Surface‐mount WWAN monopole slot antenna for mobile handset

Abstract

Abstract A surface‐mount monopole slot antenna with a small volume of 13 × 28.5 × 2.2 mm 3 for penta‐band wireless wide area network operation in the mobile handset is presented.The antenna is to be surface‐mounted at a rectangular notch of size 13 × 28.5 mm 2 near the bottom edge of the system ground plane. When surface‐mounted, the antenna is closely integrated with surrounding system ground plane on the main circuit board of the handset. The antenna can provide two wide operating bands of 824–960 and 1710–2170 MHz to respectively cover the GSM850/900 and GSM1800/1900/UMTS operations. The surface‐mount antenna mainly comprises a monopole slot of width 4 mm and length 50 mm, which is bent to have a compact size and is fed by a microstrip feedline. Both the monopole slot and microstrip feedline are printed on two opposite surfaces of a dielectric substrate, which is bent into an inverted‐U shape for surface‐mounting on the circuit board of the handset. Details of the proposed antenna are described, and results of the antenna including its specific absorption rate values are presented and discussed. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26096