Half power point

（重定向自Half power frequency）

The half power point of an electronic amplifier stage is that frequency at which the output power has dropped to half of its mid-band value. That is a level of -3 dB. The half power point is a commonly used specific definition of cutoff frequency, although not the only one.

单词	Half power frequency
释义	Half power frequency 英语百科 Half power point （重定向自Half power frequency） The half power point of an electronic amplifier stage is that frequency at which the output power has dropped to half of its mid-band value. That is a level of -3 dB. The half power point is a commonly used specific definition of cutoff frequency, although not the only one.
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