scholarly journals Current Conveyor All-Pass Sections: Brief Review and Novel Solution

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Sudhanshu Maheshwari
Keyword(s):  
Second Generation ◽  
Active Element ◽  
Current Conveyor ◽  
First Order

This study relates to the review of an important analog electronic function in form of all-pass filter’s realization using assorted current conveyor types and their relative performances, which resulted in a novel solution based on a new proposed active element. The study encompasses notable proposals during last the decade or more, and provides a platform for a broader future survey on the topic for enhancing the knowledge penetration amongst the researchers in the specified field. A new active element named EXCCII (Extra-X second generation current conveyor) with buffered output is found in the study along with its use in a new first-order all-pass section, with possible realization using commercially available IC (AD-844) and results.

Some Analog Filters of Reduced Complexity with Shelving and Multifunctional Characteristics

2018 ◽  
Vol 27 (10) ◽  
pp. 1850150 ◽  
Author(s):  
Sudhanshu Maheshwari
Keyword(s):  
Power Supply ◽  
Active Element ◽  
Current Conveyor ◽  
Analog Filters ◽  
First Order ◽  
Voltage Mode ◽  
Experimental Support ◽  
Reduced Complexity ◽  
Simulation Results ◽  
The One

This paper presents first-order voltage-mode filters using a single current conveyor with an additional X-stage, and passive elements. The new circuits have multifunction capability, and also realize low-shelf, high-shelf and band-shelf functions. The study is carried out on the effects of non-idealities, parasitic elements, and loading on the performance of proposed circuits. Active and passive sensitivities are also analyzed. The active element, extra-X current conveyor used for designing new circuits is simpler than most of the one active element and two passive elements’ based circuits. Detailed comparisons are carried out with relevant available works, and the new circuits are found to be more compact and exhibit higher frequency performances. The simulation results using 0.25[Formula: see text][Formula: see text]m CMOS parameters with [Formula: see text]1.25[Formula: see text]V power-supply are shown to verify the proposed circuits. The proposed circuits are also verified through simulations. Experimental support is given using AD-844 ICs to strengthen the validity of the proposed circuits.

ADDITIONAL HIGH-INPUT LOW-OUTPUT IMPEDANCE VOLTAGE-MODE ALL-PASS SECTIONS

2014 ◽  
Vol 23 (06) ◽  
pp. 1450077 ◽  
Author(s):  
JITENDRA MOHAN ◽  
SUDHANSHU MAHESHWARI
Keyword(s):  
Second Generation ◽  
Current Conveyor ◽  
Output Impedance ◽  
High Input ◽  
First Order ◽  
Voltage Mode ◽  
Fully Differential ◽  
Differential Voltage ◽  
Ideal Study ◽  
Simulation Results

To extend the existing knowledge on first-order voltage-mode all-pass filters, this paper presents two novel first-order voltage-mode all-pass sections, each employing single fully differential second-generation current conveyor (FDCCII) being used as the newly obtained fully differential voltage conveyor (FDVC), a resistor and a grounded capacitor. Both the proposed circuits possess high-input and low-output impedance feature, which makes the proposed circuits ideal for voltage-mode systems. Non-ideal study along with simulation results is given for validation.

High Input Impedances Voltage-mode First-order Filters with Grounded Capacitors using CCIIs

2020 ◽  
Vol 13 (1) ◽  
pp. 64-68
Author(s):  
Jiun-Wei Horng ◽  
Chun-Yang Tsai ◽  
Te-Chi Chen ◽  
Chang-Ming Wu
Keyword(s):  
Second Generation ◽  
Current Conveyor ◽  
Current Conveyors ◽  
High Input ◽  
First Order ◽  
Voltage Mode ◽  
The Third ◽  
Allpass Filters ◽  
Allpass Filter

Background: Three high input impedances voltage-mode first-order filters are presented. Methods: The first proposed circuit uses one multi-output second-generation current conveyor, two resistors and one grounded capacitor. The second proposed circuit uses two second-generation current conveyors, three resistors and one grounded capacitor. The third proposed circuit uses one multi-output second-generation current conveyor, one resistor and two grounded capacitors. Results: First-order lowpass and allpass filters can be simultaneously obtained in the first proposed circuit. First-order lowpass, highpass and allpass filters can be simultaneously obtained in the second proposed circuit. The third proposed circuit can realize first-order allpass filter. Conclusion: All the proposed circuits have the advantages of high input impedances and using only grounded capacitors.

