Dual‐band monopolar microstrip antenna using a quasi‐circularly arranged mushroom resonator on meshed ground structure

This article presents a new dual‐band monopolar microstrip antenna with a meshed ground structure to improve the radiation performances. The quasi‐circularly arranged seven mushroom structures are utilized for dual‐band operation, which supports the resonances of the infinite wavelength and the TM modes. To improve the radiation performance, the meshed ground is employed and investigated by lowering the Q‐factor of the resonator. The proposed antenna demonstrates that dual‐band monopolar radiations at 3.298 and 5.709 GHz are in good agreement with the simulation results.