Wideband folded shorted patch antenna with low profile

The design and measurement of a low-profile folded patch antenna with a short-circuited element are presented. By introducing dual-resonance, a significantly improved bandwidth of almost 30% for S ₁₁<-10 dB, which ranges from 1.48 to 1.99 GHz, is achieved, while the total profile of the proposed antenna is kept at a very low level of 0.046 lambda₀ only. The impedance matching, radiation patterns and gain curve are measured and illustrated. This antenna is easy to fabricate and its performance is less susceptible to manufacturing errors. Owing to its wideband and low-profile characteristics, it is highly suitable for applications in mobile communication systems, such as PCS, DECT and PHS