buffallo
Member level 1
Hello all,
I have a question on one particular implementation of high power RF/MW amplifier.
Is it possible to achieve large output power by summing the outputs of multiple "low" power amplifiers (i.e. using power combiners, etc). What happens with output voltages/currents if the load is not matched to the output?
My main idea is that I want to make a 40 dBm amplifier, which should be able to work and withstand big output mismatch conditions. But somehow I am confused by the problem of voltages/currents. That is, at 50 ohm load there are ~23 volts rms over the load. If it is disconnected (Rload -> inf) the voltage should rise to approx 46 V). Does this mean that each of the 'low' power amplifiers should be powered with this voltage?
I am not really sure that I managed to describe my problem, but any comment on it would be appreciated!
Cheers,
D
I have a question on one particular implementation of high power RF/MW amplifier.
Is it possible to achieve large output power by summing the outputs of multiple "low" power amplifiers (i.e. using power combiners, etc). What happens with output voltages/currents if the load is not matched to the output?
My main idea is that I want to make a 40 dBm amplifier, which should be able to work and withstand big output mismatch conditions. But somehow I am confused by the problem of voltages/currents. That is, at 50 ohm load there are ~23 volts rms over the load. If it is disconnected (Rload -> inf) the voltage should rise to approx 46 V). Does this mean that each of the 'low' power amplifiers should be powered with this voltage?
I am not really sure that I managed to describe my problem, but any comment on it would be appreciated!
Cheers,
D