A question regarding DC blocker

[venn_ng]

Hi,

I am in confusing whether to use a discrete ac coupling capacitor on the PCB board or use a DC blocker connector like the one shown below for a high frequency signal of 10GHz
https://www.fairviewmicrowave.com/images/productPDF/SD3235.pdf

Which one is better?

 

[barry]

What are you confused about? It depends on your pcb material, your cap, your layout, etc

 

[venn_ng]

What are you confused about? It depends on your pcb material, your cap, your layout, etc

No. I mean, I basically have the option to use either the discrete capacitor or use the connector.
I would like to use the DC blocking connector. It shouldn't be an issue if I don't use the discrete ac coupling capacitor in that case, right?

 

[barry]

Without having ANY idea of what's on the other side of that DC block, sure, it should work perfectly.

 

[venn_ng]

This is my circuit


I have 4 high frequency signals at around 3 to 6 GHz. I don't want the DC to pass through. There are two options. Either I can manually place discrete capacitor (option 1) or use a DC blocking connector (option 2) after the SMA, as shown below.

I am planning to go ahead with Option 2 with a DC blocker that works at these frequencies. This should be okay, right?

Thanks!

 

[barry]

You do realize that a DC block is simply a capacitor mounted in a coaxial housing, right?

 

[venn_ng]

You do realize that a DC block is simply a capacitor mounted in a coaxial housing, right?

Hi Barry, Ya I do. I just wanted to confirm in case they don't have any fancy circuit inside the DC blocker.