Surface wave losses in printed antennas over magneto-dielectric materials

Microstrip antennas have been used in recent years in many microwave applications due to their advantages as for example low cost, ease of production and small size. High permittivity dielectric substrates lead to size reduction in printed antennas design, but the performances of such antennas as the bandwidth and the efficiency are considerably reduced [1]. New magneto-dielectric materials seem to overcome this limitation because of a larger bandwidth there offer compared to dielectric materials [2].