1dB 压缩点详解

非官方的风格

Linearity
Active RF devices are ultimately non-linear in operation. When driven with a large enough RF
signal the device will generate undesirable spurious signals. How much spurious generated
by the device is dependant on the linearity of the device.
If an amplifier is driven hard enough the output power will begin to roll off resulting in a drop of
gain known as gain compression. The measurement of gain compression is given by the 1dB
gain compression point.
1dB Compression Point
This parameter in another measure of the linearity of a device and is defined as the input
power that causes a 1dB drop in the linear gain due to device

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