Highly isolated circular polarized antenna
An antenna featuring a pair of radiating elements. Each pair of radiating element is fed from the same input. Each radiating element is a stacked antenna made of feeding patch and radiating patch featuring cross recessed corners. Moreover, the corners of a radiating patch and the corners of its feeding patch are cut in opposite directions. The use of recessed corner patches result in improved cross-polarization. Improved cross-polarization leads to better isolation between radiating elements of an array antenna and to an antenna featuring improved isolation from its surroundings.
1. At least one circular polarized antenna comprising:
a feeding patch having cross recessed corners, and
a radiating patch having cross recessed corners complementary with the recessed corners of the feeding patch.
2. The at least one circular polarized antenna of claim 1 , wherein said at least one circular polarized antenna comprising at least two radiating elements fed from the same input.
3. The circular polarized antenna of claim 2 , wherein said at least two radiating elements are polarization shifted.
4. The at least one circular polarized antenna of claim 1 , wherein said feeding patch and said radiating patch are sandwiching a dielectric material.
5. The at least one circular polarized antenna of claim 1 , wherein said at least one circular polarized antenna features low sensitivity to the shape of a Radome covering it.
6. The at least one circular polarized antenna of claim 1 , wherein said at least one circular polarized antenna is an array antenna.
7. A circular polarized stacked array antenna comprising:
feeding patches having cross recessed corners,
radiating patches having cross recessed corners, and
at least one sandwiched cross-recessed corner patch,
wherein the patches are arranged in such a way that every two following stacked patches are cut in the complementary corners.