Abstract:

The probe arrays of the near-field measurement system is studied theoretically and experimentally. A dual-polarized linear array which consists of four dual-polarized printed dipoles is designed. First a dual-polarized printed dipole is designed as the unit of the array, which is composed of two vertical single polarized printed dipoles.Then a straight line array is composed of four dual polarized printed dipole antennas.The mutual couplings between array elements is analyzed. The isolation between the units is improved.Finally, the antenna array is measured actually. Measured results show that in a broader band, the isolations between the elements of the array are big while the mutual couplings between array elements are small, which indicates the validity of this method.

Key words: probes, dipole antennas, dual polarization, antenna arrays