| 摘要 |
A demodulator includes a sampler and a trigger unit. The sampler is configured to sample a carrier signal based on a trigger signal to obtain a demodulated signal. The trigger unit is configured to detect a zero crossing of the carrier signal or an extreme value of an amplitude of the carrier signal. Further, the trigger unit is configured to provide the trigger signal based on the detected zero crossing or the detected extreme value, so that the carrier signal is sampled by the sampler with a predefined phase shift to the detected zero crossing or the detected extreme value. The predefined phase shift is larger than 30° plus an integer multiple of 90° and lower than 60° plus the same integer multiple of 90° in reference to the carrier signal.
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