Sine Signal Generation With Specified Multiple Harmonics Suppression

This paper proposes a sinusoidal signal generator algorithm and architecture for mixed-signal IC testing input as well as quadrature detection circuit applications. It can provide a rectangular waveform approximated to a single-tone signal with harmonics suppression; we can specify the harmonics to suppress using digital control. Its circuit consists of digital circuit, a 1-bit DA converter with an analog filter. Proposed method is simple for implementation with modest performance, compared to a wide dynamic range delta sigma digital-to-analog converter (DAC) and other methods.