Compact antenna array using virtual rotation of radiating vectors
AssigneeQuintel Technology Limited
InventorsPeter Chun Teck Song, David Edwin Barker
Life of this patent
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Abstract
In one example, a device includes an antenna array having at least a first cross dipole antenna element having a first dipole and a second dipole orthogonal to the first dipole and at least a second cross dipole antenna element having a third dipole and a fourth dipole orthogonal to the third dipole. An orientation of the at least a second cross dipole antenna is offset 45 degrees with respect to the at least a first cross dipole antenna element. The at least a first cross dipole antenna element and the at least a second cross dipole antenna element are for transmitting and/or receiving signals at plus 45 degrees and minus 45 degrees slant polarizations.
Claims23
A device comprising:
- an antenna array, comprising:
- at least one first cross dipole antenna element having a first dipole and a second dipole orthogonal to the first dipole, wherein a length of the first dipole is the same as a length of the second dipole;
- and
- at least one second cross dipole antenna element having a third dipole and a fourth dipole orthogonal to the third dipole, wherein a length of the third dipole is the same as a length of the fourth dipole, wherein an orientation of the at least one second cross dipole antenna is offset 45 degrees with respect to the at least one first cross dipole antenna element, wherein the at least one first cross dipole antenna element and the at least one second cross dipole antenna element are for transmitting or receiving signals at +45 degrees and −45 degrees slant polarizations.
A method for using an antenna array, comprising:
- receiving a first signal for transmission at a first 45 degree slant linear polarization;
- receiving a second signal for transmission at a second 45 degree slant linear polarization, wherein the second 45 degree slant linear polarization is orthogonal to the first 45 degree slant linear polarization;
- driving a first dipole of at least one first cross dipole antenna element of the antenna array with the first signal;
- driving a second dipole of the at least one first cross dipole antenna element with the second signal, wherein a length of the first dipole of at least one first cross dipole antenna element is the same as a length of the second dipole of the at least one first cross dipole antenna element;
- splitting the first signal into a first co-phased component signal and a second co-phased component signal;
- splitting the second component signal into a first anti-phased component signal and a second anti-phased component signal;
- driving at least one dipole of a first polarization state with the first co-phased component signal and the first anti-phased component signal;
- and
- driving at least one dipole of a second polarization state with the second co-phased component signal and the second anti-phased component signal, wherein the at least one dipole of the first polarization state and the at least one dipole of the second polarization state are components of at least one second cross-dipole antenna element of the antenna array, wherein a length of the at least one dipole of the first polarization state is the same as a length of the at least one dipole of the second polarization state.
Dependencies are inferred from the claim text.