Base station polarization-sensitive adaptive antenna for mobile radio

An attractive alternative to combat desired-signal fading and suppress co-channel interference in a mobile radio environment is to use a base station adaptive antenna with polarization-sensitive elements. This paper describes the design of a four-crossed-dipole adaptive array in which polarization discrimination is used to separate the desired signal from both directional and non-directional wave interference. In contrast to previous work, mutual coupling has been included in the evaluation of the array performance, using the method of moments. Further, computer simulation shows that the performance of the adaptive antenna is improved in the presence of a flat-backed corner reflector