15 lines
528 B
Markdown
15 lines
528 B
Markdown
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---
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title: PAE
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updated: 2022-05-16 12:09:15Z
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created: 2022-01-10 03:35:59Z
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---
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# 定义
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PAE:Power Added Efficiency，即功率附加效率，
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$PAE={P_{out} - P_{in} \over P_{dc}}$，
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即为射频输出功率与输入功率之差与直流电源功率之比
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# 计算
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是功率之比，单位**均为mW或W**，不可与dBm混合计算，分子项是**功率之差==而不是==增益**，$P_{out} - P_{in} \ne Gain$
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# 示例
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输入功率10dBm，输出40dBm，供电28V/0.8A，则
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$PAE={(10^4-10^1)/1000\over{28*0.8}}=0.446=44.6\%$
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