Microstrip antennas for cellular communication systems

The paper describes problems related to the use of microstrip antennas in cellular telecommunications systems. Because of the unique properties, microstrip technology is nowadays often used to manufacture antennas for base stations as well as for handset terminals. It also seems to be a very promising technology for multisystem antennas, for which there is an ever-growing demand. The paper also presents a short overview of currently available solutions and ones under development by the authors, along with some key problems related to their design.