A compact zeroth‐order directional antenna. Issue 4 (April 2014)

• Record Type: Journal Article
• Authors: Dinesh, R.; Vinod, V. K. T.; Anila, P. V.; Jithin, P.; Deepak, C. M.; Mohanan, P.
• Is Part Of: Microwave and optical technology letters. Volume 56:Issue 4(2014:Apr.)
• Page Start: 929
• Page End: 932
• Publication Date: 2014-04
• Subjects: Microwaves -- Periodicals; Optics -- Periodicals; 621
• DOI: 10.1002/mop.28241
• Languages: English
• ISSNs: 0895-2477

Abstract

<abstract abstract-type="main"> <title>Abstract</title> <p>A novel via free, asymmetrical coplanar strip fed zeroth‐order directional antenna suitable for 2.4 GHz WLAN applications is presented. The zeroth‐order resonance is achieved by realizing a composite right/left‐handed transmission line‐based interdigital capacitor inserted into the shorted asymmetric coplanar strip. The structural asymmetry provides an improved directivity for the antenna. The prototype made on a low cost substrate of relative permittivity 3.7 and height 1.6 mm with an overall dimension 29 × 16.5 × 1.6 mm³ offers a 2:1 VSWR impedance bandwidth of 280 MHz (2.21–2.49 GHz) and exhibits directional radiation pattern with a peak gain of 3.7 dBi over the entire operating band<bold>.</bold> © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:929–932, 2014</p> </abstract>