Abstract
A novel, two-in-one, planar inverted-F antenna (PIFA) having two signal feeding ports to operate in the 2.4 band for wireless module applications is proposed. The PIFA was of a symmetrical structure and can be fully integrated into the printed circuit board (PCB) of the module by through-hole soldering. The design was comprised of two sub-antennas of identical size and had two shorting portions linked by a horizontal strip. This structure allows the antenna to be stamped from one metal plate only at low cost and surface mountable as a dual-in-line package (DIP) component with four leads. Further, by incorporating a decoupling, neutralization line shunted at around the two shorting portions, the antenna port isolation less than −20 dB over the 2.4 GHz band can be achieved. The radiating strip of the PIFA mainly extended along the edge of the PCB, and the neutralization line in this study occupied very little board space. Details of the design prototypes are described and discussed in the article. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2433–2438, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27071
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