Wideband antenna and RF module

[guliveron]

Hello!

I want to ask for advice.
Is it important to use, for examle, GSM rf module with related 2 band antenna or I could also use some wideband structure, which covers both of bands?
Maybe somebody know if these unnnecessary bands are filtered in rf modules?

Thanks!

 

[vfone]

Yes, the unwanted bands (and frequencies) are filters out by front-end filters, so you can use a wideband antenna.