mehul87
Newbie level 3
Power Amplifer Design
Hey,
I have to design a power amplifier in 130 nm technology witht he following specs
Power Output: > 23dBm (at PA output)
Total Power Consumption: < 0.5W @ 16dBm CW output power
RF Input Signal @ 2.45GHz : 1Vp-p sinusoid if single ended
-- differential or single ended 1.414Vp-p if differential
Input Source Impedance 50 single ended,
Harmonic Distortion: all components < -30dBc (at antenna)
while running at full rated CW output power
Gain Flatness (AM-AM disto): +/- 0.5dB from 0dBm - 23dBm out
Phase Flatness (AM-PM disto): +/- 5 degrees from 0dBm - 23dBm out
Guaranteed Stability Range: VSWR < 4:1
The thing is i know how to design the ouput stage of the power amplifer using impedance transformation. I am guessing that such an amplifer needs more than one stage i.e a driver stage. I cant figure out how to go about desiging the driver stages. Does the driver stage increase the voltage gain of the input signal or can i distribute the power gain over the different stages. Any suggestions and help would be greatly appreciated.
Hey,
I have to design a power amplifier in 130 nm technology witht he following specs
Power Output: > 23dBm (at PA output)
Total Power Consumption: < 0.5W @ 16dBm CW output power
RF Input Signal @ 2.45GHz : 1Vp-p sinusoid if single ended
-- differential or single ended 1.414Vp-p if differential
Input Source Impedance 50 single ended,
Harmonic Distortion: all components < -30dBc (at antenna)
while running at full rated CW output power
Gain Flatness (AM-AM disto): +/- 0.5dB from 0dBm - 23dBm out
Phase Flatness (AM-PM disto): +/- 5 degrees from 0dBm - 23dBm out
Guaranteed Stability Range: VSWR < 4:1
The thing is i know how to design the ouput stage of the power amplifer using impedance transformation. I am guessing that such an amplifer needs more than one stage i.e a driver stage. I cant figure out how to go about desiging the driver stages. Does the driver stage increase the voltage gain of the input signal or can i distribute the power gain over the different stages. Any suggestions and help would be greatly appreciated.
