An LNB is a downconverter, and this one is used for some Irish satellite TV services. The scale of everything matters when your wavelength is only 15 mm. The PCB is small and neatly laid out.

Lots of stuff, including modifying it for use with the QO-100 geosynchronous satellite (German link). That’s what [Sebastian Westerhold] and [Celin Matlinski] did with a commodity LNB ...

Abstract: A wideband dual-polarized planar phased array with filtering characteristic is presented. The array element, working as a filtenna, is implemented with a dual-polarized stacked patch coupled ...

The WGS system is a constellation of highly capable military communications satellites that leverage cost-effective methods and technological advances in the communications satellite industry.