https://scholars.lib.ntu.edu.tw/handle/123456789/352505
標題: | A 200-pJ/b MUX-based RF Transmitter for Implantable Multi-Channel Neural Recording | 作者: | Y.-H. Liu C.-L. Li T.-H. Lin TSUNG-HSIEN LIN |
關鍵字: | Neural recording; Offset quadrature phase-shift keying (O-QPSK) modulation; RF transmitter; Wireless telemetry | 公開日期: | 十月-2009 | 卷: | 57 | 起(迄)頁: | 2533-2541 | 來源出版物: | IEEE T-MTT | 摘要: | This paper presents a 400-MHz energy-efficient offset quadrature phase-shift keying (O-QPSK) transmitter for implantable multichannel neural recording applications. Transmitters for these applications must operate at low power while delivering a high data rate. The proposed transmitter incorporates a phase MUX, which directly implements the phase-shift keying operation. The O-QPSK modulation signal is generated by selecting one of the four quadrature phases based on the baseband data via the phase MUX. The power amplifier adopts the inverter-type topology for it is compatible with the quasi-constant-envelope nature of the O-QPSK signal. Implemented in a 0.18- μm CMOS process, the whole transmitter dissipates 2.9 mA from a 1.2-V supply. With a maximum data rate of 17.5 Mb/s, the proposed transmitter achieves an energy efficiency of 200 pJ/bit and is capable of delivering an output power up to -8 dBm. © 2009 IEEE. |
URI: | http://scholars.lib.ntu.edu.tw/handle/123456789/352505 | DOI: | 10.1109/TMTT.2009.2029955 | SDG/關鍵字: | Base bands; CMOS processs; Constant envelope; Data rates; Energy efficient; High data rate; Low Power; Multi-channel; MUX-Based; Neural recording; Neural recordings; Offset quadrature phase-shift keying (O-QPSK) modulation; Output power; QPSK modulation; RF transmitter; Wireless telemetry; Energy efficiency; Modulation; Phase shift; Power amplifiers; Telemetering equipment; Transmitters; Quadrature phase shift keying |
顯示於: | 電子工程學研究所 |
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