Scalable radio frequency antenna array structures

1. A radio frequency (RF) antenna, comprising:

a plurality of high-band (HB) radiation elements, wherein each HB radiation element is configured to resonate within a first frequency band to transmit and receive RF signals associated with the first frequency band, wherein a distance between each of the HB radiation element and any remaining one of the HB radiation elements is at least a half of a wavelength associated with the first frequency band, wherein the plurality of HB radiation elements are coupled to at least four HB transceivers; and

a low-band (LB) radiation element configured to resonate within a second frequency band to transmit and receive RF signals associated with the second frequency band, wherein the LB radiation element is surrounded by the plurality of HB radiation elements, wherein the LB radiation element is coupled to two LB transceivers, the at least four HB transceivers and the two LB transceivers being included in an RF frontend integrated circuit (IC), the RF frontend IC further including a local oscillator (LO) generation and a distribution logic representing at least a portion of a frequency synthesizer.

2. The RF antenna of claim 1 , wherein the first frequency band is ranging from 59 Gigahertz (GHz) to 71 GHz, and wherein the second frequency band is ranging from 24 GHz to 43 GHz.

3. The RF antenna of claim 1 , wherein the distance between each of the HB radiation element and any remaining one of the HB radiation elements is approximately 2.3 millimeters (mm).

4. The RF antenna of claim 1 , wherein the distance between any two nearest HB radiation elements is ranging at least from 2.07 mm to 2.50 mm.

5. The RF antenna of claim 1 , wherein the plurality of HB radiation elements comprise at least four radiation elements symmetrically surrounding the LB radiation element.

6. The RF antenna of claim 1 , wherein each of the HB radiation elements is in a substantially rectangular or square shape.

7. The RF antenna of claim 1 , wherein the LB radiation element is in a substantially rectangular or square shape.

8. The RF antenna of claim 1 , wherein the RF antenna is a first antenna unit of a plurality of antenna units forming an antenna array, each of the antenna units having a substantially identical structure.

9. The RF antenna of claim 8 , wherein the antenna array includes a second antenna unit adjacent to the first antenna unit, wherein a distance between the LB radiation element of the first antenna unit and a second LB radiation element of the second antenna unit is at least a half of a second wavelength associated with the second frequency band.

10. The RF antenna of claim 9 , wherein the distance between the LB radiation element of the first antenna unit and the second LB radiation element of the second antenna unit is approximately 4.5 mm.

11. The RF antenna of claim 9 , wherein the distance between the LB radiation element of the first antenna unit and a nearest second LB radiation element of the second antenna unit is ranging from 4.05 mm to 4.95 mm.

12. A radio frequency (RF) antenna array, comprising:

a plurality of antenna units, wherein each of the antenna units comprises:

a plurality of high-band (HB) radiation elements, wherein each HB radiation element is configured to resonate within a first frequency band to transmit and receive RF signals associated with the first frequency band, wherein a distance between each of the HB radiation element and any remaining one of the HB radiation elements is at least a half of a wavelength associated with the first frequency band, wherein the plurality of HB radiation elements are coupled to at least four HB transceivers, and

a low-band (LB) radiation element configured to resonate within a second frequency band to transmit and receive RF signals associated with the second frequency band, wherein the LB radiation element is surrounded by the plurality of HB radiation elements, wherein the LB radiation element is coupled to two LB transceivers, the at least four HB transceivers and the two LB transceivers being included in an RF frontend integrated circuit (IC), the RF frontend IC further including a local oscillator (LO) generation and a distribution logic representing at least a portion of a frequency synthesizer.

13. The RF antenna array of claim 12 , wherein the first frequency band is ranging from 59 Gigahertz (GHz) to 71 GHz, and wherein the second frequency band is ranging from 24 GHz to 43 GHz.

14. The RF antenna array of claim 12 , wherein the distance between each of the HB radiation element and any remaining one of the HB radiation elements is approximately 2.3 millimeters (mm).

15. The RF antenna array of claim 12 , wherein the distance between any two nearest HB radiation elements is ranging at least from 2.07 mm to 2.50 mm.

16. The RF antenna array of claim 12 , wherein the plurality of HB radiation elements comprise at least four radiation elements symmetrically surrounding the LB radiation element.

17. The RF antenna array of claim 12 , wherein each of the HB radiation elements is in a substantially rectangular or square shape, and wherein the LB radiation element is in a substantially rectangular or square shape.

18. The RF antenna array of claim 12 , wherein a distance between an LB radiation element of any antenna unit and an LB radiation element of another antenna unit is at least a half of a second wavelength associated with the second frequency band.

19. The RF antenna array of claim 18 , wherein a distance between an LB radiation element of any antenna unit and an LB radiation element of another antenna unit is approximately 4.5 mm.

20. The RF antenna array of claim 18 , wherein a distance between any two nearest LB radiation elements is ranging from 4.05 mm to 4.95 mm.