My new DIY Planar disk antenna

Discuss commercial and home made antennas.
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Jekko
Posts: 12
Joined: Wed Oct 17, 2018 9:39 am

My new DIY Planar disk antenna

Post by Jekko » Mon Nov 05, 2018 12:09 pm

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!

rtlsdrblog
Site Admin
Posts: 1859
Joined: Mon Nov 19, 2012 11:54 pm

Re: My new DIY Planar disk antenna

Post by rtlsdrblog » Mon Nov 05, 2018 8:50 pm

Nice build!

HighSNR
Posts: 23
Joined: Mon Sep 18, 2017 8:14 am

Re: My new DIY Planar disk antenna

Post by HighSNR » Wed Nov 07, 2018 7:55 am

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.

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