Compact ultra-wideband antenna
The disclosure provides a compact ultra-wideband (UWB) antenna comprising a plurality of sub-radiator segments, the plurality of sub-radiator segments being a flare section, an inductive corner section, and a rib section. The inductive corner section is configured to mount to a ground surface and connects the flare section and the inductive corner section. The UWB operates over a wide frequency range of 2-18 GHz with good impedance match, high forward gain, stable phase center, and consistent radiation performance. The UWB antenna further comprises a feed point. The feed point is configured to receive a coaxial connector. The plurality of sub-radiator segments are each optimized to propagate electromagnetic currents during specific frequency ranges within the wide frequency range of 2-18 GHz. Further, the UWB antenna can be a single monolithic material, such as a metallic aluminum.
1. An ultra-wide band antenna comprising:
A plurality of sub-radiator segments, the plurality of sub-radiator segments collectively being configured to direct electromagnetic energy primarily in a forward end-fire direction, the plurality of sub-radiator segments defining:
a flare section, wherein the flare section comprises a curved parabolic surface having first and second ends, the first end connecting to an inductive corner section and the section end spaced from the inductive corner section and connecting to a rib section;
an inductive corner section, wherein the inductive corner section is configured to mount to a ground surface;
the rib section, the rib section connecting the inductive corner section and Flare section, the rib section being configured to provide a path for radiofrequency (RF) current, the rib section further being configured to attenuate undesirable electromagnetic fields with high frequency RF current.
2. The ultra-wide band antenna of claim 1 , the path comprising a ground portion of the ground surface, wherein the ground portion is configured to receive RF current.
3. The ultra-wide band antenna of claim 1 , further comprising a feed point.
4. The ultra-wide band antenna of claim 3 , wherein the feed point is configured to receive a coaxial connector.
5. The ultra-wideband antenna of claim 1 , wherein the plurality of sub-radiator segments collectively have three frequency ranges within a wide frequency range of the ultra-wideband antenna.
6. The ultra-wideband antenna of claim 5 , wherein one of the three frequency ranges is a high frequency range, the high frequency range being an upper portion of a wide frequency range.
7. The ultra-wideband antenna of claim 5 , wherein one of the three frequency ranges is a low frequency range, the low frequency range comprising a lower portion of the wide frequency range.
8. The ultra-wideband antenna of claim 5 , wherein one of the three frequency ranges is a mid-frequency range, the mid-frequency range comprising a mid-portion of the wide frequency range.
9. The ultra-wideband antenna of claim 5 , the wide frequency range being 2 GHz to 18 GHz.
10. The ultra-wideband antenna of claim 5 configured to operate over the wide frequency range with good impedance match.
11. The ultra-wideband antenna of claim 5 , the UWB antenna configured to operate over the wide frequency range with high forward gain.
12. The ultra-wideband antenna of claim 5 , the UWB antenna configured to operate over the wide frequency range with good impedance match.
13. The ultra-wideband antenna of claim 5 , the UWB antenna configured to operate over the wide frequency range with a partially stable phase center.
14. The ultra-wideband antenna of claim 5 , the UWB antenna configured to operate over the wide frequency range with a consistent radiation performance.
15. The ultra-wideband antenna of claim 1 , wherein the UWB antenna is of a monolithic material.
16. The ultra-wideband antenna of claim 15 , wherein the monolithic material is metallic.
17. The ultra-wideband antenna of claim 15 , wherein the monolithic material is aluminum.
18. The ultra-wideband antenna of claim 1 , where the antenna has no dielectric losses and low conductive losses.
19. The ultra-wideband antenna of claim 1 , where the antenna operation is insensitive to extreme temperature variations.
20. The ultra-wideband antenna of claim 1 , where the antenna is 0.002 lambda 3 at low frequency.