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Article
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In this paper, a patch array antenna with wideband circular polarization and high gain is proposed by utilizing a hybrid metasurface (MS). A corner-cut slotted patch antenna was chosen as the source due to the possible generation of CP mode. The hybrid MS (HMS), consisting of a receiver MS (RMS) arranged in a 2 × 2 array of squared patches and a li...
Conference Paper
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This paper presents the design, analysis, and performance evaluation of a dual circularly polarized array antenna with beam-switching functionality. The design methodology involves the integration of two patch antenna elements, a hybrid coupler, and two 180-deg. switchable phase shifters. Based on the input port of the hybrid coupler, the proposed...
Article
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The design of a single-band singly-layered reflectarray fed by a circularly polarized 2x2 microstrip patch antenna array with corporate feeding to be used in K-band (18.7–19.2 GHz) is proposed in this paper. It is demonstrated by simulations and measurements that the axial ratio bandwidth performance of the reflectarray depends strongly on the circ...