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

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.

scholarly journals Multifunction Filter/Inverse Filter Configuration Employing CMOS CDBAs

2019 ◽  
Vol 8 (4) ◽  
pp. 8844-8853
Keyword(s):  
Active Filters ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Low Pass Filter ◽  
High Pass Filter ◽  
Low Pass ◽  
Multifunction Filter ◽  
Band Pass ◽  
High Pass ◽  
Circuit Configuration

A voltage-mode (VM) multifunction configuration for the realization of conventional active filters and inverse active filters (IAF) using two current differencing buffered amplifiers and six passive elements has been presented. The proposed structure can realize low pass filter/inverse low pass filter (LPF/ILPF), high pass filter /inverse high pass filter (HPF/IHPF), and band pass filter/ Inverse band pass filter (BPF/IBPF) from the same circuit topology by appropriate choice(s) of the branch impedance(s). PSPICE simulations with CMOS current differencing buffered amplifiers implemented in 0.18µm CMOS TSMC technology have been presented to establish the workability of the proposed circuit configuration.

scholarly journals CMOS CDBA-Based Inverse Filter Structure

2020 ◽  
Vol 9 (3) ◽  
pp. 2226-2231
Keyword(s):  
Cmos Technology ◽  
Experimental Results ◽  
Band Pass Filter ◽  
Inverse Filter ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Filter Structure ◽  
Low Pass ◽  
Band Pass ◽  
High Pass

This paper presents a voltage-mode(VM) tunable multifunction inverse filter configuration employing current differencing buffered amplifiers (CDBA). The presented structure utilizes two CDBAs, two/three capacitors and four/five resistors to realize inverse low pass filter (ILPF), inverse high pass filter (IHPF), inverse band pass filter (IBPF), and inverse band reject filter(IBRF) from the same circuit topology by suitable selection(s) of the branch admittances(s). PSPICE simulations have been performed with 0.18µm TSMC CMOS technology to validate the theory. Some sample experimental results have also been provided using off-the-shelf IC AD844 based CDBA.

scholarly journals Simulasi Perancangan Filter Analog dengan Respon Chebyshev

2013 ◽  
Vol 1 (2) ◽  
pp. 106
Author(s):  
RUSTAMAJI RUSTAMAJI ◽  
ARSYAD RAMADHAN DARLIS ◽  
SOLIHIN SUPARMAN
Keyword(s):  
User Interface ◽  
Graphical User Interface ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Band Stop Filter ◽  
Low Pass ◽  
Band Pass ◽  
High Pass ◽  
Filter Response

ABSTRAKDalam suatu sistem komunikasi penggunaan rangkaian filter sangat penting. Salah satu cara untuk memudahkan dalam perancangan sebuah filter dilakukanlah teknik simulasi. Penelitian ini bertujuan untuk merancang simulasi yang menghasilkan respon filter jenis chebyshev serta menghasilkan nilai komponen induktor (L) dan kapasitor (C) yang dibutuhkan untuk merangkai filter. Simulasi yang dirancang pada penelitian ini menggunakan Graphical User Interface (GUI). Dari simulasi yang dilakukan, didapatkan respon Chebyshev pada low pass filter, high pass filter, band pass filter, dan band stop filter sudah sesuai dengan input yang dimasukkan ke dalam parameter program dan sesuai dengan teori respon filter Chebyshev. Hasil Simulasi dari rangkaian band pass filter dan band stop filter dengan menggunakan Electronic Workbench (EWB), menunjukkan respon dengan pergeseran frekuensi sebesar 0,1 kHz lebih tinggi dari frekuensi yang diharapkan.Kata Kunci: filter, Chebyshev, band, respon frekuensi. ABSTRACTOn communication system using filter is very important. One way to simplify the design of filter undertaken a simulation technique. This research aims to design a simulation that generates the filter response of chebyshev and generate the value component of the inductor (L) and capacitor (C) that needed for constructing the filter. This Simulation using Graphical User Interface (GUI). From result simulation, response in low pass filter, high pass filter, band pass filter, band stop filter and is in compliance with the input entered into the program and in accordance with the theory of Chebyshev filter response. The simulation of the band pass filter and bands stop filter by using electronic workbench ( EWB ), show a response with shifts frequency of 0.1 khz higher than frequency expected.Keywords: filter, Chebyshev, band, frequency respons

scholarly journals Reconfigurable Fractional-Order Filter with Electronically Controllable Slope of Attenuation, Pole Frequency and Type of Approximation

2017 ◽  
Vol 26 (10) ◽  
pp. 1750157 ◽  
Author(s):  
Jan Jerabek ◽  
Roman Sotner ◽  
Jan Dvorak ◽  
Josef Polak ◽  
David Kubanek ◽  
...  
Keyword(s):  
Fractional Order ◽  
Stop Band ◽  
Pass Band ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Operational Transconductance Amplifiers ◽  
Order Filter ◽  
Low Pass ◽  
Electronically Controllable ◽  
High Pass

