SIM900 RF Design help

[DrBudz]

Hi friends,

I have no expirence with RF design, so I need your help.
I want to connect GSM module SIM900 to SMA connector, and then to connect GSM antenna to SMA connector.
In SIM900 datasheet is written that the RF trace should have 50ohm impedance.
Impedance of the SMA connector is 50ohm. I need help to design trace from module's RF pin to the SMA connector.
Does that trace need to be 50ohm impedance, also?
Is there any required distance between RF trace and ground plane?

It's a 2 layer board.
Here is the image of the RF trace from module to SMA connector

Thank you!
Regards!

 

[crackerboy]

Did you search Edaboard?

May be look first:

1-https://www.edaboard.com/threads/233398/
2-GPS Module Antenna and RF Layout Design Guidelines - TomTang