RF signal from drain to source

[kazim]

hello friends

can i pass and stop an RF signal from drain to source by just make gate on and off.

 

[kabiru]

No,because is going to affect the frequency of your signal but you can use analog swich like CD4016, you can refer to it's datasheet for more info.

 

[kazim]

can you explain how it will effect the signal. i mean it will just be working as a simple switch

 

[kabiru]

Hi,if you are using a mosfet as a follower the gate has to be saturated for it to act as a swich,their will be a voltage drop which will affect the amplitude of the signal.

 

[biff44]

There are a lot of microwave switches that are made with fets as the controlling element. With the right fet, the parasitic capacitance is not a big problem to 18 GHz.