Design of dual-polarization dual-band high-gain microstrip patch antenna based on high-order modes

This paper presents a dual-polarization, dual-band, high gain, high radiation efficiency, and good isolation microstrip patch antenna using high-order modes TM10, TM50, and TM12. The antenna consists of a cross-shaped patch loaded with four slots on a single-layer dielectric substrate and 24 shorting pins connected to the ground. The simulated result shows that the antenna(the size is $1.65 \times 1.65 \times 0.023\lambda _0^3$) gain is greater than 12.12dB using TM10 and TM50, the maximum gain is 12.17dB at 3.4-3.46GHz, and the radiation efficiency is higher than 97.5%. Moreover, TM12 achieves the antenna gain greater than 11.21dB at 4.11-4.14GHz, the maximum gain is 11.66dB, and the radiation efficiency is higher than 91.1%.