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My new DIY Planar disk antenna

Posted: Mon Nov 05, 2018 12:09 pm
by Jekko
Meet my new DIY planar disk antenna :D

Image

I kept 2 millimeters of GAP and the dishes are 46cm diameter.

Unfortunately i don't have any hardware to measure the performances of the antenna, but it seems to work quite good, especially in the 400mhz band.

Bye all!

Re: My new DIY Planar disk antenna

Posted: Mon Nov 05, 2018 8:50 pm
by rtlsdrblog
Nice build!

Re: My new DIY Planar disk antenna

Posted: Wed Nov 07, 2018 7:55 am
by HighSNR
That should work well. You basically have two radiation modes. These modes should seemlessles transistion between each other.

1st is a fat dipole that will cover the lower bands. Lower frequency will be dictated by the total height of the antenna(lambda/2)

2nd is like a Vivaldi antenna that will give more gain in the plane of the disk. It will be more directional at higher frequencies. I expect the upper frequency to be above 6ghz.