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CC2650: CC2650 antenna selection

ahmed gheith
Prodigy 20 points
Part Number: CC2650
Other Parts Discussed in Thread: CC2640,

I'm designing a pcb for cc2650/cc2640 devices. the requirements is to have PCB antenna plus U.FL connector for external antenna. one of the antennas will be used depending on power consumption and range/performance. as the design is using a super capacitor so the main concern is to reduce consumption and increase range and performance as possible

for both options (PCB or external antenna) the antenna will be inside plastic enclosure and will be carried in user hands. 

So...

 - which PCB antenna shape should be used to optimize power/performance?

- I have space on the board to add differential antenna like in the cc25xx appnote (AN058), does differential antenna help reducing the power and increase performance? can i use with cc2650?

- for u.fl antenna is there any recommendation for external antenna type and shape?

  • 0
    TI__Guru**** 317180 points
    For 2.4 GHz operation we typically recommend either #2 or #11 described in www.ti.com/.../swra496a.pdf. The antennas have a 50 ohm interface (if counting the matching) and can therefore be used at any single ended 50 ohm interface.

    If the unit is going to be hold in a hand place the antenna a place where it's least likely to be covered by the hand. Also take this into account when tuning the antenna.

    For an antenna used on the u.fl. connector we don't have any specific recommendations.

    To get low power consumption vs performance you need an antenna with high efficiency.