A 0.5 V tunable complex filter for Bluetooth and Zigbee using OTAs

作者：Arya Richa; Souliotis George^*; Vlassis Spyros; Psychalinos Costas

来源：Analog Integrated Circuits and Signal Processing, 2014, 79(1): 73-81.

DOI：10.1007/s10470-013-0241-5

• CMOS analog integrated circuits
• Ultra-low voltage filters
• Gm-C filters
• Complex filters
• Bluetooth/Zigbee filters

A 12th-order low voltage tunable differential complex filter for bluetooth and Zigbee applications is proposed in this paper. The filter is based on improved controllable transconductors operating with the ultra-low supply voltage of 0.5 V. Simulation results using a triple-well 0.13 mu m CMOS technology verify the filter operation fulfilling all the requirements for the complex filtering stage in bluetooth or Zigbee receivers. The in-band group delay variation is 0.79 mu s for bluetooth and 0.46 mu s for Zigbee. The image rejection ratio is greater than 71 dB and the achieved in-band spurious free dynamic range is 42 dB.

• 出版日期2014-4