Hi All,
I am planning to build a double biquad antenna with a centr frequency around 5.4 GHz. Several people state that the optimal distance between the driven element and the reflector should be one quarter wavelength, but intuitively I think that would mean that the reflected signal will be in opposite phase compared to the directly received signal, effectively cancelling the two signals.
I think the optimal distance should be one half wavelength.
Could anyone tell me if I am correct, and if I am indeed wrong, the reason why 1/4 wavelength is the correct distance?
// Steen