Arbitrary Waveform Generator's Power
时间:04-06
整理:3721RD
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Hi,
I have a rather silly question.
My lab is using a Tektronix AWG7102 and I can control the waveform's 2.8 GHz amplitude but I do not know the output power.
The signal is mixed with a LO (14 GHz, 17 dBm) and I need to confirm my power measurements at the mixer's output.
I have checked the datasheets and manual but it only says that voltage maximum is 2 Vp-p but nothing about power.
Thank you in advance.
I have a rather silly question.
My lab is using a Tektronix AWG7102 and I can control the waveform's 2.8 GHz amplitude but I do not know the output power.
The signal is mixed with a LO (14 GHz, 17 dBm) and I need to confirm my power measurements at the mixer's output.
I have checked the datasheets and manual but it only says that voltage maximum is 2 Vp-p but nothing about power.
Thank you in advance.
First convert voltage from peak-peak to rms, then calculate power. Impedance is usually 50 ohm for RF.
Vrms = Vpp/(2*sqrt(2))
Power = Vrms^2/impedance
Understood. Thanks! Someone told me something entirely different which made me all confused..
and 0 dBm = 1mW @50Ω = √.02 = 141 mV rms = 400mV pp i think
