Would a ground plane/traces impact NFC antenna performance?

Electrical Engineering Asked by Yonatan Avhar on December 14, 2020

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.

One Answer

I recommend checking it in some finite element electromagnetic simulator, like Microwave Studio or openEMS, but it may be faster to actually make the PCB and test.

It is hard to say right off the bat if your ground and power planes are going to act as shielding or reflectors. My guess is that they are actually going to act more like reflectors.

Answered by Kristoffer_S on December 14, 2020

Add your own answers!

Related Questions

Using the fast adders circuits in FPGA

1  Asked on February 1, 2021 by yogi-bear


Crosstalk in PCB layout

1  Asked on February 1, 2021 by walid24


problem assigning a zero-length array port in vhdl

1  Asked on February 1, 2021 by kjgregory


Basic ternary circuit to light three LED’s?

5  Asked on January 31, 2021 by isynthetixx


Digital gain control with a digital pot?

4  Asked on January 31, 2021 by vini_i


ESD clamping voltage in SIMCard interface too high

1  Asked on January 30, 2021 by cbagusjk


where is the /models folder in the eagle directory?

0  Asked on January 30, 2021 by user2


SPDT Switch in Logisim

2  Asked on January 30, 2021 by shriekyphantom


STM32F4 SPI Tx Data Register Problem

0  Asked on January 30, 2021 by ihk


Raising Amperage

3  Asked on January 29, 2021 by terrel-ross


Schematic for a lipo battery bleeder overcharge protector

2  Asked on January 28, 2021 by dylan-873


PCB Design Review: Impedance Matching & Termination Resistors

2  Asked on January 28, 2021 by codemonkey


Ask a Question

Get help from others!

© 2023 All rights reserved. Sites we Love: PCI Database, UKBizDB, Menu Kuliner, Sharing RPP