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In general, to use beamforming technology, an antenna composed of multiple elements is required. In addition, an RF chain composed of active elements consuming power is connected to each element.
That is, when the number of antennas of the array antenna increases, the number of RF chains also increases, which may cause problems such as interference between circuits, heat generation, increase in form factor size, and increase in power consumption.
When a conventional array antenna is used in an MPT system, the power transmission efficiency of the overall system may decrease due to an increase in power consumption caused by multiple RF chains. |
IEEE/ICACT20220074 Slide.06
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