Dual polarity antenna
AssigneeHuawei Technologies Co., Ltd.
InventorsIgnacio Gonzalez, Grzegorz Wolosinski, Bruno Biscontini
Life of this patent
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Abstract
In some examples, a dual polarity antenna includes a dual polarity radiator. The dual polarity radiator includes a first radiator having a first polarity and a second radiator having a second polarity orthogonal to the first polarity. The dual polarity antenna further includes an ancillary radiator. The dual polarity antenna further includes a feeding network for feeding a radio-frequency (RF) signal to both the first radiator and the ancillary radiator, driving the first radiator to radiate a wave having a first polarisation, causing radiation of a spurious wave having a polarisation orthogonal to the first polarisation, and driving the ancillary radiator to radiate a wave that cancels the spurious wave at least partly.
Claims20
A dual polarity antenna, comprising:
- a dual polarity radiator, comprising a first radiator having a first polarity and a second radiator having a second polarity orthogonal to the first polarity;
- an ancillary radiator;
- and
- a feeding network for feeding a radio-frequency (RF) signal to both the first radiator and the ancillary radiator, driving the first radiator to radiate a wave having a first polarization, causing radiation of a spurious wave having a polarization orthogonal to the first polarization, and driving the ancillary radiator to radiate a wave that cancels the spurious wave at least partly, wherein the feeding network comprises one or more delay elements that delay the RF signal, wherein a phase difference of the RF signal and the delayed RF signal is 180 degrees, wherein:
- the delayed RF signal is input to the ancillary radiator that is outside the dual polarity radiator, and the RF signal is input to the first radiator that is within the dual polarity radiator;
- or
- the RF signal is input to the ancillary radiator that is outside the dual polarity radiator, and the delayed RF signal is input to the first radiator that is within the dual polarity radiator.
An antenna array comprising a plurality of dual polarity antennas, wherein each dual polarity antenna of the plurality of dual polarity antennas comprises:
- a dual polarity radiator, comprising a first radiator having a first polarity and a second radiator having a second polarity orthogonal to the first polarity;
- an ancillary radiator;
- and
- a feeding network for feeding a radio-frequency (RF) signal to both the first radiator and the ancillary radiator, driving the first radiator to radiate a wave having a first polarization, causing radiation of a spurious wave having a polarization orthogonal to the first polarization, and driving the ancillary radiator to radiate a wave that cancels the spurious wave at least partly, wherein the feeding network comprises one or more delay elements that delay the RF signal, wherein a phase difference of the RF signal and the delayed RF signal is 180 degrees, wherein:
- the delayed RF signal is input to the ancillary radiator that is outside the dual polarity radiator, and the RF signal is input to the first radiator that is within the dual polarity radiator;
- or
- the RF signal is input to the ancillary radiator that is outside the dual polarity radiator, and the delayed RF signal is input to the first radiator that is within the dual polarity radiator.
A method of transmitting a radio-frequency (RF) signal, the method comprising:
- feeding the RF signal to a first radiator having a first polarity and to a first ancillary radiator, wherein the RF signal is delayed, wherein a phase difference of the RF signal and the delayed RF signal is 180 degrees, wherein:
- the delayed RF signal is input to the first ancillary radiator that is outside a dual polarity radiator, and the RF signal is input to the first radiator that is within the dual polarity radiator;
- or
- the RF signal is input to the first ancillary radiator that is outside the dual polarity radiator, and the delayed RF signal is input to the first radiator that is within the dual polarity radiator;
- driving the first radiator to radiate a wave having a first polarization;
- causing radiation of a spurious wave having a polarization orthogonal to the first polarization;
- and
- driving the first ancillary radiator to radiate a wave that cancels the spurious wave at least partly.
Dependencies are inferred from the claim text.