QUAD-POLARIZED SECTOR AND DIMENSIONAL ANTENNA FOR HIGH THROUGHPUT
Systems, apparatuses, and methods are described for communicating with a quad-polarized antenna array using multiple-input, multiple output (MIMO) techniques. One apparatus for wireless communications includes an antenna array for MIMO wireless communication. The antenna array may include a first directional antenna having an orthogonal polarization, wherein the first directional antenna is pointed in a first direction. The antenna array may also include a second directional antenna having an orthogonal polarization, wherein the second directional antenna is pointed in a second direction different than the first direction. The quad-polarized antenna arrays described herein may be deployed in outdoor environments and achieve high throughput.
1 . An apparatus for wireless communications, comprising:
an antenna array for multiple-input, multiple-output (MIMO) wireless communication, comprising:
a first directional antenna having an orthogonal polarization, wherein the first directional antenna is pointed in a first direction;
a second directional antenna having an orthogonal polarization, wherein the second directional antenna is pointed in a second direction different from the first direction; and
a third directional antenna having an orthogonal polarization pointed in a third direction, wherein the third direction is different from the first direction and the second direction;
wherein the first and second directions are approximately 45 degrees apart.
2 . The apparatus of claim 1 , wherein the first directional antenna and the second directional antenna are spatially separated in order to reduce correlation.
3 . The apparatus of claim 1 , wherein the first and second directional antennas transmit and receive the wireless communications over four spatial streams.
4 . The apparatus of claim 1 , wherein the first and second directions are approximately antiparallel.
5 . (canceled)
6 . The apparatus of claim 1 , wherein the antenna array comprises an access point, wherein the first and second directional antennas transmit and receive MIMO wireless communications to and from a station comprising a single directional antenna with quad polarities.
7 . The apparatus of claim 1 , wherein the antenna array comprises one of an access point and a station.
8 . The apparatus of claim 1 , wherein a boresight of the antenna array is rotated approximately ninety degrees with respect to a receiving station.
9 . The apparatus of claim 1 , wherein the first directional antenna and the second directional antenna each comprise two dipole antennas.
10 . An apparatus for multiple-input multiple-output (MIMO) communications, comprising:
an antenna array comprising four dipole antennas having slant vertical polarization configured orthogonally.
11 . The apparatus of claim 10 , wherein each of the four dipole antennas has a gain of at least 5 dBi.
12 . The apparatus of claim 11 , wherein the gain of the four dipole antennas sustains three or four spatial streams.
13 . The apparatus of claim 10 , wherein the antenna array is a first antenna array, wherein the first antenna array communicates with a second antenna array comprising four dipole antennas having slant vertical polarization configured orthogonally.
14 . The apparatus of claim 13 , wherein the first antenna array is within approximately 80 meters of the second antenna array and in line-of-sight.
15 . The apparatus of claim 13 , wherein a boresight of the first antenna array is rotated at least ninety degrees with respect to the second antenna array.
16 . A multiple-input multiple-output (MIMO) wireless communication system, comprising:
an access point, comprising:
a first directional antenna having an orthogonal polarization, wherein the first directional antenna is pointed in a first direction;
a second directional antenna having an orthogonal polarization, wherein the second directional antenna is pointed in a second direction different from the first direction;
a third directional antenna having an orthogonal polarization, wherein the third directional antenna is pointed in a third direction different from the first and second direction; and
a station configured to communication with the access point;
wherein the first and second directions are approximately 45 degrees apart.
17 . The system of claim 16 , wherein the station further comprises:
a fourth directional antenna having an orthogonal polarization, wherein the fourth directional antenna is pointed in a fourth direction different from the first, second, and third direction.
18 . The system of claim 16 , wherein the station further comprises a single directional antenna with quad polarities.
19 . The system of claim 16 , wherein the first and second directions are approximately antiparallel.
20 . (canceled)
21 . The system of claim 16 , wherein the access point and the station communicate using a wireless local area network (WLAN) or a cellular network.
22 . The system of claim 16 , wherein the access point is configured to use three or four spatial streams for transmitting a signal to the station.
23 - 27 . (canceled)