Hello sir,
The range of λ/2 is between RX and RX, 2λ is between TX and TX in the guide.
In fact, I measure antenna configuration of PCB, the range is 1.9mm between RX and RX, 7.6mm is between TX and TX.
I make use of formula, λ/2 is 1.018mm at Rogers RO4835, 2λ is 4.074mm at RO4835.
Why do the measurement have different?
Regards