Wireless Internet. 6th International ICST Conference, WICON 2011, Xi’an, China, October 19-21, 2011, Revised Selected Papers

Research Article

A Tunable CMOS Continuous-Time Filter Designed for a 5.8 GHz ETC Demodulator

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  • @INPROCEEDINGS{10.1007/978-3-642-30493-4_53,
        author={Hang Yu and Lai Jiang and Shengyue Lin and Yan Li and Rongchen Wei and Zhen Ji},
        title={A Tunable CMOS Continuous-Time Filter Designed for a 5.8 GHz ETC Demodulator},
        proceedings={Wireless Internet. 6th International ICST Conference, WICON 2011, Xi’an, China, October 19-21, 2011, Revised Selected Papers},
        proceedings_a={WICON},
        year={2012},
        month={10},
        keywords={ETC receiver Continuous-time filter tunable pass-band operational amplifier},
        doi={10.1007/978-3-642-30493-4_53}
    }
    
  • Hang Yu
    Lai Jiang
    Shengyue Lin
    Yan Li
    Rongchen Wei
    Zhen Ji
    Year: 2012
    A Tunable CMOS Continuous-Time Filter Designed for a 5.8 GHz ETC Demodulator
    WICON
    Springer
    DOI: 10.1007/978-3-642-30493-4_53
Hang Yu1,*, Lai Jiang1,*, Shengyue Lin1, Yan Li1,*, Rongchen Wei1, Zhen Ji1,*
  • 1: Shenzhen University
*Contact email: yuhang@szu.edu.cn, jianglai@szu.edu.cn, liyan@szu.edu.cn, jizhen@szu.edu.cn

Abstract

5.8 GHz is specified as the operating frequency of the electronic tolling collection (ETC) system in the new national highway network in China. A low power, robust radio frequency receiver is the key design challenge in such a system. A 3 order butterworth low-pass filter with tunable pass-band designed for the ETC receiver was presented in this work. The design is based on a single operational amplifier in order to reduce the overall power consumption. The filter was implemented in standard CMOS 0.18 m technology. Simulation shows that the design achieves a maximum 3-dB bandwidth of 2 MHz with 0 dB insertion loss, while the power consumption is only ~200W.