SEARCH

SEARCH BY CITATION

Keywords:

  • printed antennas;
  • mobile-unit antennas;
  • WWAN antennas;
  • couple-fed technique;
  • conductive matching wire

Abstract

A compact and printed multiband antenna incorporating a conductive wire for wireless wide area network (WWAN) operation is presented. The antenna was formed on a low-cost, single-layered dielectric substrate of thickness 1 mm with the dimensions 10 × 55 mm2. The antenna is a couple-fed short-circuited monopole in the shape of T, which consists of two resonant paths for two wide operating bands. Unlike the conventional WWAN antennas utilizing a large system ground plane as the antenna ground to excite the antenna, the proposed antenna has a very small ground portion with comparable size to the radiating monopole and yet can also cover the GSM850/900 and GSM1800/1900/UMTS bands by incorporating a simply wire. The design is especially suited to some e-book reader applications, in which the supporting metal frame for the E-ink display is not required. In this case, the proposed antenna with long, narrow structure can be placed in the space between the casing and the display with the wire routed within the device. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:109–113, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26452