Multipath open loop antenna with wideband resonances for WAN communications
View Patent ↗The disclosure concerns an antenna with open loops and multipath current distribution to achieve ultra wideband characteristics and antenna miniaturization, while simultaneously keeping high performance for a more reliable WAN communication, with higher data transfer, less dropping connections and improved sensitivity. To further reduce spatial requirements, the antenna may be incorporated on a flex substrate for bending with the contour of a device housing or the like.
1. A multi-path open loop antenna, comprising:
a substrate sheet having a length greater than a width thereof forming a rectangular shape, and further having a periphery comprising a first peripheral edge, a second peripheral edge opposite of the first peripheral edge, and a pair of terminal edges being disposed on either side of the substrate;
a first open-loop radiating conductor disposed adjacent to one of said terminal edges;
said first open-loop radiating conductor further comprising a first feed solder pad, a first conductor section and a second conductor section, each of said first and second conductor sections individually comprising at least one loop region; and
a second open-loop radiating conductor, the second open-loop radiating conductor being configured as a mirror image of the first open-loop radiating conductor; and
a current distribution concentrator disposed between said first and second open-loop radiating portions; wherein said current distribution concentrator includes the first ground conductor portion and a second ground conductor portion, the second ground conductor portion being coupled to the first ground conductor portion via a band pass filter extending therebetween.
2. The antenna of claim 1 , wherein the second ground conductor portion is configured as a mirror image of the first ground conductor portion.
3. The antenna of claim 2 , said antenna being configured as a 2×2 MIMO antenna configuration.
4. The antenna of claim 1 , wherein said substrate sheet comprises a flexible polyimide substrate sheet.
5. The antenna of claim 1 , wherein said first ground conductor portion and first open-loop radiating conductor are configured to provide multipath current distribution for ultra-wide band response.