eladg said:
pengboy said:
hello,
I am tying to measure the power efficiency of a RF power amplifier.
what kind equipment should I use for measuring the power from RF input and output?
How to measure the power from the DC supply?
Thanks a lot!!!
eff = power out /(power in +power dc) *100
u need coupler to measure the power in and power meter
u need power meter (and att as requre)
and u need current meter and voltmeter
Hello,
What I don't uderstand is:
The current from the DC supply is also varying with a RF fundamental frequency. what kind current meter should i use?
power dc= Vdc*Idc
how to extract the Idc from the current mesurements.
Will the DC current meter gives the average current automaticly?
Thanks a lot