| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a radar device wherein a lot of mixers can be driven by the output of a single oscillator, and the improvement of resolution and the enlargement of a detection range can be contrived. SOLUTION: Receivers 16, 18, 20 having mixers 30 for mixing a local signal with a receiving signal from a receiving antenna 28 and detecting it and a high frequency switch 22 for roundingly supplying the local signal LS composed of power-distributing a high frequency signal S from a high frequency oscillator 10 to either of the receivers 16, 18, 20 are provided. A supply period of the local signal per receiver is shortened, the signal level of the supplied local signal is not lowered, and sensitivity of the mixer can be maintained good. Consequently, the distribution number of the local signal LS is increased at the high frequency switch 22, and since the number of the receivers can be increased, improvement of detection accuracy and enlargement of a detection range can be contrived easily.</p> |
