Bent loop Inverted F antenna for TWS Bluetooth earphones

In this paper, bent loop Inverted F antenna (IFA) for True Wireless Stereo (TWS) Bluetooth (BT) earphones is proposed. The proposed antenna is made by loop IFA shape to satisfy BT bandwidth. The bandwidth of BT is 83.5MHz, and proposed antenna’s bandwidth is 84.5 MHz in S11 -6dB . To meet center frequency for BT, the proposed antenna is the bent loop shape. The center frequency is 2.45GHz (BT band). Proposed antenna shows sufficient bandwidth for BT.