Dual band dual polarization antenna array
View Patent ↗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 horizontally polarized antenna array that concurrently operates at a first frequency and a second frequency; and
a vertically polarized antenna array coupled to the horizontally polarized antenna array and that concurrently operates at the first frequency and the second frequency with the horizontally polarized antenna array; and
a radio modulator/demodulator that communicates a radio frequency signal with the horizontally polarized antenna array and vertically polarized antenna array.
2. The dual band antenna system of claim 1 , wherein the first frequency is higher than the second frequency, and the horizontally polarized antenna array includes a first antenna positioned outside of the radiation produced by a second antenna in the horizontally polarized antenna array.
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 horizontally polarized antenna array 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 vertically polarized array couples with a circuit board hosting the horizontally polarized array through a slit in the circuit board hosting the horizontally polarized array.
7. The dual band antenna system of claim 1 , wherein the vertically polarized array includes a first vertical antenna element array having a first antenna element that operates at the first frequency and a second vertical antenna element array having a second antenna element that operates at the second frequency.
8. The dual band antenna system of claim 7 , wherein the first vertical antenna element array and second vertical antenna element array are equally spaced around the horizontal antenna array.
9. The dual band antenna system of claim 1 , wherein the first vertical antenna element array and second vertical antenna element array are alternatively positioned around the horizontal antenna array.
10. The dual band antenna system of claim 1 , further comprising an antenna that selectively couples antenna elements within the horizontally polarized array and vertically polarized array.
11. The dual band antenna system of claim 1 , further comprising a reflector that reflects a radiation pattern of the horizontally polarized antenna array or vertically polarized antenna array.