A 330-mu W 400-MHz BPSK Transmitter in 0.18-mu m CMOS for Biomedical Applications

作者：Tsai Yi Lin; Lin Chun Yu; Wang Bang Cyuan; Lin Tsung Hsien^*

来源：IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS, 2016, 63(5): 448-452.

DOI：10.1109/TCSII.2015.2505080

• Binary phase-shift keying (BPSK) transmitter
• edge combiner
• phase-MUX (PM)
• short-range transmission

An energy-efficient 400-MHz binary phase-shift keying (BPSK) transmitter (TX) is proposed for biomedical applications in this brief. The BPSK signal is generated by edge-combining multiple phases from a low-frequency voltage-controlled oscillator (VCO), which avoids power-hungry local oscillator generation at RF. Furthermore, the output matching network and edge combiner are merged into a power amplifier (PA), leading to a hardware-efficient and low-power design. Fabricated in a 0.18-mu m CMOS process, the proposed TX consumes 330 mu W and delivers -15-dBm output power. The modulator operates at 0.8 V, and PA operates at 0.2-V supply voltage. The TX can support a data rate up to 20 Mb/s, achieving an energy efficiency of 14.9 pJ/bit. The measured error vector magnitude at 20 Mb/s is 10%.

• 出版日期2016-5
• 单位中国科学院电工研究所