This paper presents design of electronically reconfigurable fractional-order filter that is able to be configured to operate as fractional-order low-pass filter (FLPF) or fractional-order high-pass filter (FHPF). Its slope of attenuation between pass band and stop band, i.e., order of the filter, is electronically adjustable in the range between 1 and 2. Also, pole frequency can be electronically controlled independently with respect to other tuned parameters. Moreover, particular type of approximation can be also controlled electronically. This feature set is available both for FLPF and FHPF-type of response. Presented structure of the filter is based on well-known follow-the-leader feedback (FLF) topology adjusted in our case for utilization with just simple active elements operational transconductance amplifiers (OTAs) and adjustable current amplifiers (ACAs), both providing possibility to control its key parameter electronically. This paper explains how reconfigurable third-order FLF topology is used in order to approximate both FLPF and FHPF in concerned frequency band of interest. Design is supported by PSpice simulations for three particular values of order of the filter (1.25, 1.5, 1.75), for several values of pole frequency and for two particular types of approximation forming the shape of both the magnitude and phase response. Moreover, theoretical presumptions are successfully confirmed by laboratory measurements with prepared prototype based on behavioral modeling.

scholarly journals High-Performance RF Balanced Microstrip Mixer Configuration for Cryogenic and Room Temperatures

Electronics ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 102
Author(s):  
Noy Citron ◽  
Eldad Holdengreber ◽  
Oz Sorkin ◽  
Shmuel E. Schacham ◽  
Eliyahu Farber
Keyword(s):  
High Performance ◽  
Schottky Diodes ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Noise Rejection ◽  
Low Pass ◽  
Hybrid Coupler ◽  
Band Pass ◽  
Simulation Results

A high-performance S-band down-conversion microstrip mixer, for operation from 77 K to 300 K, is described. The balanced mixer combines a 90 degree hybrid coupler, two Schottky diodes, a band pass filter, and a low pass filter. The coupler phase shift drastically improves noise rejection. The circuit was implemented according to the configuration obtained from extensive simulation results based on electromagnetic analysis. The experimental results agreed well with the simulation results, showing a maximum measured insertion loss of 0.4 dB at 2 GHz. The microstrip mixer can be easily adjusted to different frequency ranges, up to about 50 GHz, through the proper choice of microstrip configuration. This novel S-band cryogenic mixer, implemented without resorting to special components, shows a very high performance at liquid nitrogen temperatures, making this mixer very suitable for high-temperature superconductive applications, such as front-ends.

scholarly journals Implementation of Low, High and Band Pass Filters using Verilog HDL

2019 ◽  
Vol 9 (2) ◽  
pp. 5178-5182
Keyword(s):  
Communication Networks ◽  
Detailed Knowledge ◽  
Band Pass Filter ◽  
Verilog Hdl ◽  
Pass Filter ◽  
Essential Components ◽  
Low Pass ◽  
Band Pass ◽  
High Pass ◽  
Descriptive Language

Filters are some of the highly essential components used for operating in most electronic based circuits. Filters are most important and widely used to block some portion of signals according to frequency. Having a detailed knowledge of various filters. A designer will be able to design an efficient communication networks, by varying the cut off frequencies. Filters are required in computer, mechanical and some other fields too. As days passed by the usage of active and passive filters has gradually increased in the market. There are various types of Filters available, in which we are going to perform the simulation of Low pass, High Pass and Band pass Filter using Verilog Hardware Descriptive Language and Xilinx ISE 13.1 as a simulation tool. This paper provides a detailed explanation, circuit diagram, advantages, disadvantages, applications, working of Verilog code and simulation result of Low pass, High pass and Band pass filter. Using Verilog Hardware Descriptive language its simpler to understand and execute the functionality of filters then using other tools like MATLAB, Microcontroller, Microprocessor.

Construction of a High-Pass Digital Filter from a Low-Pass Digital Filter

1994 ◽  
Vol 10 (4) ◽  
pp. 374-381 ◽  
Author(s):  
Stephen D. Murphy ◽  
D. Gordon E. Robertson
Keyword(s):  
Digital Filter ◽  
Low Frequency ◽  
Frequency Noise ◽  
Band Pass Filter ◽  
Low Frequency Noise ◽  
Pass Filter ◽  
Low Pass Filter ◽  
High Pass Filter ◽  
Low Pass ◽  
High Pass

To remove low-frequency noise from data such as DC-bias from electromyo-grams (EMGs) or drift from force transducers, a high-pass filter was constructed from a low-pass filter of known characteristics. A summary of the necessary steps required to transform the low-pass digital were developed. Contaminated EMG and force platform data were used to test the filter. The high-pass filter successfully removed the low-frequency noise from the EMG signals. The high-pass filter was then cascaded with the low-pass filter to produce a band-pass filter to enable simultaneous high- and low-frequency noise reduction.

scholarly journals Implementation of an Inductorless 5th Order Band-Pass Filter

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>

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