We a designing a small pcb where a temperature sensor is placed close to a add-on wifi module.
The sensor has four traces connected to it power and i2c (3.3V, gnd, SDA, SCL).
The sensor needs to have some distance from other components (MCU,PSU, ect.) due to heat transfer and the pcb power planes are not routed below the sensor.
It is therefore nessacery the use relative long traces from the MCU and PSU to the sensor (about 30mm).
To minimize the 2.4GHz signal coupling onto the power traces going to the sensor, I have added four capacitors close to the sensor (22pF, 100pF, 1nF, 100nF). I was thinking about adding a small chip inductor, to make the filter even better.
But is this the way to go?
Or are there more efficient ways of eliminating the 2.4GHz signal?