Abstract
A compact and low-profile patch antenna with a simple structure is presented for the wireless local-area network (WLAN) and the wireless access in the vehicular environment (WAVE) applications. The proposed antenna with an overall size of only 23mm×25mm is fed by a coplanar waveguide (CPW), and yields 10-dB impedance bandwidths of about 250MHz centered at 2.44GHz and of about 22% ranging from 5.13 to 6.38GHz suitable for the WLAN 2.4/5.2/5.8GHz and the WAVE 5.9GHz (IEEE 802.11p) applications. Also, good dipole-like patterns and high average antenna gain of ≥2.3dBi over the operating bands have been obtained. In this design, resonance can be effectively controlled by simply tuning the shaped slots on the patch. Mechanism of mode excitations and effect of the added slot's length on resonance for the proposed antenna are examined and discussed in detail. The experimental results have validated the proposed design as useful for modern mobile communication.
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