A 2.4 GHz ISM Band OOK Transceiver With High Energy Efficiency for Biomedical Implantable Applications. - Shuenn-Yuh Lee; Po-Hao Cheng; Ching-Fu Tsou; Chou-Ching K. Lin; Gia-Shing Shieh (IEEE Trans. Biomed. Circuits Syst., 2020)