Phased array antennas having decoupling units
AssigneeCommScope Technologies LLC
InventorsKasun M S Thotahewa, Philip Raymond C. Gripo, Peter J. Liversidge
Life of this patent
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Abstract
A base station antenna includes a panel that has a ground plane, first and second arrays that have respective first and second sets of linearly arranged radiating elements mounted on the panel, and a decoupling unit positioned between a first radiating element of the first array and a first radiating element of the second array. The decoupling unit includes at least a first sidewall that faces the first radiating element of the first array, a second sidewall that faces the first radiating element of the second array and an internal cavity that is defined in the region between the sidewalls. The first and second sidewalls are electrically conductive and electrically connected to the ground plane.
Claims20
A base station antenna, comprising:
- a panel that includes a ground plane;
- at least a first array that includes a first plurality of linearly arranged radiating elements and a second array that includes a second plurality of linearly arranged radiating elements mounted on the panel;
- and
- a plurality of decoupling units positioned between the first array and the second array,
- wherein each decoupling unit includes at least a first sidewall that faces a respective one of the radiating elements of the first array, a second sidewall that faces a respective one of the radiating elements of the second array and an internal cavity that is defined in the region between the sidewalls, and
- wherein the first and second sidewalls of each of the decoupling units are each electrically conductive and are electrically connected to the ground plane.
The base station antenna of claim i, wherein the decoupling unit further includes a top plate that connects an upper edge of the first sidewall to an upper edge of the second sidewall.
A decoupling unit that is configured to reduce cross coupling between a first radiating element of a first linear array of a phased array antenna and a second radiating element of a second linear array of the phased array antenna, the decoupling unit comprising;
- a first sidewall;
- a second sidewall opposite the first sidewall;
- a top plate that connects an upper edge of the first sidewall to an upper edge of the second sidewall;
- an internal cavity defined by at least the first sidewall, the second sidewall and the top plate;
- wherein the top plate has a width in a first direction that extends between the first and second sidewalls of between 0.2 and 0.35 a wavelength of a first, frequency in tire frequency range of operation of the first radiating element where a coupling between the first and second linear arrays in the absence of the decoupling unit reaches a maximum value, the top plate has a length ‘dun is between 0.45 and 0.65 the wavelength of the first frequency, and the first and second sidewalls have a height that is between 0.1 and 0.35 the wavelength of the first frequency.
Dependencies are inferred from the claim text.