scholarly journals Some New First-Order All-Pass Realizations Using CCII

2004 ◽  
Vol 27 (2) ◽  
pp. 91-94 ◽  
Author(s):  
Kirat Pal ◽  
Seema Rana
Keyword(s):  
Input Impedance ◽  
Second Generation ◽  
Current Conveyor ◽  
The Other ◽  
Passive Component ◽  
Current Conveyors ◽  
High Input ◽  
Active Components ◽  
High Input Impedance ◽  
First Order

Some new first-order all-pass filters using a second-generation current conveyor are reported. Two circuits have higher input impedance than reported very recently and use a grounded capacitor. Additionally two more circuits have been reported, one of which has minimum passive and active components and has the facility of single resistance tuning. The other circuit has high input impedance and uses two current conveyors but has one passive component less than the similar circuits reported earlier.

scholarly journals Single DD-DXCCII based quadrature oscillator with simultaneous current and voltage outputs

2016 ◽  
Vol 19 (2) ◽  
pp. 94 ◽  
Author(s):  
B. Chaturvedi ◽  
J. Mohan
Keyword(s):  
Sensitivity Analysis ◽  
Process Parameters ◽  
Second Generation ◽  
Active Element ◽  
Current Conveyor ◽  
Cmos Process ◽  
Quadrature Oscillator ◽  
Condition Of Oscillation ◽  
Simulation Results

In this paper, a versatile quadrature oscillator using single Differential Difference Second Generation Dual-X Current Conveyor (DD-DXCCII) as an active element, two grounded capacitors and three grounded resistors is presented. The proposed oscillator provides two current outputs and three voltage outputs in quadrature relationship simultaneously so named as versatile quadrature oscillator. The proposed versatile quadrature oscillator exhibits the feature of orthogonal control over the frequency of oscillation and condition of oscillation. Effects of non-idealities along with sensitivity analysis are also analyzed. The proposed circuit has low active and passive sensitivities. Parasitic study is further explored. The simulation results with 0.18μm CMOS process parameters using PSPICE are also given. Possible realization of proposed oscillator using AD-844 and LM13600 along with some simulation results are also given for completeness sake.

scholarly journals CMOS Realizable and Highly Cascadable Structures of First-Order All-Pass Filters

2021 ◽  
Vol 18 (14) ◽  
Author(s):  
Jitender Jitender ◽  
Jitendra MOHAN ◽  
Bhartendu CHATURVEDI
Keyword(s):  
Second Generation ◽  
Cmos Technology ◽  
Current Conveyor ◽  
Passive Component ◽  
Pass Filter ◽  
Quadrature Oscillator ◽  
First Order ◽  
Voltage Mode ◽  
Fully Differential ◽  
Low Sensitivity

Two novel resistorless structures of a first-order voltage-mode all-pass filter are presented in the paper. Both the structures employ a fully differential second-generation current conveyor (FDCCII) as the primary active element, in addition to an active resistor. A grounded capacitor is the only passive component used in both the structures. In both the structures, CMOS realization of FDCCII is utilized; hence, these structures are CMOS compatible. Some of the other highly demanded features possessed by the presented all-pass structures are: a simple circuit topology, electronic tunability, high input impedance, constraint-free operation in terms of passive component matching, and low sensitivity figures. The theoretical performances under ideal and non-ideal scenarios are presented in detail. Furthermore, the proposed idea is extended to an Nth-order voltage-mode all-pass filter and a quadrature oscillator to explore some of the possible applications. PSPICE simulation results verify the theoretical claims of the presented all-pass filters. HIGHLIGHTS Two novel resistorless structures of first-order all-pass filters based on fully differential second-generation current conveyor are presented Performance of the proposed structures are thoroughly described in ideal and non-ideal scenarios Theoretically described details of the proposed structures are verified by carrying simulations on PSPICE using 180 nm CMOS technology An Nth-order all-pass filter and a quadrature oscillator are also presented as applications GRAPHICAL ABSTRACT

scholarly journals Tunable First-Order Resistorless All-Pass Filter with Low Output Impedance

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Parveen Beg
Keyword(s):  
Building Block ◽  
Active Element ◽  
Higher Order ◽  
Current Conveyor ◽  
Passive Component ◽  
Output Impedance ◽  
Pass Filter ◽  
Mos Transistor ◽  
First Order ◽  
Voltage Mode

This paper presents a voltage mode cascadable single active element tunable first-order all-pass filter with a single passive component. The active element used to realise the filter is a new building block termed as differential difference dual-X current conveyor with a buffered output (DD-DXCCII). The filter is thus realized with the help of a DD-DXCCII, a capacitor, and a MOS transistor. By exploiting the low output impedance, a higher order filter is also realized. Nonideal and parasitic study is also carried out on the realised filters. The proposed DD-DXCCII filters are simulated using TSMC the 0.25 µm technology.

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