Dipole antenna array elements for multi-port base station antenna
AssigneeCommunication Components Antenna Inc.
InventorsSadegh FARZANEH, Jacob VAN BEEK, Minya GAVRILOVIC, Nasrin HOJJAT
Life of this patent
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Abstract
A dipole antenna array element using crossed dipoles is provided. The arms of the crossed dipoles are spaced apart from a ground plane. The length of the arms of the crossed dipoles, as well as the height of the array element, is dependent on the lowest wavelength of signal for which the element is to be used with. To adjust the impedance of the antenna array element, a strip of conductive material is used to enclose an area about the arms of the dipoles. A patch component can also be used with the arms being between the patch component and the ground plane.
Claims21
A dipole antenna comprising:
- a pair of arms extending outwardly from a center and spaced apart from a ground plane, said pair of arms having a combined length ranging from 0.25λ to 0.5λ;
- wherein
- said dipole antenna has a height ranging from 0.15λ to 0.25λ as measured from said ground plane;
- λ being equal to a wavelength of a lowest frequency of a signal to be used with said dipole antenna.
An antenna array comprising:
- a plurality of antenna elements, at least one of said plurality of antenna elements being of a first kind of antenna element, said first kind of antenna element having a structure comprising:
- two pairs of first arms extending outwardly from a first center and spaced apart from a first ground plane, said pairs of first arms having a combined length ranging from 0.25λ1 to 0.28λ1,
- said first kind of antenna element having a height ranging from 0.15λ1 to 0.25λ1 as measured from said first ground plane;
- at least one first strip of conductive material enclosing an area around said pairs of first arms, said at least one first strip being spaced apart from and physically unconnected with said pairs of first arms, said at least one first strip being for modifying an overall impedance of said first kind of antenna element;
- a patch component for modifying an impedance of said first kind of antenna element, said patch component being a patch of conductive material located such that said pairs of first arms is between said patch component and said first ground plane;
- wherein
- λ1 is equal to a wavelength of a lowest frequency of a first signal to be used with said first kind antenna element;
- said antenna array is for use with signals having a frequency ranging from 698 MHz to 2800 MHz.
A dipole antenna element comprising:
- two pairs of arms extending outwardly from a center and spaced apart from a ground plane;
- at least one strip of conductive material enclosing an area around said pairs of arms, said at least one strip being spaced apart from and physically unconnected with said pairs of arms, said at least one strip being for modifying an overall impedance of said antenna element;
- and
- a patch component for modifying an impedance of said antenna element, said patch component being a patch of conductive material located such that said pairs of arms is between said patch component and said ground plane.
Dependencies are inferred from the claim text.