question about design LC filter!!

I wanna design a LC filter by myself. the center fre is 600MHz and BW is 40MHz. I use ansoft designer to sythesis the filter but I find the C is very small (about 0.3pf) which is not easy to realize. how can i transform the small C to some bigger?
I am very appreciated if someone give me the design result.

0.3pF is a standard value! you can buy it easily!

Hi,
since your bandwidth is narrow, you will need high Q, and thus C is smaller. But you can replace a 0.3pF with 0.6 in series with 0.6 if you really want to. I suggest u use ADS to simulate, better. I got attach a 3rd order chebychev with 0.1db ripple schematic. another way is you use 0.01db prototype, that will give you higher C i think.

regards

JY