A Low-Voltage Tunable Channel Selection Filter for WiMAX Applications
This paper proposes a low-voltage and low-power
fully integrated digitally tuned continuous-time channel selection
filter for WiMAX applications. A 5th-order elliptic low-pass filter is
realized in a Gm-C topology. The bandwidth of the fully differential
filter is reconfigurable from 2.5MHz to 20MHz (8x) for different
requirements in WiMAX applications. The filter is simulated in a
standard 90nm CMOS process. Simulation results show the THD
(@Vout =100mVpp) is less than -66dB. The in-band ripple of the
filter is about 0.15dB. The filter consumes 1.5mW from a supply
voltage of 0.9V.
[1] D.-R. Huang, S.-W. Kao, and Y.-H. Pang, "A WiMAX Receiver with
Variable Bandwidth of 2.5 - 20 MHz and 93 dB Dynamic Gain Range in
0.13-╬╝m CMOS Process", IEEE Radio Frequency Integrated Circuits
Symposium, June 2007, pp. 369-372.
[2] S. Hori, T. Maeda, H. Yano, N. Matsuno, K. Numata, N. Yoshida, Y.
Takahashi, T. Yamase, R. Walkington, and H. Hida, "A Widely Tunable
CMOS Filter With Neg- ative Source Degeneration Resistor
Transconductor", IEEE Solid-State Circuits Conference, Sept. 2003, pp.
449- 452.
[3] J. Jiang; Y. Wang, "Design of A Tunable Frequency CMOS Fully
Differential Fourth-order Chebyshev Filter", Elsevier, Microelectronics
Journal, vol. 37, June 2006, pp. 84-90.
[4] D.A. Johns and K.W. Martin, Analog Integrated Circuit Design, Wiley,
New York, 1997.
[5] T. sanchez-Rodriguez, C.I. Lujan-Martinez, R.G. Carvajal, J. Ramirez-
Angulo and A. Lopez-Martin, "CMOS Linear Programmable
Transconductor Suitable For Adjustable Gm-C Filters", Electronics
Letters, vol. 44, no. 8, April 2008, pp. 505-506.
[6] E. Sanchez-Sinencio, "Common-mode Feedback Techniques: A
Tutorial", Texas A&M University, Feb. 2005.
[7] U. Stehr, F. Henkel, L. Dalluge, P. Waldow, "A Fully Differential
CMOS Integrated 4th Order Reconfigurable Gm-C Lowpass Filter for
Mobile Applications", IEEE International Conference on Electronics,
Circuits and Systems (ICECS), vol. 1, Dec. 2003, pp. 144-147.
[1] D.-R. Huang, S.-W. Kao, and Y.-H. Pang, "A WiMAX Receiver with
Variable Bandwidth of 2.5 - 20 MHz and 93 dB Dynamic Gain Range in
0.13-╬╝m CMOS Process", IEEE Radio Frequency Integrated Circuits
Symposium, June 2007, pp. 369-372.
[2] S. Hori, T. Maeda, H. Yano, N. Matsuno, K. Numata, N. Yoshida, Y.
Takahashi, T. Yamase, R. Walkington, and H. Hida, "A Widely Tunable
CMOS Filter With Neg- ative Source Degeneration Resistor
Transconductor", IEEE Solid-State Circuits Conference, Sept. 2003, pp.
449- 452.
[3] J. Jiang; Y. Wang, "Design of A Tunable Frequency CMOS Fully
Differential Fourth-order Chebyshev Filter", Elsevier, Microelectronics
Journal, vol. 37, June 2006, pp. 84-90.
[4] D.A. Johns and K.W. Martin, Analog Integrated Circuit Design, Wiley,
New York, 1997.
[5] T. sanchez-Rodriguez, C.I. Lujan-Martinez, R.G. Carvajal, J. Ramirez-
Angulo and A. Lopez-Martin, "CMOS Linear Programmable
Transconductor Suitable For Adjustable Gm-C Filters", Electronics
Letters, vol. 44, no. 8, April 2008, pp. 505-506.
[6] E. Sanchez-Sinencio, "Common-mode Feedback Techniques: A
Tutorial", Texas A&M University, Feb. 2005.
[7] U. Stehr, F. Henkel, L. Dalluge, P. Waldow, "A Fully Differential
CMOS Integrated 4th Order Reconfigurable Gm-C Lowpass Filter for
Mobile Applications", IEEE International Conference on Electronics,
Circuits and Systems (ICECS), vol. 1, Dec. 2003, pp. 144-147.
@article{"International Journal of Electrical, Electronic and Communication Sciences:63428", author = "Kayvan Ahmadi and Hossein Shamsi", title = "A Low-Voltage Tunable Channel Selection Filter for WiMAX Applications", abstract = "This paper proposes a low-voltage and low-power
fully integrated digitally tuned continuous-time channel selection
filter for WiMAX applications. A 5th-order elliptic low-pass filter is
realized in a Gm-C topology. The bandwidth of the fully differential
filter is reconfigurable from 2.5MHz to 20MHz (8x) for different
requirements in WiMAX applications. The filter is simulated in a
standard 90nm CMOS process. Simulation results show the THD
(@Vout =100mVpp) is less than -66dB. The in-band ripple of the
filter is about 0.15dB. The filter consumes 1.5mW from a supply
voltage of 0.9V.", keywords = "Common-mode feedback, continuous-time, fully
differential transconductor, Gm-C topology, low-voltage", volume = "4", number = "11", pages = "1681-5", }