A Comparison of Three Active Analogue Band-Pass Filter Circuits

This paper demonstrates the design and implementation of an inductorless analog band-pass filter (BPF). Band-pass filters are widely used in communication systems, wireless transceivers and audio systems, they only pass signals within a desired frequency range. The principles mentioned in this article can be generalized to design any analog filter regardless of its order, approximation and prototype. The design procedure can be broken down into three main parts, first of all, a passive low-pass filter (LPF) is implemented, then the passive LPF is converted into a passive BPF. Finally, the passive BPF is transformed into an active BPF by adding operational amplifiers. The active BPF is then modified into two different topologies, the first in which the inductors are replaced with simulated- inductors (gyrators), while in the second topology, less operational amplifiers are used. <br>

Download Full-text

Implementation of an Inductorless 5th Order Band-Pass Filter

10.36227/techrxiv.16689229 ◽

2021 ◽

Author(s):

Ara Abdulsatar Assim Assim

Keyword(s):

Communication Systems ◽

Order Approximation ◽

Design Procedure ◽

Operational Amplifiers ◽

Band Pass Filter ◽

Analog Filter ◽

Pass Filter ◽

Low Pass Filter ◽

Low Pass ◽

Band Pass

This paper demonstrates the design and implementation of an inductorless analog band-pass filter (BPF). Band-pass filters are widely used in communication systems, wireless transceivers and audio systems, they only pass signals within a desired frequency range. The principles mentioned in this article can be generalized to design any analog filter regardless of its order, approximation and prototype. The design procedure can be broken down into three main parts, first of all, a passive low-pass filter (LPF) is implemented, then the passive LPF is converted into a passive BPF. Finally, the passive BPF is transformed into an active BPF by adding operational amplifiers. The active BPF is then modified into two different topologies, the first in which the inductors are replaced with simulated- inductors (gyrators), while in the second topology, less operational amplifiers are used. <br>

Download Full-text

Sizing of 4th order Active Band-Pass Filter based on Multiple Feed-Back Topology by using the Genetic Algorithm

International Journal of Advanced Trends in Computer Science and Engineering ◽

10.30534/ijatcse/2020/1091.52020 ◽

2020 ◽

Vol 9 (1.5) ◽

pp. 62-68

Author(s):

EL BEQAL Asmae

Keyword(s):

Genetic Algorithm ◽

Band Pass Filter ◽

Pass Filter ◽

Active Band ◽

Band Pass

Download Full-text

Coexisting infinitely many attractors in active band-pass filter-based memristive circuit

Nonlinear Dynamics ◽

10.1007/s11071-016-2988-6 ◽

2016 ◽

Vol 86 (3) ◽

pp. 1711-1723 ◽

Cited By ~ 138

Author(s):

Bocheng Bao ◽

Tao Jiang ◽

Quan Xu ◽

Mo Chen ◽

Huagan Wu ◽

...

Keyword(s):

Band Pass Filter ◽

Pass Filter ◽

Active Band ◽

Band Pass ◽

Memristive Circuit

Download Full-text

Design and Development of Filtering Antenna for S-Band Applications with High out-of-band Rejection

International Journal of Innovative Technology and Exploring Engineering - Special Issue ◽

10.35940/ijitee.a1038.1191s19 ◽

2019 ◽

Vol 9 (1S) ◽

pp. 180-187

Keyword(s):

Antenna Array ◽

Patch Antenna ◽

Equivalent Circuit Model ◽

Design Procedure ◽

Pass Band ◽

Band Pass Filter ◽

Coupled Resonators ◽

Pass Filter ◽

Antenna Structure ◽

Band Pass

In this paper, the design, simulation and fabrication of a filtering antenna is proposed. The filtering antenna structure is, therefore, framed by integrating elements, such as the feed line, parallel coupled resonators and the microstrip patch antenna array. The combined elements are designed for third order Chebyshev band pass filter with a pass band ripple of 0.1 dB and the integrated structure is more suitable for different S-band (2 GHz – 4 GHz) wireless applications. The equivalent circuit model for the proposed filtering antenna structure is analysed and the design procedure of the filter is also presented in detail. The 1x2 rectangular patch antenna array acts both as a radiating element and also as the last resonator of the band pass filter. The proposed filtering antenna structure results in high out-of-band rejection, enhanced bandwidth and a gain of about 209 MHz and 1.53 dB. The fabricated result agrees well with the simulation characteristics

Download Full-text

Fast Locking Time Biquadratic Band-Pass Filter Utilizing Nonlinear Sliding-Mode Controller

Journal of Circuits System and Computers ◽

10.1142/s0218126621501541 ◽

2020 ◽

pp. 2150154

Author(s):

Darko Mitić ◽

Goran Jovanović ◽

Mile Stojčev ◽

Dragan Antić

Keyword(s):

Input Signal ◽

Sliding Mode ◽

Design Procedure ◽

Signal Frequency ◽

Sliding Mode Controller ◽

Band Pass Filter ◽

Central Frequency ◽

Pass Filter ◽

Bicmos Technology ◽

Band Pass

This paper considers design procedure of fast locking time self-tuning [Formula: see text] biquadratic band-pass filter with nonlinear sliding mode control. A sliding mode controller is building block of the phase control loop (PCL) involved to push central frequency to reach input signal frequency very fast, approximately 100–200[Formula: see text]ns. The sliding mode controller is realized by using a tunable delay line, enabling optimal filter locking time for different input signal frequencies. The filter possesses low sensitivity to component discrepancy and is applied as a selective amplifier. The 0.13[Formula: see text][Formula: see text]m SiGe BiCMOS technology has been utilized for design and verification of the presented filter. This filter has central frequency up to 220[Formula: see text]MHz, quality factor [Formula: see text] and 25[Formula: see text]dB gain.

Download Full-text