Abstract
In this article, a novel microstrip Wilkinson power divider (WPD) has been analyzed, simulated, and fabricated, using the proposed triple lines (TLs) in place of the common quarter-wavelength transmission-line. The proposed structure has the high ability of selectivity for designing dimensions. In this direction with the use of PSO algorithm, optimized options will be obtained for the electrical lengths of the TLs. The characteristic admittances, with the intention of fabricating a structure with compact dimensions are also obtained. Besides, three coupled lines theory is used to reach a wideband performance. The proposed triple lines Wilkinson power divider (TLWPD) operates from 0.5 to 4.5 GHz with S11 < −10 dB, which include several wireless communication standards such as GSM, GPS, DCS, PCS, UMTS, WLAN, and WiMAX. The overall size of the TLWPD is 23.5 × 8.3 mm2 or 0.23 λg × 0.08 λg. The results of investigations taken in this article show the fact that the TLWPD, in addition to the small structure dimensions will be a wideband WPD.
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