Patent ID: 8509294
Filing Date: 2013-08-13
Classification: G06F,H04L

Abstract:
1. A signal generator for testing a wireless communication device comprising: waveform data storage means for storing waveform data of a digital baseband signal including M sample data items and repeatedly and continuously outputting the waveform data; digital-to-analog conversion means for performing digital-analog conversion on the waveform data; frequency conversion means for performing frequency conversion on the digital-analog-converted baseband signal using a carrier signal with a predetermined frequency and outputting the frequency-converted signal as an RF test signal for testing the wireless communication device; and phase shift means that receives the waveform data which is repeatedly output n times from the waveform data storage means, shifts the phase of each sample data item in an n-th waveform data item by a phase shift amount φ wherein the phase shift amount φ wherein the sample data items of the waveform data are a complex I-phase sample data item and a complex Q-phase sample data item, and the phase shift means includes: