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Comparative Study on Different Dual-Band HIS Structures

H. Wadie Badri, H. Zairi, A. Gharsallah

In this paper, we present a comparative study of two different dual-band high impedance surfaces (HIS) to be used as ground planes. These structures are designed to behave as a magnetic conductor surface for global positioning system (GPS) standard frequencies L1 (1575 MHz) and L2 (1227 MHz). Each of the two surfaces is characterized by performing parametric studies of its unit cell. The studies were carried out using CST Microwave Studio Simulation software. The results show that the two-layer cell gives the best bandwidth for high and low frequency bands.