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In this paper, a wide-band monopole antenna structure printed on 104-um E4D paper, a thin, flexible and low cost substrate, has been proposed. For the design process, E4D paper was characterized to obtain its electromagnetic properties by the cavity perturbation method with a cylindrical cavity. Then the antenna was designed and optimized to a wide range of frequency, from 2 GHz to 10 GHz focusing...
A frequency reconfigurable Planar Inverted-F Antenna (RPIFA) antenna is proposed. From an initial 8-shape patch antenna by connecting or disconnecting one or more PIN diode, ten different structures are obtained. Corresponding to ten different geometries such as I-shape patch, U-shape patch, E-shape patch, etc, the antenna can be tuned in two frequency bands from 2GHz to 3GHz and from 4GHz to 7GHz...
A frequency reconfigurable Planar Invert F Antenna (RPIFA) is proposed. Starting at an initial antenna with triangular patch are made up of parts of the triangle is smaller. When converting this section the center or axis of rotation, different structures are obtained. Corresponding to the geometry, such as rectangular, square... the antenna's frequency range covers from 2GHz to 3.5GHz. In this paper,...
Genetic Algorithm was used to optimize the ground plane shape of planar inverted F antenna (PIFA) on FR-4 substrate designed for broadband applications. The initial PIFA antenna design had 36% bandwidth and its central frequency was 2 GHz. Novel optimized antennas were presented. A relative bandwidth about 88 % was obtained with the optimized antenna. With this procedure the total bandwidth increased...
A compact PIFA with polarization and frequency agility was presented. It was shown that using groups of pin diodes the polarization can be switched between two orthogonal linear polarizations. This antenna is devoted to RF front-end of wireless systems using polarization diversity at the reception. Switching between two frequencies can also be achieved. The antenna presented can cover the entire 2...
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