Compact dual-band antenna for 2.4/5.2/5.8 GHz WLAN service for laptop computer applications

摘要

In this study, a compact dual-band antenna for wireless universal serial bus dongle applications is proposed. The proposed structure consists of a conventional folded monopole antenna (driven element) and a strip pattern that extends from the ground (GND) plane (shorten parasitic element). The proposed antenna exhibits triple-resonance (f(1), f(2), and f(3)). The first two resonance frequencies (f(1) and f(2)) are generated by adding the shorted parasitic element. The third resonance frequency (f(3)) is generated by the folded monopole antenna. The first resonance frequency (f(1)) covers 2.4-GHz wireless local area network (WLAN) service, whereas the second and third resonance frequencies (f(2) and f(3)) cover 5.2/5.8-GHz WLAN service. Thus, dual-band operation for 2.4/5.2/5.8-GHz WLAN service can be easily performed. The antenna occupies a small area of 7 x 20 mm(2). It can be easily connected to the edge of the system GND plane or the supporting metal frame of a laptop computer. Details of the proposed antenna are presented and studied. (c) 2015 Wiley Periodicals, Inc. Microwave Opt Technol Lett 57:2207-2213, 2015