Compact multiband antenna with CRLH-TL ZOR for wireless USB dongle applications.

A compact multiband antenna with composite right- and left-handed transmission line (CRLH-TL) zeroth-order resonator for wireless universal serial bus dongle applications is proposed in this article. The proposed antenna occupying a small volume of 12 × 28 × 5.8 mm3 comprises a folded monopole which can generate two resonant modes to cover the GSM850/900 (820-960 MHz) and the LTE2500 operation (2500-2690 MHz) and a CRLH-TL ZOR structure which is capacitively excited by the folded monopole to generate zeroth-order resonant mode to cover LTE700 (746-787 MHz). The proposed antenna offers nearly omnidirectional radiation patterns, the measured peak gain are obtained from 0.8 to 3.4 dBi, and measured antenna efficiency varies from about 40-56% in the whole operation band. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1133-1138, 2014 [ABSTRACT FROM AUTHOR]