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Progress In Electromagnetics Research C
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DESIGN OF A UWB COMBINED ANTENNA AND AN ARRAY OF MINIATURIZED ELEMENTS WITH AND WITHOUT LENS

By A. Mehrdadian and K. Forooraghi

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Abstract:
In this paper, the design of an array of wideband combined antenna elements is presented. A TEM horn antenna is combined with magnetic dipoles to obtain a wideband element with a bandwidth from 180 MHz to 30 GHz. The element is then miniaturized in order to be placed in a two by two array, and then the optimized values of the horizontal and vertical spacings are calculated. To enhance the array bandwidth, a lens is placed in front of each element. This leads to an increase in the bandwidth from 0.2 to 10 GHz while no grating lobes appear over the bandwidth. The combined element is fabricated and the simulation results are verified by the measured data. Furthermore, simulation results for the return loss, radiation patterns and antenna gain for the 2 × 2 array are presented.

Citation:
A. Mehrdadian and K. Forooraghi, "Design of a UWB Combined Antenna and an Array of Miniaturized Elements with and Without Lens," Progress In Electromagnetics Research C, Vol. 39, 37-48, 2013.
doi:10.2528/PIERC13030401

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