Invention Grant
US08055226B2 Frequency response correction for a receiver having a frequency translation device 有权
具有频率转换装置的接收机的频率响应校正

  • Patent Title: Frequency response correction for a receiver having a frequency translation device
  • Patent Title (中): 具有频率转换装置的接收机的频率响应校正
  • Application No.: US11583200
    Application Date: 2006-10-18
  • Publication No.: US08055226B2
    Publication Date: 2011-11-08
  • Inventor: Yi HeMarcus K. Da Silva
  • Applicant: Yi HeMarcus K. Da Silva
  • Applicant Address: US OR Beaverton
  • Assignee: Tektronix, Inc.
  • Current Assignee: Tektronix, Inc.
  • Current Assignee Address: US OR Beaverton
  • Agent Francis I. Gray; Michael A. Nelson
  • Main IPC: H04B11/00
  • IPC: H04B11/00
Frequency response correction for a receiver having a frequency translation device
Abstract:
A method of correcting the frequency response of an RF receiver having a frequency translation device and a fixed IF frequency section uses calibration data representing frequency responses over a wide frequency range for multiple center frequencies. The calibration data are based upon a multi-dimensional model for the frequency translation device that includes at least center frequency and offset frequency. The calibration data are stored in the RF receiver during factory calibration. A run-time normalization of the RF receiver produces a normalization frequency response at a reference frequency, and a relative frequency response at a desired center frequency is derived from the calibration data. The normalized and relative frequency responses are combined to produce an overall frequency response that is used by the RF receiver to configure an inverse filter to correct channel linear distortion produced by the frequency response of the frequency translation device at the desired center frequency.
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