Arrow's Yagi-Uda antenna array

1

I’m considering working with the Arrow antenna array, which is a set of Yagi-Uda antennas each with very strong unidirectional sensitivity.

My question is: how does such focused unidirectionality work in a phase-coherent antenna array like the KrakenSDR?

Surely a decent strength signal needs to be had on all the antennas to be able to compute the relative phase shifts, and thereby the signal direction? Won’t a pentagonal array of antennas each with narrow HPBW have weak signal from all but the front-facing one, and no signal at all from the back-facing set?

If anyone knows of any literature on the use of Yagi-Uda antennas in phase-coherent arrays it would be a big help!

2

That array is not a set of Yagi-Uda antennas. It’s omnidirectional dipoles.

The image might be a little misleading because you’re only meant to have one set attached at a time.

But yes you are right, using an array of Yagi’s might not work that great because each element does need reception, and the ones pointing away would receive poorly. So that it why omnidirectional antennas are used.

3

Ooooh I see, it’s three sets of 5 simple dipoles at for different target frequencies. Thanks for the clarification!