Basic identifiacation in layout

[HariHerekar]

Can someone help me understand how the DC supply is given to this layout ? I can identify the Power amp pre driver, driver and distributed matching networks, but dont know how the
DC rails are labelled here. Any idea ?

 

[BigBoss]

Each transistor has own its power supply pins. Some of them are on upper side, some are on lower.
Also, Drain and Gate supplies are tied to different pins.

 

[HariHerekar]

Thank you ! Just to be clear, VDS,VGS and ground pins are all together right ? (On top and bottom)

 

[D.A.(Tony)Stewart]

If you know how to search Google by images then you will find more answers on RG site.

https://www.researchgate.net/publication/370535765_26-and_4-W_E-Band_GaN_Power_Amplifiers_With_a_Peak_Efficiency_of_22_and_153

 

[HariHerekar]

wow thank you, will keep that in mind.