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A low‐profile linear tightly couple dipole array (TCDA) with wide impedance bandwidth and wide‐angle scanning is proposed in this letter. To implement the design concept of TCDA in a linear array, vertical metal walls are loaded on two sides of the array, which aims to provide the electromagnetic boundaries that are destroyed in the initial linear TCDA. Slots are notched on the ground plane, so as...
A new type of dual-polarization and dual-band sleeve monopole antenna is presented. The proposed antenna is composed of a circular patch and disc-conical sleeve, both of which are shorted to the ground plane through four shorting probes. Five probes are used to feed for the linear-polarization and circular-polarization. Of this antenna, the linearly-polarized can achieve an impedance bandwidth of...
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