Abstract
A broadband dual-feed dual-polarized microstrip antenna with low cross polarization and high isolation is presented. The dual- orthogonal linearly polarized mode is excited by two difierent feed mechanisms from a single circular radiating patch. One of the two modes is excited by a pair of L-shaped probes with a 180 - phase difierences, and the other is excited by an H-shaped aperture. The proposed design has a very simple antenna structure with a wide input impedance bandwidth (23.25% for Port 1 and 35% for Port 2) and also its two input port isolation is found to be as low as i40dB. Measured results of the fabricated antenna prototypes are also carried out to verify the simulation analysis.
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