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Communication engineering and systems
A ceramic chip planar inverted-F antenna (PIFA) is proposed for integration into a mobile handset providing UWB functionality across band groups 3 and 6. The antenna design exhibits a total efficiency of greater than 50% across the entire 6.39 GHz bandwidth while maintaining a very small volume of 57.6 mm^3 . The antenna uses a combination of the normal PIFA resonance and a second resonance due to the ceramic block to achieve a broad ultrawideband (UWB) bandwidth.
Kearney, D., John, M. & Ammann, M.J. (2010) Miniature Ceramic PIFA for UWB Band Group 3 & 6. IEEE Antennas and Wireless Propagation Letters, vol. 9, 2010 pp. 28-31. doi:10.1109/LAWP.2010.2041423