A novel design of multiband printed anchor‐shaped slot antenna

In this article, two novel printed anchor-shaped slot antennas for multiband wireless applications are proposed. The first proposed anchor-shaped slot antenna (ASA1) can generate two wide bands centered at about 2.5-GHz and 5.5-GHz, covering the 2.4/5.2/5.8-GHz WLAN bands (2.4–2.484, 5.15–5.35, and 5.725–5.825 GHz) and 2.5/5.5-GHz WiMAX bands (2.50–2.69 and 5.25–5.85 GHz). The second proposed design is established on the basis of ASA1. By introducing a pair of F-shaped slits, an extra resonant mode will be excited at 3.5-GHz. Therefore, it can be converted to a triple-band anchor-shaped slot antenna (ASA2) supporting 2.4/5.2/5.8-GHz WLAN and 2.5/3.5/5.5-GHz WiMAX (2.50–2.69, 3.30–3.70, and 5.25–5.85 GHz) applications without changing other original design parameters of ASA1. From the aspect of system design, a platform using the proposed antennas would exhibit more flexibility and expansibility. Having overall dimensions of 35 × 30 mm2, the proposed antennas can be easily integrated into portable devices. Monopole-like radiation patterns almost remain unchanged in the E- and H-planes over the operating bands and sufficient gains are also obtained. Good agreement can be observed between the simulated and measured results. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:521–526, 2016