Abstract
This paper presents a comb filter to suppress power line interference in biomedical signals. The filter is based on OTA-C topology and the rejection frequency of the filter is tunable by changing the transconductance of the OTA. This filter is designed in Tanner EDA tool in 45 nm technology and is powered by 1.1 V supply. This Designed filter achieves a stop band attenuation of 24 dB for 50 Hz, 150 Hz and 250 Hz frequencies. A comb filter using OTA-C topology is designed. The filter is designed using 45 nm CMOS technology in Tanner EDA tool and simulated using TSPICE simulator. The performance of the filter is as expected. This filter has more number of active components than but has less number of passive components. One more advantage of OTA-C based filter design is that by simply controlling the bias current of OTAs, electronic tuning of filter parameters such as center frequency and quality factor can be achieved. Future scope of this design can be to implement it using low power OTA cell in 14 nm FinFET technology. This way power consumption and chip area will be reduced.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Huhta, J.C., Webster, J.G.: 60-Hz interference in electrocardiography. IEEE Trans. Biomed. Eng. 20(2), 91–101 (1973)
Li, H., Zhang, J., Wang, L.: A fully integrated continuous-time 50-Hz notch filter with center frequency tunability. In: 33rd Annual International Conference of the IEEE EMBS Boston, Massachusetts, USA, 30 August–3 September 2011 (2011)
Piskorowski, J.: Power line interference removal from ECG signal using notch filter with non-zero initial conditions. In: Proceedings of the IEEE International Symposium on Medical Measurements and Application (MeMeA 2012), pp. 1–3. University of Technology, Budapest, May 2012
Tsai, C.-T., Chan, H.-L., Tseng, C.-C., Wu, C.-P.: Harmonic interference elimination by an active comb filter [ECG application]. In: Proceedings of 16th Annual International Conference of IEEE Engineering in Medicine and Biology Society, Baltimore, MD, USA, vol. 2, pp. 964–965, November 1994
Tsai, C.-D., Chiou, D.-C., Lin, Y.-D., Chan, H.-L., Wu, C.-P.: An active comb filter design for harmonic interference removal. J. Chin. Inst. Eng. 21(5), 605–610 (1998)
Ranjan, R.K., Yalla, S.P., Sorya, S., Paul, S.K.: Active comb filter using operational transconductance amplifier. Act. Passiv. Electron. Compon. 2014, Article no. 587932, 6 p. (2014). https://doi.org/10.1155/2014/587932
Ling, C., Ye, P., Liu, R., Wang, J.: A low-pass power notch filter based on an OTA—C structure for electroencephalogram. In: Proceedings of the International Symposium on Intelligent Signal Processing and Communications Systems (ISPACS 2007), Xiamen, China, pp. 451– 453, December 2007. Patent 3 624 12, 16 July 1990
Duzenlia, G., Kcili, Y., Kuntmanc, H., Atamanb, A.: On the design of low-frequency filters using CMOS OTAs operating in the subthreshold region. Microelectron. J. 30(1), 45–54 (1999)
Geiger, R.L., Sánchez-Sinencio, E.: Active filter design using operational transconductance amplifiers: a tutorial. IEEE Circuits Devices Mag. 1(2), 20–32 (1985)
Abbasalizadeh, S., Sheikhaei, S., Forouzandeh, B.: A 0.9 V supply OTA in 0.18 μm CMOS technology and its application in realizing a tunable low-pass Gm-C filter for wireless sensor networks. Circuits Syst. Sci. Res. 4(1), 34–43 (2013)
Ma, C.-T., Mak, P.-I., Vai, M.-I., Mak, P.-U.: A 90 nm CMOS bio-potential front end with improved powerline interference rejection. In: International Symposium on Circuits and Systems IEEE, Taipei, 24–27 May 2009, pp. 665–668 (2009)
Saberhosseini, S.S., Zabihian, A., Sodagar, A.M.: Low-noise OTA for neural amplifying applications. In: 2012 8th International Caribbean Conference on Devices, Circuits and Systems (ICCDCS) (2012)
Acknowledgment
I would like to acknowledge my gratitude to a number of people who have helped me in different ways for the successful completion of my thesis. I take this opportunity to express a deep sense of gratitude towards my guide, Mr. Anil Kumar Sahu, Asst. Prof. (ET&T), Shri Shankaracharya Technical Campus, Bhilai for providing excellent guidance, encouragement and inspiration throughout the project work. Without his invaluable guidance, this work would never have been a successful one.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2019 Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Sahu, A.K., Sahu, A.K. (2019). Low Transconductance OTA Based Active Comb Filter for Biomedical Applications. In: Luhach, A., Singh, D., Hsiung, PA., Hawari, K., Lingras, P., Singh, P. (eds) Advanced Informatics for Computing Research. ICAICR 2018. Communications in Computer and Information Science, vol 956. Springer, Singapore. https://doi.org/10.1007/978-981-13-3143-5_12
Download citation
DOI: https://doi.org/10.1007/978-981-13-3143-5_12
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-13-3142-8
Online ISBN: 978-981-13-3143-5
eBook Packages: Computer ScienceComputer Science (R0)