I am building a PCB business card with an NFC chip and a WS2812B LED display (powered by a USB-C port, NFC is not connected to the LEDs). Right now I have a ground plane on the side of the antenna (not connected to either the NFC chip nor the antenna), and a +5V plane on the opposite side of the antenna (also not connected to the NFC circuit). Here are screenshots from both sides:
Would the planes interfere with the antenna in any significant way? And should I change the grid pattern to a normal plane? (The grid was a cosmetic choice) I am using this chip for NFC, and the antenna is the same as the antenna from this tutorial.