Hi!I got a simple but awkward problem.
TGF2021-04 datasheet says the load reflection coefficient per 1mm unit pHEMT cell at 10 GHz is 0.852 ∠ 172.5≈4+j2,TGF2021-04 is a 4mm device(four cell ),So,What is the best load impedence when I connect the four cell together?
(4+j2)*4 or (4+j2)/4?
Hi!I got a simple but awkward problem.
TGF2021-04 datasheet says the load reflection coefficient per 1mm unit pHEMT cell at 10 GHz is 0.852 ∠ 172.5≈4+j2,TGF2021-04 is a 4mm device(four cell ),So,What is the best load impedence when I connect the four cell together?
(4+j2)*4 or (4+j2)/4?
Theoritical analysis won't work for this configuration because of loading effects of other devices onto one single device.
Connect 4 device in parallel and get include the realistic bonding wire models into simulation setup and make a Load Pull simulation and observe PAE and MaxPower contours on Smith Chart.
Because Optimum Load Impedance is critical and it should include all parasitic and interconnection effects of the configuration.