Hybrid Multi-Mode Narrow-Frame Antenna for WWAN/LTE Metal-Rimmed Smartphone Applications

Hybrid Multi-Mode Narrow-Frame Antenna for WWAN/LTE Metal-Rimmed Smartphone Applications

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A hybrid multi-mode narrow-frame antenna for WWAN/LTE metal-rimmed smartphone applications is proposed in this paper.The ground Vice Wallet clearance is only 5 mm $ imes45$ mm, which is promising for narrow-frame smartphones.The metal rim with a small gap is connected to the system ground by three grounded patches.

This proposed antenna can excite three coupled-loop modes and one slot mode.By incorporating these four modes, the proposed antenna can provide coverage for GSM850/900, DCS/PCS/UMTS2100, and LTE2300/2500 operations.Detailed design considerations of the proposed Body Oil antenna are described, and both experimental and simulated results are also presented.