Electronically beam-steerable full-duplex phased array antenna
AssigneeHuawei Technologies Co., Ltd.
InventorSenglee Foo
Life of this patent
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Abstract
An electronically beam-steerable full-duplex phased array antenna is described. The phased array antenna includes an array of a plurality of radiating elements. The array includes at least one column having a plurality of radiating elements, and the array is configured to generate a radiation field. The phased array antenna includes a metasurface over the array of radiating elements. The metasurface introduces a phase shift to the radiation field of the array, to cause a beam of the phased array antenna to be angularly offset from the radiation field of the array.
Claims17
A beam-steerable phased array antenna comprising:
- an array of a plurality of dual-polarized radiating elements, the array including at least one column having a plurality of dual-polarized radiating elements, the array being configured to generate a radiation field;
- and
- a metasurface over the array of radiating elements, the metasurface introducing a phase distribution over at least one wave polarization direction to cause a phase shift to the radiation field of the array, wherein the radiation field of the array has an array scan angle local to the array, the array scan angle being free of the phase shift by the metasurface, and wherein the phase shift by the metasurface causes a beam of the phased array antenna to have a beam angle that is angularly offset to be at a lower tilt than the array scan angle of the radiation field of the array.
A base station comprising:
- a phased array antenna for transmission and reception of wireless communications, the phased array antenna comprising:
- an array of a plurality of radiating elements, the array including at least one column having a plurality of radiating elements, the array being configured to generate a radiation field;
- and
- a metasurface over the array of radiating elements, the metasurface introducing a phase distribution over at least one wave polarization direction to cause a phase offset to the radiation field of the array, wherein the radiation field of the array has an array scan angle local to the array, the array scan angle being free of the phase shift by the metasurface, and wherein the phase shift by the metasurface causes a beam of the phased array antenna to be angularly offset to be lower a lower tilt than the radiation field of the array;
- a transmitter coupled to the phased array antenna for providing a transmit signal;
- a receiver coupled to the phased array antenna for receiving a receive signal;
- and
- a processing device to control progressive phases applied to the phased array antenna, the processing device being configured to set progressive phases sufficiently high to cause self-cancellation of mutual coupling in the array of radiating elements.
Dependencies are inferred from the claim text.