CLEV6630B

mrmorais — Thu, 23 Oct 2025 15:21:57 GMT

I would like the impedance-matching schematic for the CLEV6630B antenna (30×50 mm). My product only came with the schematic for the 65×65 mm antenna.

Thank you for the response and for the schematic. However, I noticed the resistors on the board that came with my kit differ from the schematic. I removed one resistor to confirm: the schematic shows 1.6 kΩ, while my board has two 2.2 kΩ in parallel. Which one is incorrect—my schematic or the board that shipped with the kit?

Attached is a photo of the antenna.

Thank you in advance for the quick turnaround on my inquiry.

Re: CLEV6630B

EduardoZamora — Thu, 30 Oct 2025 15:51:19 GMT

Hello @mrmorais

Hope you are doing well.

The antennas included in that kit are already matched to work with the CLEV6630B board. If you are planning to use a custom antenna, it is necessary to perform proper matching and tuning according to AN11019 CLRC663 Antenna Design; or if you want to implement the antenna on a different reader, please refer to the corresponding antenna design and matching guide.

Regards,
Eduardo.

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CLEV6630B

Re: CLEV6630B