等效全向辐射功率(英語:equivalent isotropically radiated power,EIRP),或叫有效全向辐射功率(英語:effective isotropically radiated power,EIRP),是无线电通信领域的一个常见概念,它指的是天線在某个指定方向上的辐射功率,理想状态下等于發射器的发射功率乘以天线的增益。
其中表示發射器的发射功率,表示天线的增益。
单位为dBW,表示馈线上的损失。
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