Comparación de métodos de excitación de parche rectangular alimentado por CPW en banda Ku
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This paper presents the design and measures of different apertura coupling configurations for CPW-fed rectangular patch antennas working at Ku band with linear polarization. Coplanar waveguide inside the ground plane allows to use a single substrate layer in aperture coupling. The configurations proposed here have different slot shapes. Two short-circuited: basic rectangular and divided rectangular, and one open-circuited: basic rectangular with matching stub configurations are presented in the article, in which several parameters are available to control patch excitation so as to obtain optimum resonance and matching of the antenna. Measures prove its conformity in resonance (shift<0.5%) and matching with previous simulations, additionally offering a wide bandwidth for this kind of antennas (BW -10dB>700 MHz, 4%). Remarkably, the fabrication process proves to be of high repetibility and versatility against asimetries and moderate errors in real dimensions.
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