electroRF
Member
Hi,
I'm trying to understand the following design of an AGC unit.
This AGC unit forms a CLPC from the PA's output to the PA's BIAS network,
and its duty is to control the BIAS network of the PA in order to maintain a desired output power of the PA.
The PA's input signal frequency is 10MHz.
The AGC receives:
- vin - Output voltage of PA.
- vset - DC Control signal that represents desired output power level of the PA.
and the AGC outputs:
- vapc - Control Signal that goes to the BIAS network of the PA.
View attachment 65279
I'll be happy to receive your inputs about this design.
I believe that vctl should be a DC voltage, that represents the PA's output voltage, but instead I get a "dirty" signal.
Thank you very much for any help!
I'm trying to understand the following design of an AGC unit.
This AGC unit forms a CLPC from the PA's output to the PA's BIAS network,
and its duty is to control the BIAS network of the PA in order to maintain a desired output power of the PA.
The PA's input signal frequency is 10MHz.
The AGC receives:
- vin - Output voltage of PA.
- vset - DC Control signal that represents desired output power level of the PA.
and the AGC outputs:
- vapc - Control Signal that goes to the BIAS network of the PA.
View attachment 65279
I'll be happy to receive your inputs about this design.
I believe that vctl should be a DC voltage, that represents the PA's output voltage, but instead I get a "dirty" signal.
Thank you very much for any help!