Abstract

This paper presents a design of compact multiband L-shaped slot antenna using complementary split ring resonator (CSRR) for Wireless Local Area (WLAN) applications. The aim of this paper is to design a very small-profile antenna (less than 20×25mm2) that can operate in multi-band frequency ranges around 2.4GHz and 5.2GHz. By etching F-shaped slots on each radiator side of rectangular-patch antenna on circular-shaped ground plane, a multi-band antenna can be achieved and the operation frequencies can be tuned via the F-shape slot geometry. Furthermore, a concept of CSRR (two-dimensional artificial structure) is applied on the circular-shaped ground plane by forming complementary split ring resonators on the copper surface. With this structure, the values of permittivity (∊) and permeability (μ) can be negative at the designed frequencies and consequently the size of antenna could be significantly reduced to almost 60%. The antenna is designed using the time domain CST Microwave Studio (MWS) simulator.

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