frequency versus pcb material

Hello there

Can anyone give me some advice or perhaps direct me to the literature. I recently designed a UHF receiver that doesnt work. The problem I believe is both parasitic capacitance to ground and inductance to ground issues. I have been able to import the design into momentum and pretty much redesign everything to get the board working. I would like to know what pcb substrate materials and thicknesses are recommended for particular frequencies. My design was on 1.6mm FR4 pcb. At 450MHz would this pcb material and thickness be appropriate?

Thankyou.

http://www.fairchildsemi.com/product...ip/fr4loss.pdf

it should be OK

Hi Darcy,
Dont worry , it wiil function enough good, think pls on the lot of door opener at 433MHz & RFIDs up to 8-900MHz or even at 2.4GHz the millions of units are working best ...
Dont forget, that these FR4 Study has over lnegth of signal lines to your application, than they checked signals for distances between 0.5 and 1.x meter & at frequencies of 1.2 & ca 2GHz!....
For your applications are only paar percent less signals to assume_after some centimeter...
Greetings!
K.

http://www.taconic-add.com/pdf/techn...ematerials.pdf

Thanks guys. Very helpful