Design of a Dual-Polarization Dual-Wideband Planar Antenna
Abstract
Wireless communication is a fundamental requirement because of its low cost, high flexibility and convenience, continuing improvements in speed and connectivity, and accessibility in remote areas. One example is very small aperture terminal (VSAT) communication. A VSAT is a two-way satellite ground station operating at C-band and Ku-band frequencies, with linear and circular polarization in the C band and linear polarization in the Ku band. For the data transmitted by a satellite to be utilized by a user, the antenna on the user side must have dual-wideband and dual-polarization characteristics. In this study, a dual-polarization planar dual-wideband antenna with dimensions of 30 x 39 x 1.52 mm3 was designed using a dual-port approach. The introduction of a slot and perturbation on the patch side results in the dual-wideband characteristics of the antenna. The introduction of slots into the antenna ground results in circular polarization. The proposed antenna has resonant frequencies of 3.75 - 4.68 GHz and 5.6 - 9.3 GHz on port 1 and 3.13 - 5.72 GHz and 10.41 - 12.29 GHz on port 2, with circular polarization characteristics on port 1 and linear polarization characteristics on port 2. On port 1, the gains at frequencies of 4.2 GHz and 6.2 GHz are 3.4 dB and 4.5 dB, respectively, while on port 2, the gains at frequencies of 3.9 GHz, 6.13 GHz, and 11.8 GHz are 2.12 dB, 2.52 dB, and 6.13 dB, respectively.References
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