A wideband bow tie antenna includes a guiding unit, a radiating unit, and a reflecting unit. The radiating unit is configured between the guiding unit and the reflecting unit. The radiating unit includes a guiding substrate and a guiding patch configured on the guiding substrate. The radiating unit includes a radiating substrate and a first bow tie radiator which is configured on the radiating substrate and coupled with the guiding patch. The first bow tie radiator includes two single radiating portions which are symmetrically configured to each other. The reflecting unit includes a reflecting substrate and a loop reflecting patch which are configured on the reflecting substrate and coupled with the first bow tie radiator.
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