Dual band dual polarization antenna array
A wireless device having vertically and horizontally polarized antenna arrays can operate at multiple frequencies concurrently. A horizontally polarized antenna array allows for the efficient distribution of RF energy in dual bands using, for example, selectable antenna elements, reflectors and/or directors that create and influence a particular radiation pattern. A vertically polarized array can provide a high-gain dual band wireless environment using reflectors and directors as well. The polarized horizontal antenna arrays and polarized vertical antenna arrays can operate concurrently to provide dual band operation simultaneously.
1. A dual band antenna system, comprising:
a plurality of horizontally polarized antenna elements operating at a first frequency and a second frequency;
a plurality of vertically polarized antenna elements coupled to the horizontally polarized antenna elements array and configured to concurrently operating at the first frequency and the second frequency with the horizontally polarized antenna array; and
an antenna selector that concurrently selects a first subset of antenna elements of the plurality of horizontally polarized antenna elements to communicate the first frequency and second frequency and a second subset of antenna element of the plurality of vertically polarzied antenna elements to communicate the first frequency and second frequency.
2. The dual band antenna system of claim 1 , wherein the first frequency is higher than the second frequency, and the plurality of horizontally polarized antenna elements includes a first antenna element positioned outside of the radiation produced by a second antenna element in the plurality of horizontally polarized antenna element.
3. The dual band antenna system of claim 2 , wherein the first antenna element operates at about 2.4 GHz and the second antenna element operates at about 5.0 GHz.
4. The dual band antenna system of claim 2 , wherein the first antenna element and the second antenna element are on a single printed circuit board.
5. The dual band antenna system of claim 1 , wherein the plurality of horizontally polarized antenna elements includes a first antenna element that operates at the first frequency and a second antenna element that operates at the second frequency.
6. The dual band antenna system of claim 1 , wherein a circuit board hosting the plurality of vertically polarized antenna elements couples with a circuit board hosting the plurality of horizontally polarized antenna elements through a slit in the circuit board hosting the plurality of horizontally polarized antenna elements.
7. The dual band antenna system of claim 1 , wherein the antenna selector controls a plurality of switches to couple each of the plurality of horizontally polarized antenna elements and each of the plurality of vertically polarized antenna elements to a modulator/demodulator.
8. The dual band antenna system of claim 1 , further comprising a plurality of reflectors for reflecting a radiation pattern of the plurality of horizontally polarized antenna elements or the plurality of vertically polarized antenna elements.
9. The dual band antenna system of claim 8 , wherein the antenna selector couples a selected reflector to reflect the radiation pattern.
10. The dual band antenna system of claim 1 , further comprising a plurality of directors for directing a radiation pattern of the plurality of horizontally polarized antenna elements or the plurality of vertically polarized antenna elements.