Summary
International Symposium on Antennas and Propagation
2010
Session Number:3TB2
Session:
Number:3TB2-4
2-Port Dual Band PIFA with Improved Isolation
Andrey S. Andrenko,
pp.-
Publication Date:2010/11/23
Online ISSN:2188-5079
Summary:
Planar inverted-F antenna (PIFA) has long become one of the most widely used antenna elements in mobile handset and wireless terminal applications [1]. During the last decade, numerous designs of dual band and multiband PIFA configurations have been proposed and reported in the literature [1-3]. In recent years the compact multiband antennas have attracted much attention for the design of next-generation mobile handsets and smart phones. It is necessary to note that most of dual/multiband PIFA designs presented so far are utilizing single feed while operating at UMTS band (1920-2170 MHz), DCS band (1710-1880 MHz), GSM band (890-960 MHz), and GPS frequency (1575 MHz). Most of these wireless communication services use incompatible modulation standards and, therefore, require different RF receive/transmit circuitry which should be integrated into a modern mobile handset. If a multiband mobile phone antenna utilizes single RF feed, it is necessary to design a duplexer with multiband BP filters for incompatible wireless systems operation. It in turn increases the overall complexity and cost of a mobile handset. Therefore, there is a strong need to provide compact multiband antenna operating with different feeds so that to minimize the antenna ports mutual coupling without any BP filters. This paper presents an original design of 2-port dual band PIFA having low mutual coupling between RF ports and operating at GSM and UMTS frequencies. Both simulation and measured results are presented.