Abstract
Abstract. Dual linear polarization microstrip antenna configurations are very suitable for high-performance satellites, wireless communication and radar applications. This paper presents a new method to improve the co-cross polarization discrimination (XPD) for dual linear polarized microstrip antennas at 10 GHz. For this, three various configurations of a dual linear polarization antenna utilizing metamaterial unit cells are shown. In the first layout, the microstrip patch antenna is loaded with two pairs of spiral ring resonators, in the second model, a split ring resonator is placed between two microstrip feed lines, and in the third design, a complementary split ring resonators are etched in the ground plane. This work has two primary goals: the first is related to the addition of metamaterial unit cells to the antenna structure which permits compensation for an asymmetric current distribution flow on the microstrip antenna and thus yields a symmetrical current distribution on it. This compensation leads to an important enhancement in the XPD in comparison to a conventional dual linear polarized microstrip patch antenna. The simulation reveals an improvement of 7.9, 8.8, and 4 dB in the E and H planes for the three designs, respectively, in the XPD as compared to the conventional dual linear polarized patch antenna. The second objective of this paper is to present the characteristics and performances of the designs of the spiral ring resonator (S-RR), split ring resonator (SRR), and complementary split ring resonator (CSRR) metamaterial unit cells. The simulations are evaluated using the commercial full-wave simulator, Ansoft High-Frequency Structure Simulator (HFSS).
Highlights
Dual linear polarization antennas have seen noteworthy progress in the last few years for several applications such as weather radar and wireless communication systems
The second objective of this paper is to present the characteristics and performances of the designs of the spiral ring resonator (S-RR), split ring resonator (SRR), and complementary split ring resonator (CSRR) metamaterial unit cells
The first is related to the mutual coupling between two input ports and the second is related to the cross polarization patterns
Summary
Dual linear polarization antennas have seen noteworthy progress in the last few years for several applications such as weather radar and wireless communication systems. The key merit of a dual linear polarization antenna is that provides two independent communication channels, in the ideal case and increasing channel capacity of the communication systems at the same baseband. The development of dual linear polarization antennas has witnessed many studies and designs in space polarimetric weather radar applications. The first is related to the mutual coupling between two input ports and the second is related to the cross polarization patterns. These drawbacks have provided a fertile ground for the research area. Many studies suggested and implemented various feeding mechanisms and approach to overcome these two problems and improve the performance of antenna system for their widespread applications (Yang et al, 2013; Liang et al, 2005)
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