Abstract
In this letter, a low profile stacked patch antenna is proposed for UWB operations. The antenna design is comprised of three patches; a 35° angularly folded patch feed (bottom patch), T-shaped patch (middle patch), and strip-loaded patch (top patch). The wide bandwidth is achieved with the integration of a 35° angularly folded patch feed with a T-shaped patch. The antenna's size is reduced by using the shorting wall technique. The existence of electromagnetic coupling between the T-shaped patch and strip-loaded patch further improves the impedance bandwidth. The design exhibits a compact electrical dimension of 0.12λ×0.14λ×0.08λ, where λ is the wavelength of the lowest operating frequency. The measured results showed that the antenna can achieve a bandwidth of 107.46% (3.1-10.3 GHz). Acceptable gain, stable radiation patterns, and low group delay variation in the operating band are achieved as well. These measured results signify the effectiveness of the proposed antenna configuration in the context of UWB application.
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