Wide-band slot antennas with CPW feed lines: hybrid and log-periodic designs |
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Authors: | Bhobe AU Holloway CL Piket-May M Hall R |
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Affiliation: | Electr. & Comput. Eng. Dept., Univ. of Colorado, Boulder, CO, USA; |
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Abstract: | In microwave and millimeter wave applications, slot antennas fed by coplanar waveguide (CPW) lines are receiving increasing attention. These antennas have several useful properties, such as a wider impedance bandwidth compared to microstrip patch antennas, and easier integration of solid-state active devices. In this paper novel CPW-fed wideband slot antennas are presented. The design procedure of CPW-fed hybrid slot antennas (HSA) having impedance bandwidths (VSWR<2) up to 57% is described. Theoretical and measured results are shown. We also describe the design procedure of a CPW-fed log-periodic slot antenna (LPSA). The impedance matching and the radiation characteristics of these structures were studied using a method of moment technique. Simulated and measured results for different dielectrics are presented. |
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