在功率放大器系统中包络整形的装置和方法 公开/授权日:2018-08-03
IPC结构图谱:
H | 电学 |
--H03 | 基本电子电路 |
----H03F | 放大器 |
------H03F3/00 | 只带有电子管或只带有半导体器件作为放大元件的放大器 |
--------H03F3/20 | .功率放大器,例如乙类放大器,丙类放大器 |