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In this article, a novel rectangular ring monopole with triple-band operation for wireless local area network (WLAN) and worldwide interoperability for microwave access (WiMAX) applications is presented.The antenna is composed of a rectangular ring, two different types of strips on the inner edges of the ring and a partial ground plane. With the two strips, the rectangular ring monopole antenna can realize triple impedance bandwidths (VSWR ≤ 2) of 320 MHz (2.29-2.61 GHz), 1170 MHz (3.19-4.36 GHz), and 1360 MHz (4.95-6.31 GHz), which make it easy to cover the required bandwidths for WLAN bands (2.4-2.483, 5.15-5.35, and 5.725-5.825 GHz) and WiMAX bands (2.4-2.6, 3.3-3.8, and 5.25-5.85 GHz) applications. Details of the proposed triple-band antenna design are presented and discussed. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:974-978, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25943 [ABSTRACT FROM AUTHOR]

A dual-antenna system that consists of a planar meander monopole antenna and a planar inverted-F antenna (PIFA) in the folder-type mobile phone is proposed. By using the planar monopole type radiating element constructed with meander strips, the monopole antenna provides a degree of miniaturization while retaining a wide impedance bandwidth of 740 MHz (440-1180 MHz) and 220 MHz (1710-1930 MHz) that covers DVB-H/GSM/DCS within 3:1 VSWR; while by exciting dual-resonant modes of 1/8 λ at 900 MHz and 1/4 λ at 1800 MHz, the PIFA with coupling feed shows dual impedance bandwidths of 142 MHz (858-1000 MHz) and 410 MHz (1790-2200 MHz) that covers GSM/PCS/3G(UMTS) within 3:1 VSWR. The approximately omnidirectional pattern, good gain, over the operating bands have also been obtained. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:306-310, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.25695 [ABSTRACT FROM AUTHOR]