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Near-field antenna for wireless power transmission with four coplanar antenna elements that each follows a respective meandering pattern
Near-field antenna for wireless power transmission with four coplanar antenna elements that each follows a respective meandering pattern
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机译:具有四个共面天线元件的无线电力传输的近场天线,每个天线元件遵循各自的曲折模式
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摘要
A near-field antenna is provided, which includes: a reflector and four distinct antenna elements, offset from the reflector, each of the four distinct antenna elements following respective meandering patterns. Two antenna elements of the four antenna elements form a first dipole antenna along a first axis, and another two antenna elements of the four antenna elements form a second dipole antenna along a second axis perpendicular to the first axis. The near-field antenna further includes: (i) a power amplifier configured to feed electromagnetic signals to one of the dipole antennas, (ii) an impedance-adjusting component configured to adjust an impedance of one of the dipole antennas, and (iii) switch circuitry coupled to the power amplifier, the impedance-adjusting component, and the dipole antennas. The switch circuitry is configured to switchably couple the first dipole antenna to the power amplifier and the second dipole antenna to the impedance-adjusting component, and vice versa.
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