Amir.Sk
Newbie level 6
Hi everyOne!
first things first: I'm new to this stuff!
I'm trying to design an amplifer with a GaAs Design kit.
CAD : ADS
frequency = 1 tone 10.7 GHz
tried to bias it for Class A operation.
stabilized it.
now I'm trying to do load pull and source pull.
I'm just wondering to know the proper range for ZL and ZS?! I mean , I'm getting something from source pull to place at source. but it seems unusual!
please take a look at the procedure :
1-DCIV simulation => class A : VD = 8 & VG = -.5 has been selected.
2- Stability Check , and making it stable with L&S stabling circles : push 9GHz circle back.
3- Load Pull and then load pull and getting 52 +j*52 for the Z-Source which made me think that HOW SHOULD I KNOW THAT THIS IS WOULD BE FINE? for a 150um Gate (UG = 75um and NOF = 2) GaAs Transistor?!!
Thank you for Your time!
Surely let me know what basic things I should learn
first things first: I'm new to this stuff!
I'm trying to design an amplifer with a GaAs Design kit.
CAD : ADS
frequency = 1 tone 10.7 GHz
tried to bias it for Class A operation.
stabilized it.
now I'm trying to do load pull and source pull.
I'm just wondering to know the proper range for ZL and ZS?! I mean , I'm getting something from source pull to place at source. but it seems unusual!
please take a look at the procedure :
1-DCIV simulation => class A : VD = 8 & VG = -.5 has been selected.
2- Stability Check , and making it stable with L&S stabling circles : push 9GHz circle back.
3- Load Pull and then load pull and getting 52 +j*52 for the Z-Source which made me think that HOW SHOULD I KNOW THAT THIS IS WOULD BE FINE? for a 150um Gate (UG = 75um and NOF = 2) GaAs Transistor?!!
Thank you for Your time!
Surely let me know what basic things I should learn