PY2BS patch (adapted to 2.437ghz)

[clanon 258]

I'd never found a good feed for DEEP DISHES ( i have a 1,26 m , 0.31 m deep dish F/d 0.25  ) THIS IS IT

This brasilian  colleague designed an small patch for 432 MHZ satélite double polarization (i only needed ONE)

What's most important to me are the 180 degrees of illumination at about -6 db of gain...

 -6dB beamwidth of around 180 deg (good for f/D ratios 0.25 (focal plane dishes) to 0.3)

-6dB in beamwidth corresponds  to a -10dB edge illumination (max gain) since there is an additional -4dB spreading loss to the edge at these low f/D ratios.

the coax is running inside a graphite tube (all i have at hand from a broken arrow) center of patch and coming back from behind

 

[Admin 2578]

 

,,, anyway, you can do a simulation ... !!!???

[clanon 258]

[Admin 2578]

 

,,,yes, very interesting, you can also give dimensions ... !! ???

[clanon 258]

5.4  - 5.5 mm from patch to reflector

17 mm ring

11 - 12 mm from edge to feeding point

ALL this settings for DEEP DISHES ...f_D 0.25 to 0.3

The DISH HIGHLY INFLUENCE the FEEDER

 

Edited April 11, 2021 by clanon

[Admin 2578]

Dual polarized patch over a 0.6 lambda circular reflector. The feed includes a tuning disc for each polarization.