Design of Second Order Band-Pass Filter with Inductive  -Network Coupling

Abstract This paper presents a realization of fractional-order Band pass-filter (FOBF) based on the concepts of fractional order inductors and fractional order capacitors. The FOBF is designed and implemented using both simulation and hardware approaches. The proposed filter order is considered up to second order or less with any real positive number. One of the cases is considered when α ≤ 1 and β ≥ 1. In the second case, the filter is designed when β ≤ 1 and α ≥ 1. In order to calculate the optimal filter parameters, the modified Particle Swarm Optimization (mPSO) algorithm has been utilized for coefficient tuning. Also, a generalized approach to design any second order FOBF is discussed in this work. The realization and performance assessment have been carried out in simulation environment as well as in lab experiment with field programmable analog array (FPAA) development board. The experimental results indicate the value of efforts to realize the fractional filter.

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Second Order Band-Pass Filter Design Using Single CC-CDBA

Circuits Systems and Signal Processing ◽

10.1007/s00034-008-9038-7 ◽

2008 ◽

Vol 27 (4) ◽

pp. 461-474 ◽

Cited By ~ 9

Author(s):

M. Koksal ◽

M. Sagbas

Keyword(s):

Filter Design ◽

Second Order ◽

Band Pass Filter ◽

Pass Filter ◽

Band Pass

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A multiband 130nm CMOS second order band pass filter for LTE bands

2015 IEEE International Circuits and Systems Symposium (ICSyS) ◽

10.1109/circuitsandsystems.2015.7394073 ◽

2015 ◽

Cited By ~ 1

Author(s):

Noor Ain Kamsani ◽

Veeraiyah Thangasamy ◽

Muhammad Faiz Bukhori ◽

Suhaide Shafie

Keyword(s):

Second Order ◽

Band Pass Filter ◽

Pass Filter ◽

Band Pass

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Fractional Order Capacitor in First-Order and Second-Order Filter

Micro and Nanosystems ◽

10.2174/1876402911666190821100400 ◽

2020 ◽

Vol 12 (1) ◽

pp. 75-78

Author(s):

Kanchan Sengar ◽

Arun Kumar

Keyword(s):

Fractional Order ◽

Second Order ◽

Active Filters ◽

Band Pass Filter ◽

Pass Filter ◽

Low Pass Filter ◽

Order Filter ◽

Low Pass ◽

Band Pass ◽

High Pass

Background: Fractional order Butterworth and Chebyshev (low-pass filter circuits, highpass filter circuits and band-pass filters circuits) types of first and second order filter circuits have been simulated and their transfer function are derived. The effect of change of the fractional order α on the behavior of the circuits is investigated. Objective: This paper presents the use of fractional order capacitor in active filters. The expressions for the magnitude, phase, the quality factor, the right-phase frequencies, and the half power frequencies are derived and compared with their previous counterpart. Methods: The circuits have been simulated using Orcad as well as MATLAB for the different value of α. We have developed the fractional gain and phase equations for low pass filter circuits, high pass filter circuits and band pass filter circuits in Sallen-Key topology. Results: It is observed that the bandwidth increases significantly with fractional order other than unity for the low pass as well as high pass and band pass filters. Conclusion: We have also seen that in the frequency domain, the magnitude and phase plots in the stop band change nearly linearly with the fractional order. If we compare the fractional Butterworth filters for low-pass and high-pass type with conventional filters then we find that the roll-off rate is equal to the next higher order filter.

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Tunable Active Band-Pass RC-Filter

Journal of the Russian Universities Radioelectronics ◽

10.32603/1993-8985-2018-21-2-20-25 ◽

2018 ◽

pp. 20-25

Author(s):

Yu. M. Inshakov ◽

A. V. Belov

Keyword(s):

Resonant Frequency ◽

Transfer Coefficient ◽

Second Order ◽

Band Pass Filter ◽

Q Factor ◽

Pass Filter ◽

Variable Resistor ◽

Active Band ◽

Wide Range ◽

Band Pass

This article provides a technique for design and simulation of an active second order band-pass filter with lineal tuning of Q-factor and independent tuning over a wide range of resonant frequency and transfer coefficient. The tunable band-pass RC-filter is required for selective processing of electric signals in radio engineering systems and devices, as well as in in-formation measuring systems, the acoustic and hydro acoustic equipment, including devices for noise and vibration analysis. The band-pass RC-filter is required in equalizers for allocation of useful signals.It is shown that the filter is constructed on the basis of the active second order correcting link with the use of tunable RCcircuit T-bridge. Calculation formulas for filter parameters are received, i.e. resonant frequency, polar Q-factor and transfer coefficient. It is shown that in the filter circuit these parameters can independently be tunable over a wide range. Resonant frequency of the filter is tuned by means of dual variable resistors with the Q-factor and transfer coefficient remaining constant.Polar Q-factor is regulated by change of resistance of the variable resistor with transfer coefficient and resonant frequency remaining constant. The transfer coefficient changes by means of another variable resistor.The conclusions of expressions for the tuned parameters of the suggested circuit of the active band-pass RC-filter confirming the research are provided, as well as the filter frequency characteristics and tunable parameter diagrams. Filter implementation is supported by simulation with the use of MicroCap10 software.

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