| 主权项 |
1. An antenna system connected to a radio in a Multiple-Input, Multiple-Output (MIMO) arrangement, the antenna system and the radio mounted on an access point module comprising at least a second antenna system connected to a second radio and configured to communicate with clients in a first sector of an area of coverage, the at least second antenna system and connected radio being configured to communicate with clients in a second sector of the area of coverage, the antenna system comprising:
a first plurality of antenna elements configured to communicate on a first frequency band and a second plurality of antenna elements configured to communicate on a second frequency band, the first plurality of antenna elements comprising a center antenna element to produce a center beam, a first side antenna element to produce a right beam covering a space substantially to the right of the center beam, and a second side antenna element to produce a left beam covering a space substantially to the left of the center beam; a plurality of MIMO-configured radio ports for communicating radio signals to and from the first plurality and the second plurality of antenna elements; a beam-forming network comprising a Butler matrix having at least one 90° hybrid, connected to the first side antenna element and the second side antenna element of the first plurality of antenna elements and to at least two radio ports, the beam-forming network configured to form the right beam and the left beam such that the right beam is squinted from the left beam; where the at least one 90° hybrid includes two antenna side hybrid ports and two radio side hybrid ports;
where:a first one of the two antenna side hybrid ports is connected to the first side antenna element;a second one of the two antenna side hybrid ports is connected to the second side antenna element;a first one of the two radio side hybrid ports is connected to a first one of the MIMO-configured radio ports; anda second one of the two radio side hybrid ports is connected to a second one of the MIMO-configured radio ports; a first diplexer having two antenna side diplexer ports and one radio side diplexer port, the radio side diplexer port connected to the first one of the MIMO-configured radio ports; and a second diplexer having two antenna side diplexer ports and one radio side diplexer port, the radio side diplexer port connected to the second one of the MIMO-configured radio ports; where:
the first one of the two radio side hybrid ports is connected to the first one of the MIMO-configured radio ports via a first antenna side diplexer port of the first diplexer;the second one of the two radio side hybrid ports is connected to the second one of the MIMO-configured radio ports via a first antenna side diplexer port of the second diplexer;a first one of the second plurality of antenna elements is connected to a second antenna side diplexer port of the first diplexer, the first diplexer configured to multiplex and demultiplex signals communicated at the first and the second frequency bands received from the first one of the two radio side hybrid ports and from the first one of the second plurality of antenna elements; anda second one of the second plurality of antenna elements is connected to a second antenna side diplexer port of the second diplexer, the second diplexer configured to multiplex and demultiplex signals communicated at the first and the second frequency bands received from the second one of the two radio side hybrid ports and from the second one of the second plurality of antenna elements. |
