A Single-Chip CMOS Bluetooth Transceiver with 1.5-MHz IF and Direct Modulation Transmitter ; Hiroki Ishikuro M. Hamada, K. Agawa, S. Kousai, H. Kobayashi, D.M.Nguyen, and F. Hatori ; International Solid-State Circuits Conference (ISSCC) ; IEEE ; San Francisco, USA ; ; 2003/02?