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功  率            dBm          電壓（有效值）        電壓（峰峰值） 

1000000W=1MW         90              7.07 KV                 20 KV

100000W=100KW        80             2.236 KV              6.325 KV

10000W=10KW          70             0.707 KV                  2 KV

1000W=1KW            60             223.6  V              632.5  V

100W                 50              70.7  V                200  V

10W                  40             22.36  V              63.25  V

1W                   30              7.07  V                 20  V

100mW=10^-1W          20             2.236  V              6.325  V

10MW=10^-2W           10             0.707  V                  2  V

1mW=10^-3W            0              223.6 mV             632.46 mV

100μW=10^-4W         -10              70.7 mV                200 mV

10μW=10^-5W          -20             22.36 mV              63.25 mV

1μW=10^-6W           -30              7.07 mV                 20 mV

100nW=10^-7W         -40             2.236 mV              6.325 mV

10nW=10^-8W          -50             0.707 mV                  2 mV

1nW=10^-9W           -60              223.6μV             632.46 μV

100pW=10^-10W        -70               70.7μV                200 μV

10pW=10^-11W         -80              22.36μV              63.25 μV

1pW=10^-12W          -90              7.07 μV                 20 μV

100fW=10^-13W        -100            2.236 μV              6.325 μV

10fW=10^-14W         -110            0.707 μV                  2 μV

1fW=10^-15W          -120            223.6 nV             632.46 nV

100aW=10^-16W        -130             70.7 nV                200 nV

10aW=10^-17W         -140            22.36 nV              63.25 nV

1aW=10^-18W          -150             7.07 nV                 20 nV