| 摘要 |
It is possible to detect a reception signal at a high speed. A wave detection device includes: a first signal output unit for outputting a first signal s[n] which is a sum of a digital input signal subjected to A/D conversion and an output from a feedback signal output section; a second signal output unit for outputting a second signal s[n-1] which is the first signal s[n] delayed by one sampling timing; and a feedback signal output section for subjecting the second signal s[n-1] to a predetermined calculation. When n=N-1, a frequency region conversion section reads out the first signal s[N-1] and the second signal s[N-2] from registers and subjects them to a predetermined calculation, thereby obtaining the input signal subjected to DFT. Since the wave detection device has a simple configuration, it is possible to rapidly detect the reception signal which is an input signal of the wave detection device.
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