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Dual-band dual-polarized antenna array

  • US 20040145526A1
  • Filed: 10/15/2003
  • Published: 07/29/2004
  • Est. Priority Date: 04/16/2001
  • Status: Active Grant
First Claim
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1. Dual-band dual-polarized antenna array operating at a lower frequency f1 and at a higher frequency f2, the ratio f2/f1 bein smaller than 1.5, characterized by the physical arrangement of the antenna elements, said arrangement comprising:

  • (a) a first row of antenna elements aligned along a first vertical axis, said elements being dual-polarized antenna elements operating at said higher frequency f2, the spacing between said elements being smaller than the size of the central wavelength at said higher frequency f2 (b) a second row of antenna elements aligned along a second vertical axis, said elements being dual-polarized antenna elements operating at said lower frequency f1, said elements being spaced the same distance as the elements in the adjacent row operating at frequency f2, said second vertical axis being placed substantially parallel to said first vertical axis at a distance between 0.1 and 1.2 times the longer operating wavelength, and wherein the positions of the elements operating at f2 are interleaved in the vertical direction with respect to the vertical positions of the elements operating at f1 in such a way that the distance among elements is maximized to minimize the inter-band and intra-band electromagnetic coupling among radiating elements.

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