Multiport impedance testing of antennas for MIMO systems

In this paper, this technique is illustrated by the measurement of two different four-port PIFA arrays using a multiport test system. The correlations of the array elements are discussed from the measured mutual coupling in impedance matrix. The following section of this paper will introduce the antenna arrays to be measured, the measurement system and the calculations methodology. The measurement results will be presented and discussed in the third section, and a summary and conclusion follow at the end.