IEICE TRANSACTIONS on Fundamentals
Design and Implementation of High-Speed and High-Q Active Bandpass Filters with Reduced Sensitivity to Integrator Nonideality
Summary :
An integrator is quite a suitable active element for high-speed filters. The effect of its excess phase shifts, however, is severe in the case of high-Q filter realization. The deterioration due to the excess phase shifts cannot be avoided when only integrators are used as frequency-dependent elements like in leapfrog realization. This paper describes a design of second-order high-speed and high-Q filters with low sensitivity to excess phase shifts of integrators by adding a passive RC circuit. The proposed method can drastically reduce the effect due to the undesirable pole of an integrator, which is the cause of the excess phase shifts, compared to conventional filters using only integrators. As an example, a fourth-order bandpass filter with 5-MHz center frequency and Q=25 is implemented by the proposed method on a monolithic chip. The results obtained here show quite good agreement with the theoretical values. This demonstrates effectiveness of the proposed method and feasibility of high-speed and high-Q filters on a monolithic chip.
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- IEICE TRANSACTIONS on Fundamentals Vol.E76-A No.2 pp.174-182
- Publication Date
- 1993/02/25
- Publicized
- Online ISSN
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- Type of Manuscript
- Special Section PAPER (Special Section on High-Speed Analog Circuits and Signal Processing)
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Kazuyuki HORI, Shigetaka TAKAGI, Tetsuo SATO, Akinori NISHIHARA, Nobuo FUJII, Takeshi YANAGISAWA, "Design and Implementation of High-Speed and High-Q Active Bandpass Filters with Reduced Sensitivity to Integrator Nonideality" in IEICE TRANSACTIONS on Fundamentals,
vol. E76-A, no. 2, pp. 174-182, February 1993, doi: .
Abstract: An integrator is quite a suitable active element for high-speed filters. The effect of its excess phase shifts, however, is severe in the case of high-Q filter realization. The deterioration due to the excess phase shifts cannot be avoided when only integrators are used as frequency-dependent elements like in leapfrog realization. This paper describes a design of second-order high-speed and high-Q filters with low sensitivity to excess phase shifts of integrators by adding a passive RC circuit. The proposed method can drastically reduce the effect due to the undesirable pole of an integrator, which is the cause of the excess phase shifts, compared to conventional filters using only integrators. As an example, a fourth-order bandpass filter with 5-MHz center frequency and Q=25 is implemented by the proposed method on a monolithic chip. The results obtained here show quite good agreement with the theoretical values. This demonstrates effectiveness of the proposed method and feasibility of high-speed and high-Q filters on a monolithic chip.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e76-a_2_174/_p
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@ARTICLE{e76-a_2_174,
author={Kazuyuki HORI, Shigetaka TAKAGI, Tetsuo SATO, Akinori NISHIHARA, Nobuo FUJII, Takeshi YANAGISAWA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Design and Implementation of High-Speed and High-Q Active Bandpass Filters with Reduced Sensitivity to Integrator Nonideality},
year={1993},
volume={E76-A},
number={2},
pages={174-182},
abstract={An integrator is quite a suitable active element for high-speed filters. The effect of its excess phase shifts, however, is severe in the case of high-Q filter realization. The deterioration due to the excess phase shifts cannot be avoided when only integrators are used as frequency-dependent elements like in leapfrog realization. This paper describes a design of second-order high-speed and high-Q filters with low sensitivity to excess phase shifts of integrators by adding a passive RC circuit. The proposed method can drastically reduce the effect due to the undesirable pole of an integrator, which is the cause of the excess phase shifts, compared to conventional filters using only integrators. As an example, a fourth-order bandpass filter with 5-MHz center frequency and Q=25 is implemented by the proposed method on a monolithic chip. The results obtained here show quite good agreement with the theoretical values. This demonstrates effectiveness of the proposed method and feasibility of high-speed and high-Q filters on a monolithic chip.},
keywords={},
doi={},
ISSN={},
month={February},}
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TY - JOUR
TI - Design and Implementation of High-Speed and High-Q Active Bandpass Filters with Reduced Sensitivity to Integrator Nonideality
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 174
EP - 182
AU - Kazuyuki HORI
AU - Shigetaka TAKAGI
AU - Tetsuo SATO
AU - Akinori NISHIHARA
AU - Nobuo FUJII
AU - Takeshi YANAGISAWA
PY - 1993
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E76-A
IS - 2
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - February 1993
AB - An integrator is quite a suitable active element for high-speed filters. The effect of its excess phase shifts, however, is severe in the case of high-Q filter realization. The deterioration due to the excess phase shifts cannot be avoided when only integrators are used as frequency-dependent elements like in leapfrog realization. This paper describes a design of second-order high-speed and high-Q filters with low sensitivity to excess phase shifts of integrators by adding a passive RC circuit. The proposed method can drastically reduce the effect due to the undesirable pole of an integrator, which is the cause of the excess phase shifts, compared to conventional filters using only integrators. As an example, a fourth-order bandpass filter with 5-MHz center frequency and Q=25 is implemented by the proposed method on a monolithic chip. The results obtained here show quite good agreement with the theoretical values. This demonstrates effectiveness of the proposed method and feasibility of high-speed and high-Q filters on a monolithic chip.
ER -
English
