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This paper focuses on an antenna with a stepped slot structure. The paper analyzes the impedance and radiation characteristics of this type of antenna and designs a high-gain wideband antenna that operates in the L-band and S-band. The simulation results show that the antenna has a comparatively high gain, wide impedance bandwidth and beamwidth in the entire L-band and S-band, and can thus be used...
A novel cavity-backed slot antenna array with broadband circularly polarized (CP) property is presented in this letter. A corporate feed network composed of three Wilkinson power dividers is applied to sequentially rotated feed four linearly polarized disks that are located in a cavity-backed circular slot. The measured 3-dB axial-ratio (AR) bandwidth of the array is 54.5%, and the 10-dB return loss...
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