Importance

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Abstract

An internal, loop dipole antenna for a mobile terminal is capable of operating in two distinct RF bands. The antenna includes a resonating element and a parasitic tuning element. The resonating element has a looped, dipole configuration including a primary tuning loop, a secondary tuning loop, and a ground loop. The parasitic tuning element is disposed in a plane spaced from the plane of the resonating element. The parasitic element includes a first portion that generally follows the ground loop on the resonating element, and a second portion that bisects the primary tuning loop on the resonating element. First and second tuning arms extend along opposing ends of the parasitic tuning element. The length of the tuning arms is adjusted to tune the resonance of the antenna in the primary and secondary operating bands.

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First Claim