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This letter presents a novel compact wideband circularly polarized antenna by utilizing Vivaldi antenna structure as the design concept. The proposed antenna consists of four exponentially tapered patches, a circular metal wall and a feed network. Four tapered patches are sequentially rotated and vertically located in the circular metal wall which acts as a vertical ground plane. Slot-coupled feed...
A new compact box-shaped antenna based on suspended patch structure, suited for repeater antenna, is proposed in this paper. By employing two shorting plates, the overall antenna size is only about 0.27λ0 × 0.21λ0 × 0.035λ0 (λ0 is the wavelength corresponding to the lower edge 808MHz). With the aid of the fork-shaped feeding strip, bandwidth enhancement is achieved. A 28.8% simulated impedance bandwidth,...
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