High-Sensitivity Ground Radiation Antenna System Using an Adjacent Slot for Bluetooth Headsets


During this communication, we introduce a high-sensitivity antenna system for Bluetooth headsets handling the various and unidentified noises in a very printed circuit board (PCB). This antenna system consists of a ground radiation antenna for Bluetooth applications and an adjacent slot for noise suppression. A loop-kind circuit is employed to model a noise source on the PCB to produce wide-frequency spectrum noise currents to analyze the noise performance of the high-sensitivity antenna system. Decoupling between the noise sources and also the antenna port will result in high sensitivity. An adjacent slot is designed as half of the system to boost the sensitivity, primarily based on the decoupling theorem. This proposed system is effective and applicable for high-sensitivity antenna design, as verified through simulation and active measurements of Bluetooth headsets.

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