The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 2006
Filed:
Jun. 24, 2003
John M Wood, Great Baddow, GB;
Nigel C. T Coote, Portsmouth, GB;
John M Wood, Great Baddow, GB;
Nigel C. T Coote, Portsmouth, GB;
BAE Systems plc, London, GB;
Abstract
This invention relates to a method of calibrating a time-interleaved analogue-to-digital sampler () and to a method of performing analogue-to-digital conversion with a sampler () so calibrated. The invention provides a method of calibrating a sampler () comprising N time-interleaved ADCs (), the method comprising the steps of: (a) injecting in turn N calibration signals () into the sampler such that each calibration signal () occupies one of N related frequencies; (b) determining the input signal for each one of the N calibration frequencies (); (c) measuring in the frequency domain the output at each of the N related frequencies for each one of the N calibration frequencies; and (d) determining the relationship that relates the input signal to the output at each of the N related frequencies for each one of the N calibration frequencies.