DNA2683
Advanced Member level 4
Hi All,
I designed a small PCB with BLE (2.4Ghz antenna ). Just for make thing clear i didn't designed the RF part only the digital.and im not an RF guy so ill be glad to get some help from you guys.
I using TI CC2640 as transceiver and antenna on chip . when i send the board for EMC test the lab told me that i have few harmonics higher then 40dbm (maximum power aloud in 40 dbm) i added some pictures of the results.
The RF circuit pleased on the CS(layer 1) with grounding layer (layer 2) .The impedance of the RF transmutation line is 50 hoam.
what can be the source of this harmonics ? how can i trace the source?
ill be glad for your help guys, if there is more information that needed please ask and ill upload it.
TNX
I designed a small PCB with BLE (2.4Ghz antenna ). Just for make thing clear i didn't designed the RF part only the digital.and im not an RF guy so ill be glad to get some help from you guys.
I using TI CC2640 as transceiver and antenna on chip . when i send the board for EMC test the lab told me that i have few harmonics higher then 40dbm (maximum power aloud in 40 dbm) i added some pictures of the results.
The RF circuit pleased on the CS(layer 1) with grounding layer (layer 2) .The impedance of the RF transmutation line is 50 hoam.
what can be the source of this harmonics ? how can i trace the source?
ill be glad for your help guys, if there is more information that needed please ask and ill upload it.
TNX