Patent Number: 6,166,568

Title: Method and arrangement for generating orthogonal sinusoidal signals

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.

Inventors: Korsfeldt; Dan (Alvdalsvagen, SE)

Assignee: Telefonaktiebolaget LM Ericsson (publ)

International Classification: G06F 1/02 (20060101); H03B 27/00 (20060101); H03B 28/00 (20060101); H03B 021/00 ()

Expiration Date: 12/26/2017