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:
Dec. 26, 2000
Filed:
Sep. 15, 1998
Dan Korsfeldt, Alvdalsvagen, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
A method and arrangement for generating orthogonal sinusoidal signals in a digital oscillator. The oscillator includes a signal generator which generates a digital sinusoidal signal. The digital sinusoidal signal is fed into a phase shifter which is separate from the signal generator. The phase shifter derives from the digital sinusoidal signal a first pair of digital sinusoidal signals having a phase difference corresponding to at least one sample step. The first pair of digital sinusoidal signals is fed into an orthogonalization unit which produces a pair of orthogonal digital sinusoidal signals by forming linear combinations of the first pair of digital sinusoidal signals.