Abstract
A fourth-order complex band-pass continuous-time filter with automatic tuning for a WSN transceiver is presented. The active transconductance-capacitor (Gm-C) filter was chosen for low power consumption and designed by series of two two-order filter units. The two-order filter is achieved with the source follower structure, which could get the image rejection as large as possible under the lowest power consumption. The center frequency and bandwidth deviation due to the process corner, aging and temperature deviation are adjusted by an automatic frequency tuning circuit. The core of the filter in a 0.18 μm RF CMOS technology consumes about 0.27 mA current from a 1.8 V power supply. The simulation results show that the bandwidth is about 2.2 MHz and the center frequency is about 2 MHz with automatic frequency tuning. The voltage gain of filter is about −0.8 dB, the ripple in the pass band is lower than 0.1 dB, and the image rejection ratio is larger than 30 dB at −2 MHz.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsReferences
Emira AA, Sanchez-Sinencio E (2003) A pseudo differential complex filter for bluetooth with frequency tuning. IEEE Trans Circuits Syst II Analog and Digit Signal Process 50(10):742–754
Liu H, Fu Z, Lin F (2012) A low power Gm-C complex filter for ZigBee receiver. In: ICMMT 2012 international conference on microwave and millimeter wave technology, pp 1–4. doi: 10.1109/ICMMT.2012.6229961
Zanbaghi R, Atarodi M (2006) An ultra low power Gm-C complex filter for low-IF wireless PAN applications. In: TENCON 2006-IEEE region 10th conference, 14–17 Nov 2006, pp 1–4. doi:10.1109/TENCON.2006.344131
Sun J, Li Z, Li Z, Li W (2011) Design of tuning circuit for a Gm-C complex band-pass filter. J Southeast Univ (Natural Sci Ed) 41(4):682–686. doi:10.3969/j.issn.1001-0505.2011.04.005
Krummenacher F, Joehl N (1988) A 4 MHz CMOS continuous-time filter with on-chip automatic tuning. IEEE J Solid-State Circuits 23(3):750. doi:10.1109/4.315
Wan C, Li Z (2009) A 2 MHz CMOS Gm-C complex filter with automatic tuning for wireless sensor networks application. In: 15th Asia-Pacific conference on communications (APCC 2009), pp 199–202. doi:10.1109/APCC.2009.5375657
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2014 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Meng, L., Li, Z. (2014). Design of 2 MHz CMOS Gm-C Complex BPF with Automatic Tuning for WSN Node. In: Farag, A., Yang, J., Jiao, F. (eds) Proceedings of the 3rd International Conference on Multimedia Technology (ICMT 2013). Lecture Notes in Electrical Engineering, vol 278. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-41407-7_22
Download citation
DOI: https://doi.org/10.1007/978-3-642-41407-7_22
Published:
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-41406-0
Online ISBN: 978-3-642-41407-7
eBook Packages: EngineeringEngineering (R0)