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MUX for RFID 13.56MHz antenna

Gilad Kapelushnik
Prodigy 10 points

Other Parts Discussed in Thread: CD74HC4067, TMUX8109, TMUX1308

Hi,

Working on a project that involves an array of RFID (HF 13.56Mhz) antennas using a single RFID transceiver.

In-order to switch between the antennas I'm looking for a 1:8 (or more) RF MUX.

As the frequency is relatively low, I was looking into IC TMUX8109 as its spec specifies a bandwidth of 380Mhz or IC CD74HC4067 with a bandwidth of 89Mhz.

Catalog parts are fine and looking for cost effective components.

Would these ICs be suitable for switching 50Ohm 13.56Mhz RFID signal? If not, plz recommend other 1:8 (or more) MUX ICs that are suitable for the job.

Any assistance would be appreciated.

Tnx

Gilad.

  • 0
    TI__Genius 10552 points

    Hi Gilad,

    Thanks for reaching out here! Do you have any voltage requirements that need to be met in addition to the 13.56 Mhz requirement? Since our devices are passive switches, just about any device that can handle ~2-3x the bandwidth you're trying to pass will be able to do so without issue. I ask since you mentioned both TMUX8109 and CD74HC4067, the former of which is a high voltage part. The CD74HC4067 as you mentioned is a great, cost effective part that supports low voltage. If cost is a big factor here, then I would likely lean towards something like the TMUX1308 here - a 1:8 switch with high bandwidth and very low cost. Does package footprint matter here as well? 

    Regards,

    Alex