AC coupling capacitor 200MHz to 2 GHz

[luky315]

I am looking for an AC coupling capacitor (0603, if possible) with the lowest possible loss (we have a very weak signal) in the frequency band from ca. 200Mhz to over 2 GHz. I have a few unlabeled 10nF Caps in my drawer which perform significantly better than all others caps I have laying arround and I found out that a nickel plating can lead to higher losses. So which component should I try to get the lowest losses?

[Odysseus]

There's the 530L and 520L 0402 caps from ATC.

You can also dig through Murata's SimSurfing tool, which has insertion loss data on most of their caps.

[luky315]

The ATC caps are looking good, thanks. I was looking in the wrong category (RF caps) but "Broadband" seems to be the correct category