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Abstract
The paper presents a new and simple printed microstriplinefed self-complementary antenna for the WLAN and WiMAX applications. This antenna is composed of an arrow-shaped self-complementary configuration (ASSC) and a simple 50Ω microstrip feedline. The proposed antenna has two resonant structures, one of which is a half-arrow-shaped radiating monopole with a microstrip feedline, and the other is a complementary counterpart open slot on the extended ground plane. The ASSC mainly excites two resonant modes at 2.6 GHz and 3.8 GHz, respectively, in order to achieve wideband operation. The measured results show that the impedance bandwidth for 10 dB return loss is 4.11 GHz (2.24–6.35 GHz), which corresponds with a fractional bandwidth of 95%, and it can simultaneously cover WLAN and WiMAX bands. The measured and simulated radiation patterns and gains exhibit reasonable characteristics. In addition, the proposed antenna has a simple and compact size of 30 × 30 × 1.6 mm3.