Re: Antenna design
Posted: Fri Jun 17, 2022 1:35 pm
You are right. The pins could make problems, but only in the layout. We don't have any signals on the WiFi-frequency about 2.4 GHz, You would have problems on the upper side already. These waves don't have any effect, except in the antenna.
For me every antenna looks linear, because it's magnetic field only has one direction. It has a north- and a south-pole, You can't generate two fields with only one antenna. The inverted F-antenna simply is a misconception and hurts me in the eyes.
The distance is relevant for speed, the length and direction of the antennas, something between, noise caused by reflections, and Your self-made interference with phase-drift.
Please don't get me wrong, i'm trying to help.
With my formula my design looks better. I just connect the two end-points and get my effective antenna, a simple vector-addition. The inverted F-antenna makes the calculation a little more complicated. I have two diagonals, the effective antenna should lay somewhere between with an interference. Two points seem to be connected to the transceiver, because interferences are bad for signal-quality.
It is just not possible to get a signal, having two effective antennas in a plane.
Again, please don't get me wrong! The WiFi on the ESP32 is working fine, i even get a signal through thick walls.
For me every antenna looks linear, because it's magnetic field only has one direction. It has a north- and a south-pole, You can't generate two fields with only one antenna. The inverted F-antenna simply is a misconception and hurts me in the eyes.
The distance is relevant for speed, the length and direction of the antennas, something between, noise caused by reflections, and Your self-made interference with phase-drift.
Please don't get me wrong, i'm trying to help.
With my formula my design looks better. I just connect the two end-points and get my effective antenna, a simple vector-addition. The inverted F-antenna makes the calculation a little more complicated. I have two diagonals, the effective antenna should lay somewhere between with an interference. Two points seem to be connected to the transceiver, because interferences are bad for signal-quality.
It is just not possible to get a signal, having two effective antennas in a plane.
Again, please don't get me wrong! The WiFi on the ESP32 is working fine, i even get a signal through thick walls.