Sherry1
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I am using a GSM (900/1800MHZ) and 1.5GHz external antennas connecting to the GSM module.
- The U.FL connector is on the bottom of PCB
- The Module is on top of PCB
- And the feed trace on top layer will use a Through hole via in PCB to go to bottom later and connect to U.FL (surface mount connector)
My question is , How much an Inductance of a via is significant at these frequencies. Will I need to revise my impedance matching network ?
Note: My PCB is small in size(5cmx 5cm)
- The U.FL connector is on the bottom of PCB
- The Module is on top of PCB
- And the feed trace on top layer will use a Through hole via in PCB to go to bottom later and connect to U.FL (surface mount connector)
My question is , How much an Inductance of a via is significant at these frequencies. Will I need to revise my impedance matching network ?
Note: My PCB is small in size(5cmx 5cm)