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A generalized balun structure with a single stub is presented in this paper. The balun is designed based on a four-port device with one port set to be open-circuited. Even-odd mode method is applied to analyze its performance. The derived design equations show that multiple sets of solutions are available for the proposed balun. Therefore, it is highly flexible for practical implementations. To validate...
A novel wideband dual-polarized antenna with complementary split-ring resonators (CSRRs) is presented in this letter. The antenna is composed of two cross printed dipole antennas vertically fixed on an aluminum plate as ground plane, which are excited by two similar microstrip baluns. Furthermore, in order to further broaden the impedance bandwidth, the CSRRs are innovatively etched on the printed...
A novel planar antenna with bowtie shape for ultra-wideband (UWB) applications is presented in this paper. The proposed coaxial fed antenna is created by printing a semicircle on both sides of the substrate with two squares etched from the top element and two semicircles etched from the ground respectively. The simulated and measured results have shown that the designed antenna covers the 3.1-10.6...
A novel printed ultra-wideband (UWB) monopole antenna fed by coaxial cable is presented with a modified semicircle ground plane and a semicircle modified radiation patch. The bandwidth of the proposed antenna could increase by properly adjusting the dimensions of the ground plane and the radiation patch. The measured results show that the proposed monopole antenna offers a bandwidth from 2.95 to 11...
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