Increasing the distance of wireless power transfer largely depends on the type of wireless power transmission technology being used, as different technologies have different capabilities and limitations when it comes to transferring power over distance. Here are some tips to help improve the distance of wireless power transmission:
Utilize energy efficient transmission techniques like resonant inductive coupling or microwave radiation (RF) to increase the transmission range.
Use low-frequency sources to increase the radiation resistance of the transmission system, which can effectively increase transmission distance.
Increase the transmitting and receiver antennas' gain, as well as the power of the transmitter, in order to increase the coverage area of the wireless power transmission.
Increase the transmission line impedance in order to raise the radiation efficiency of the transmission system and to enable the transfer of power over a greater distance.
Use a high-efficiency direct-conversion rectifier to ensure that the energy transmitted via the power receiver is efficiently converted into usable energy.
Utilize an energy harvesting system to capture the energy transmitted from the remote source.
Employ multiple transmitter and receiver systems connected using a master/slave protocol or a compensator algorithm in order to effectively increase the transmission range.
Utilize repeaters in order to amplify the wireless power transmission and increase the distance it can be transmitted over.
In addition to the above tips, it's also important to keep in mind that environmental conditions, such as the presence of obstacles or walls, can have a detrimental effect on the radio waves used for wireless power transmission and thus decrease the possible transmission range.
