An oversampling-based analog multitone signal generator

This brief presents the design of an analog oscillator capable of generating multitone signals by encoding the information in an oversampled delta-sigma modulated one-bit stream. With the exception of low-pass filter, the proposed design is completely digital allowing accurate control of the amplitude, frequency, and phase of all sinusoids making up the multitone signal. Simulations and FPGA experiments performed to date have verified the performance of the proposed design.