How multi gate finger reduces the gate resistance?

[santhosh.mandugula]

How multi gate finger reduces the gate resistance?

what are impacts of using multi gate fingering technique on delay and power, because the overall capacitance increases (G-S and G-D cap inc.s), is the delay is more if we use multi-gate fingering than normal transistor???

thanks in advance!!

 

[vijaykarnam]

by doing multigate contacts, all contact resistance will be in parallel that cause to decrese the gate resistance..

Added after 28 seconds:

by doing multigate contacts, all contact resistance will be in parallel that cause to decrese the gate resistance..

 

[solidstate]

Not only that, since the length per arm also drops, the resistance per arm goes down by a factor 2 as well; Splitting W/L into 2X 0.5W/L will thus yield about 4x decrease in Rgate