Near-field wireless-power-transmission system that includes first and second dipole antenna elements that are switchably coupled to a power amplifier and an impedance-adjusting component

A method of wirelessly charging a receiver device, the method comprising:

• providing a near-field antenna that comprises:
• a first dipole antenna;
• a second dipole antenna;
• providing a near-field wireless-power-transmission system that includes the near-field antenna and:
• switch circuitry coupled to at least the first dipole antenna and the second dipole antenna;
• a power amplifier coupled to the switch circuitry;
• and
• an impedance-adjusting component coupled to the switch circuitry;
• instructing the switch circuitry to couple:
• (i) the first dipole antenna to the power amplifier, and (ii) the second dipole antenna to the impedance-adjusting component;
• instructing the power amplifier to feed electromagnetic signals to the first dipole antenna via the switch circuitry, wherein:
• the electromagnetic signals, when fed to the first dipole antenna, cause the first dipole antenna to radiate electromagnetic signals to be received by a wireless-power-receiving device located within a threshold distance from the near-field antenna, and
• an impedance of the second dipole antenna is adjusted by the impedance-adjusting component so that the impedance of the second dipole antenna differs from an impedance of the first dipole antenna.

A method of manufacturing a near-field wireless-power-transmission system, the method of manufacturing including:

• providing a first dipole antenna that is placed along a first axis;
• providing a second dipole antenna placed along a second axis perpendicular to the first axis;
• providing a power amplifier configured to feed electromagnetic signals to at least one of the first and second dipole antennas;
• providing an impedance-adjusting component configured to adjust an impedance of at least one of the first and second dipole antennas;
• providing circuitry for coupling the at least the first dipole antenna and the second dipole antenna;
• and
• coupling, the reflector, the switch circuitry, the power amplifier, the impedance-adjusting component, and the first and second dipole antennas together, the switch circuitry being configured to:
• (i) switchably couple the first dipole antenna to the power amplifier and the second dipole antenna to the impedance-adjusting component, or
• (ii) switchably couple the second dipole antenna to the power amplifier and the first dipole antenna to the impedance-adjusting component.