Patent ID: 8493258

Claim:
A device for converting a digital input signal to an analog signal, the device comprising: a first signal path having: a transformer, the transformer phase shifting replicas of image spectra of the digital input signal that fall in even Nyquist zones by substantially a first predetermined amount and phase shifting replicas of the image spectra that fall in odd Nyquist zones by substantially a negative of the first predetermined amount; and a first digital-to-analog converter, DAC, in communication with the transformer, the first DAC converting a first digital signal in the first path to a first analog signal in the first path; a second path having: a coarse delay compensator, the coarse delay compensator delaying the digital input signal an integer number of clock cycles; and a second DAC in communication with the coarse delay compensator, the second DAC converting a second digital signal in the second path to a second analog signal in the second path; and a combiner, the combiner combining the first analog signal in the first path and the second analog signal in the second path, the combiner producing an output signal with at least one replica of the image spectra being substantially suppressed.