Recent content by mudassarhanif

Basically, i am use this SPDT as a driver for pin diode and pin diode works as a switch. now i need to operate that between 300 Mhz-3Ghz... so i need some equations to calculate the values of elements using in SPDT inorder to drive the pin diode to switch on and off

how much low that would be? approximately zero? how can i calculate the values of capacitors and inductors involve in this circuit?

any body who can tell me how to calculate the values of resistors and capacitors in single pole double throw circuit?

the thing is that i don't knw how it works? consider there is a frequency (let say 3Ghz), it will pass through the diode and to the attenuator circuit. now let say that the incoming frequency is 2Ghz and it is the required frequency...the switch which is placed before the attenuator circuit...

at the moment i am just trying to attenuate it, so there is no need of stepping for the time being. you are right that can be a filter but how can i put pin diode which works as a switch and pass the frequency through the transmission line in off state? there is no issue of switching rate.

i am designing attenuator with tee and pi attenuator circuit. the pin diode switch which i want to use here is work as follow a) when the switch is open, then all the frequency pass through transmission line bypassing attenuator. b) when switch is closed, then it will pass through attenuator...

@ berkeman can u give me some more specific details?

any bdy who can tell me how we can calculate the values of low pass filter which is used to on and off (to switch) the pin diodes?

i am designing a stepped attenuator using pin diode as a switch in microwave office. i am having difficulty in using pin diode as a switch. i knw it is operate in forward bias and open in reverse bias. if i am giving a rf signal between 300 Mhz to 3 Ghz then how can i switch it to reverse bias...