obsidian-notes/射频/名词解释/PAE.md
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title updated created
PAE 2022-05-16 12:09:15Z 2022-01-10 03:35:59Z

定义

PAE:Power Added Efficiency即功率附加效率 $PAE={P_{out} - P_{in} \over P_{dc}}$ 即为射频输出功率与输入功率之差与直流电源功率之比

计算

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

示例

输入功率10dBm输出40dBm供电28V/0.8A,则 PAE={(10^4-10^1)/1000\over{28*0.8}}=0.446=44.6\%