让我们来看看价值500美刀的lna内部是啥样的……
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description:
low noise amplifier performance data
frequency: 2.0 - 4.0 ghz
gain: 25.0 db min (flatness 1.0)
noise figure: 2.5 db max
p1db: 15 min
vswr: 2.0 input max, 2.0 output max
power supply: 12.0 volts dc 100.0 ma
operating temperature: -30.0 - 70.0 °c
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