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