cert_exam:tech_radio_op_1:b:freq:i-linear_antenna_directivity
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| cert_exam:tech_radio_op_1:b:freq:i-linear_antenna_directivity [2020/01/02 21:22] – fu | cert_exam:tech_radio_op_1:b:freq:i-linear_antenna_directivity [2020/01/02 21:25] (current) – [線状アンテナの指向性] fu | ||
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| * 微小ダイポールの指向性関数は $sin \theta$ | * 微小ダイポールの指向性関数は $sin \theta$ | ||
| * 半波長ダイポールの指向性関数は近似的に $\frac{cos(\frac{\pi}{2} cos \theta)}{sin \theta} $ | * 半波長ダイポールの指向性関数は近似的に $\frac{cos(\frac{\pi}{2} cos \theta)}{sin \theta} $ | ||
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| + | 微小ダイポールとは、波長に対してアンテナの長さが微小な長さのアンテナ | ||
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| + | 参考サイト | ||
| + | http:// | ||
| ===== 出題履歴 ===== | ===== 出題履歴 ===== | ||
cert_exam/tech_radio_op_1/b/freq/i-linear_antenna_directivity.1577967744.txt.gz · Last modified: by fu · Currently locked by: 74.7.241.13,172.18.0.1