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US 8,542,158 B2Granted
Multi-band MIMO antenna
AssigneeEthertronics, Inc.
InventorsSebastian Rowson, Jeffrey Shamblin, Laurent Desclos, Young Cha
Life of this patent
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Abstract
A multi-band antenna system for MIMO applications is adapted to provide high isolation between antennas across a wide range of frequencies. Multiple Isolated Magnetic Dipole (IMD) antennas are co-located and connected with a feed network that can include switches that adjust phase length for transmission lines connecting the antennas. Filtering is integrated into the feed network to improve rejection of unwanted frequencies. Filtering can also be implemented on the antenna structure. Either one or multi-port antennas can be used.
Claims5
A multiband MIMO antenna system, comprising:
- a first antenna element comprising a first feed port, a second feed port, and a third feed port;
- a second antenna element comprising a fourth feed port;
- a first transmission line, a second transmission line, and a third transmission line each extending between one of said feed ports of said first antenna element and said second antenna element;
- a first filter disposed between the first and second feed ports of the first antenna element;
- a second filter disposed between the second and third feed ports of the first antenna element;
- and
- a coupler for connecting said first through third transmission lines to a transceiver.
4 more elements
Dependencies are inferred from the claim text.