M. C. Fabres, E. A. Daviu, A. V. Nogueira and M. F. Bataller, “The Theory of Characteristic Modes Revisited: A Contribution to the Design of Antennas for Modern Applications,” IEEE Antennas and Propagation Magazine, Vol. 49, No. 5, 2007, pp. 52-68.

has been cited by the following article:

• TITLE: A Comprehensive Parametric Study of Planar Inverted-F Antenna

  AUTHORS: Hassan Tariq Chattha, Yi Huang, Muhammad Kamran Ishfaq, Stephen J. Boyes

  KEYWORDS: Antennas; Planar Antennas; PIFA; Impedance Bandwidth and Empirical Equation

  JOURNAL NAME: Wireless Engineering and Technology, Vol.3 No.1, January 12, 2012

  ABSTRACT: This paper presents a comprehensive numerical and experimental study of Planar Inverted-F Antennas (PIFA) involving all the parameters which may affect the characteristics of PIFA. It is found that PIFA characteristics are affected by a number of parameters including the dimensions of the ground plane, length, width, height and position of the top plate, positions and widths of shorting pin/plate and feed pin/plate. It is also found that the width of feed plate plays an important role in broadening the antenna bandwidth. It is shown that a fractional impedance bandwidth up to 65% can be obtained using an optimized design. Furthermore, a new empirical formula is introduced for the estimation of the central operational frequency of PIFA. These results are very useful for aiding PIFA design in practical applications.