Invention Application
US20130147550A1 Power Amplifier Time-Delay Invariant Predistortion Methods and Apparatus 有权
功率放大器时延不变预失真方法和装置

  • Patent Title: Power Amplifier Time-Delay Invariant Predistortion Methods and Apparatus
  • Patent Title (中): 功率放大器时延不变预失真方法和装置
  • Application No.: US13724157
    Application Date: 2012-12-21
  • Publication No.: US20130147550A1
    Publication Date: 2013-06-13
  • Inventor: Dali YangJia Yang
  • Applicant: DALI SYSTEMS CO. LTD.
  • Applicant Address: KY George Town
  • Assignee: DALI SYSTEMS CO. LTD.
  • Current Assignee: DALI SYSTEMS CO. LTD.
  • Current Assignee Address: KY George Town
  • Main IPC: H03F1/32
  • IPC: H03F1/32
Power Amplifier Time-Delay Invariant Predistortion Methods and Apparatus
Abstract:
An embodiment of the invention is a time-delay invariant predistortion approach to linearize power amplifiers in wireless RF transmitters. The predistortion architecture is based on the stored-compensation or memory-compensation principle by using a combined time-delay addressing method, and therefore, the architecture has an intrinsic, self-calibrating time-delay compensation function. The predistortion architecture only uses a lookup table to conduct both the correction of non-linear responses of a power amplifier and the compensation of any time-delay effects presented in the same system. Due to the time-delay invariant characteristic, the predistortion design has a wider dynamic range processing advantage for wireless RF signals, and therefore can be implemented in multi-carrier and multi-channel wireless systems.
Information query
Patent Agency Ranking
0/0