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A capacitively loaded PIFA for compact mobile telephone handsets

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2 Author(s)
Rowell, C.R. ; Dept. of Electr. & Electron. Eng., Hong Kong Univ. of Sci. & Technol., Hong Kong ; Murch, R.D.

A capacitively loaded planar inverted-F antenna (PIFA) is proposed and studied. It is found that the capacitive load reduces the resonance length of the PIFA from λ/4 to less than λ/S. A design with a bandwidth of 178 MHz centered at 1.8 GHz is provided to demonstrate that compact antennas for mobile telephone handsets can be constructed using this approach. The finite-difference time-domain (FDTD) method is used in the study and experimental verification is also provided

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Antennas and Propagation, IEEE Transactions on  (Volume:45 ,  Issue: 5 )