CMOS implementation of a low-power BPSK demodulator for wireless implantable neural command transmis

• 作 者: 吴朝晖 张旭 梁志明 李斌
• 机 构: Institute of Microelectronics,School of Electronic and Information Engineering,South China Universit
• 出 处: 半导体学报
• 发表日期: 2012年05期
• 关键词: implantable BPSK analog command correctly recording replace multiplier waveform

A new BPSK demodulator was presented.By using a clock multiplier with very simple circuit structure to replace the analog multiplier in the traditional BPSK demodulator,the circuit structure of the demodulator became simpler and hence its power consumption became lower.Simpler structure and lower power will make the designed demodulator more suitable for use in an internal single chip design for a wireless implantable neural recording system.The proposed BPSK demodulator was implemented by Global Foundries 0.35μm CMOS technology with a 3.3 V power supply.The designed chip area is only 0.07 mm~2 and the power consumption is 0.5 mW.The test results show that it can work correctly.

A new BPSK demodulator was presented. By using a clock multiplier with very simple circuit structure to replace the analog multiplier in the traditional BPSK demodulator, the circuit structure of the demodulator became simpler and hence its power consumption becomes lower. Simple structure and lower power will make the designed demodulator more suitable for use in an internal single chip design for a wireless implantable neural recording system. The proposed BPSK demodulator was implemented by Global Foundries 0.35μm CMOS technology with a 3.3 V power supply. The designed chip area is only 0.07 mm ~ 2 and the power consumption is 0.5 mW.The test results show that it can work correctly.