How to design a Spaceborne Antenna for HEO (Highly elliptical orbit) satellites? What types of Antenna are useful for this purpose?
You can see about this in presentation
https://www.youtube.com/watch?v=IScVVyjkDnY
with start from 5 min to 8.40 min (you can see a different antennas solutions for different tasks)
or in the same presentation in ppt formatPresentation Створення антенно- фідерних пристроїв для космічної техніки
As the main trend for communication use digital antenna arrays
https://slyusar.kiev.ua/THURAYA_TEL.pdf
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