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:
Feb. 26, 2002
Filed:
Nov. 03, 1998
Scott Allen Leyonhjelm, Sundbyberg, SE;
Mark Briffa, Tyresö, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
According to the invention, a Cartesian control means ( ) comprising a phase rotator ( ) and a phase adjuster ( ) is provided. With a method and a device according to the invention, a system is provided that is unconditionally stable with respect to non-phase alignment, regardless of input power changes, temperature and component ageing. No certain conditions need to be placed upon the control system to ensure stability, i.e. the system is non-obtrusive and requires no off-line calibration. The inclusion of the phase rotator ( ) and phase adjustment techniques into the Cartesian control system makes this possible.