Phase-shifted sampling module and method for determining filter coefficients

A phase-shifted sampling module for sampling a signal, the phase-shifted sampling module comprising:

• a primary sampler circuit, an ADC circuit, and an equalization circuit,
• the primary sampler circuit comprising an analog signal input, a first signal path, and a second signal path,
• wherein the first signal path comprises a first analog sampling unit configured to sample an analog input signal received by the analog signal input, thereby generating a first pre-sampled analog input signal,
• wherein the second signal path comprises a second analog sampling unit configured to sample the analog input signal in a phase-shifted manner compared to the first analog sampling unit, thereby generating a second pre-sampled analog input signal,
• wherein the ADC circuit comprises a first analog-to-digital converter associated with the first signal path, wherein the first analog-to-digital converter is configured to sample the first pre-sampled analog input signal, thereby generating a first digital output signal,
• wherein the ADC circuit comprises a second analog-to-digital converter associated with the second signal path, wherein the second analog-to-digital converter is configured to sample the second pre-sampled analog input signal in a phase-shifted manner compared to the first analog-to-digital converter, thereby generating a second digital output signal, and
• wherein the equalization circuit comprises a primary sampler equalizer sub-circuit, wherein the primary sampler equalizer sub-circuit is configured to compensate low-frequency mismatches between the first signal path and the second signal path based on the digital output signals.