DISTRIBUTED ANTENNA SYSTEM ROBUST TO HUMAN BODY LOADING EFFECTS

摘要

The invention relates to an antenna system comprising a ground-plane (1100) and at least two antenna elements (1101) connected to a common input/output port (1106) for said antenna system. Each of said antenna elements (1101) comprise one driven point (1102). The antenna system further comprises means (1103) for transmitting the signal from the antenna elements (1101) towards said common input/output port (1106), and a combining means (1105) to interconnect the signals to said common input/output port (1106). Further, the system comprises at least one phase shifting element (1104) placed between at least one of said driven points (1102) and said combining means (1105) and arranged to provide a phase shift that minimizes the sum of the reflection coefficients of said at least two antenna elements (1101) measured at said common input /output port (1106).