Mda metal antenna and mobile terminal based on single-feed multi-section ground structure

Abstract

This invention discloses an MDA metal antenna and mobile terminal based on a single-feed multi-segment grounding structure, relating to the field of antenna technology. The antenna includes a metal back shell, a radiator disposed above the back shell, a single feed point, and at least two spatially separated grounding branches. By designing the radiator as an elongated structure to excite a low-frequency fundamental resonance, and combining this with multiple grounding branches distributed on the radiator to excite high-frequency resonant modes, the coupling of multiple resonant modes effectively extends the antenna's operating bandwidth to cover the 3.3-4.2 GHz frequency band while maintaining the integrity of the metal back shell, and significantly improves the antenna's radiation efficiency. This invention has a compact structure, is easy to integrate, and is suitable for mobile terminal devices with high requirements for appearance and performance.

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