High Sensitivity Antenna for Wearable Headset Devices

Abstract

In this manuscript, high sensitivity antenna design technique for Bluetooth headset application is proposed. A planar inverted F antenna (PIFA) was designed on the top printed circuit board (PCB) of a two board PCB. Digital noise was designed as a loop type source on the bottom PCB, representing general noise derived from digital circuits and digital noise generated from the main cable line. The proposed antenna design was analyzed in simulation and verified in measurement. The result of the active measurement shows an increase in sensitivity of 2.23 dB and the simulation results show an increase in isolation of 25 dB.