DUAL-POLARIZED DIPOLE ANTENNAS HAVING SLANTED FEED PATHS THAT SUPPRESS COMMON MODE (MONOPOLE) RADIATION

    公开(公告)号:US20220181795A1

    公开(公告)日:2022-06-09

    申请号:US17437347

    申请日:2020-03-17

    Abstract: An antenna includes a box dipole radiating element, which is supported in front of a reflector. The box dipole radiating element has first through fourth feed ports, which extend adjacent first through fourth corners thereof. First through fourth pairs of slanted feed paths are also provided, which are coupled to the first through fourth feed ports. These first through fourth pairs of slanted feed paths extend rearwardly toward the reflector at first through fourth acute angles relative to respective first through fourth sides of the box dipole radiating element, so that: (i) the first and third pairs of slanted feed paths appear to criss-cross each other when a space between the box dipole radiating element and the reflector is viewed in a direction normal to the first side and parallel to the reflector; and (ii) the second and fourth pairs of slanted feed paths appear to criss-cross each other when the space is viewed in a direction normal to the second side and parallel to the reflector.

    SLANT CROSS-POLARIZED ANTENNA ARRAYS COMPOSED OF NON-SLANT POLARIZED RADIATING ELEMENTS

    公开(公告)号:US20220416406A1

    公开(公告)日:2022-12-29

    申请号:US17778205

    申请日:2020-11-30

    Abstract: Base station antennas include first and second radio frequency (“RF”) ports and a first antenna array that includes both first and second radiating elements. Each of the first radiating elements includes a first radiator that is connected to the first RF port that is configured to radiate at a first polarization and a second radiator that is connected to the second RF port that is configured to radiate at the first polarization. Each of the second radiating elements includes a first radiator that is connected to the first RF port that is configured to radiate at a second polarization that is different from the first polarization and a second radiator that is connected to the second RF port that is configured to radiate at the second polarization.

    DUAL-POLARIZED RADIATING ELEMENTS FOR BASE STATION ANTENNAS HAVING BUILT-IN STALK FILTERS THAT BLOCK COMMON MODE RADIATION PARASITICS

    公开(公告)号:US20220173507A1

    公开(公告)日:2022-06-02

    申请号:US17437362

    申请日:2020-03-17

    Abstract: An antenna includes a radiator and a feed stalk electrically coupled by first and second feed paths to the radiator. The feed stalk includes a common-mode rejection filter, which has first and second ports electrically connected to the first and second feed paths, a first inductor electrically coupled to the first port and a second inductor electrically coupled to the second port. The common-mode rejection filter is configured so that a first impedance electrically coupled to the first port is equivalent to Z1, and a second impedance electrically coupled to the second port is equivalent to Z2, where: Z1=R1+jωL+jωM(I2/I1); Z2=R2+jωL2+jωM(I1/I2); M≈L1≈L2; R1 and R2 are the resistances of the first and second inductors; L1 and L2 are the inductances of the first and second inductors; M is a mutual inductance between the first and second inductors; I1 and I2 are the first and second currents into the first and second ports; and ω is the angular frequency of the first and second currents.

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