Q: CC2541 with two antenna

AFM

Other Parts Discussed in Thread: CC2538EM-RD

hi,

we are working on project based on cc2541, i want to know if it is possible to use two antenna : ceramic and IFA PCB on the same board with 0R separation resistor ?

the perfermance of antenna will be lost in this case ?

thanks,

over 9 years ago

0 Peder over 9 years ago

TI__Expert 6995 points

Hi Mokh,

If you mean that you have two antennas that you can choose between with a 0-Ohm resistor, that will work fine. Please see http://www.ti.com/tool/CC2538EM-RD for an example of that.

Peder

0 AFM over 9 years ago in reply to Peder

Intellectual 560 points

Peder, even using ceramic antenna (ex: 2450at42a100e) instead of the ufl connector ?

0 Eirik V over 9 years ago in reply to AFM

TI__Guru 56590 points

Hello,

It should work fine, but the layout might be a critical factor here. Ideally you want to place the two antennas at different sides of the PCB and follow the design recommendation for each of the two antennas. You will most likely also need two different matching networks to the antennas.

0 AFM over 9 years ago in reply to Eirik V

Intellectual 560 points

thanks all !

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Q: CC2541 with two antenna