WiFi Antennas Reid Palmeira EE496 Design Review Design Considerations Effectiveness SNR improvement Ideal Distance of Mobile from Base Station Size Portability Storage Cost and Build Time Realistic use Accessibility Legal Issues If the FCC comes knocking, be French: run away!
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The focus of the parabola is calculated as
1/f = 1/da + 1/dm
f = focal point distance
da = distance of parabola from the AP’s antenna
dm = distance of mobile
The mobile will see better signal strength at distances that are multiples of the ¼ λ it is operating at. But putting it near the focal point will improve the signal quality as well
Field strength is maximized only in the forward directions which helps improve security but as with the 6” design, the field strength varies with distances from the focus of the array.