Design of Configurable gm−C Biquadratic Filter

2016 ◽  
Vol 26 (03) ◽  
pp. 1750036 ◽  
Author(s):  
Mousumi Bhanja ◽  
Baidyanath Ray
Keyword(s):  
Harmonic Distortion ◽  
Monte Carlo Analysis ◽  
Second Order ◽  
Circuit Parameter ◽  
Third Order ◽  
Order Filter ◽  
Transconductance Amplifier ◽  
Output Noise ◽  
Biquadratic Filter ◽  
Multifunction Filter

Design methodology of a voltage-mode programmable biquadratic filter using minimum components is proposed in this paper. Multifunction second-order filter has been implemented using two first-order filter sections. The proposed biquadratic filter has been realized with operational transconductance amplifier (OTA). Cut-off frequency and [Formula: see text]-factor of the biquadratic are controlled by the transconductance of the OTAs. The proposed design technique keeps all the sensitivities to lower values. The biquadratic filter operates at high frequency. The proposed structure is transformed into a third-order multifunction filter by adding minimum component, a single capacitor. Design of higher order filter using the proposed second-order function also has been investigated. The proposed synthesis is validated with SPICE simulation in 0.13[Formula: see text][Formula: see text]m technology. Total harmonic distortion, output noise, corner simulations, Monte Carlo analysis due to the circuit parameter and process parameter variation have been studied.

scholarly journals Programmable Voltage-Mode Multifunction Filter Using Two Current Conveyors and One Operational Transconductance Amplifier

1996 ◽  
Vol 19 (3) ◽  
pp. 133-138 ◽  
Author(s):  
Muhammad Taher Abuelma'atti ◽  
Azhar Quddus
Keyword(s):  
Low Temperature ◽  
Active Filter ◽  
Current Conveyors ◽  
Operational Transconductance Amplifier ◽  
Voltage Mode ◽  
Transconductance Amplifier ◽  
Biquadratic Filter ◽  
Multifunction Filter ◽  
Single Input

A new voltage-mode active-filter with single input and three outputs is presented. The parameters of the proposed filter are programmable and the filter uses grounded capacitors. The proposed circuit can simultaneously realize lowpass, highpass, and bandpass biquadratic filter functions and enjoys low temperature sensitivities.

A New Tune-Dependent Multiple-Gated Transistor Linearization Technique

2019 ◽  
Vol 29 (07) ◽  
pp. 2050103
Author(s):  
Farzan Rezaei
Keyword(s):  
Supply Voltage ◽  
Harmonic Distortion ◽  
Input Voltage ◽  
Third Order ◽  
Linearization Technique ◽  
Text Input ◽  
Transconductance Amplifier ◽  
Wide Range ◽  
Low Pass ◽  
Differential Pair

In this paper, a new multiple-gated transistor (MGTR) linearization technique is presented. To simultaneously keep linearity and tuning capability of proposed operational transconductance amplifier (OTA), the auxiliary transistors which are employed for [Formula: see text] cancellation of differential pair (DP) stage are body-driven through a tune-dependent voltage. By this way, the third-order nonlinearity of DP is reduced for a wide range of transconductance values from 5.1 to 35.6[Formula: see text][Formula: see text]A/V. The OTA works with 1.2[Formula: see text]V supply voltage and its power consumption changes between 137.4 and 156[Formula: see text][Formula: see text]W at the entire tuning range. For [Formula: see text][Formula: see text][Formula: see text]A/V ([Formula: see text][Formula: see text]V) and for 0.6[Formula: see text][Formula: see text] input voltage, the simulation results show 6[Formula: see text]dB reduction in the total harmonic distortion (THD) of proposed OTA when the MGTR linearization technique is used and 15[Formula: see text]dB reduction when the tune-dependent body driving is also utilized. The proposed OTA is employed in a third-order low-pass Butterworth filter which is tunable from 2 to 18[Formula: see text]MHz. The in-band IIP3 of filter is 16.9 and 12.4[Formula: see text]dBm, respectively, for 2 and 18[Formula: see text]MHz cutoff frequencies while the two-tone input voltage is applied at 1[Formula: see text]MHz.

Current Mode and Voltage Mode Third Order Sinusoidal Oscillator Using CCDDCCTA

2020 ◽  
Vol 10 (4) ◽  
pp. 486-492
Author(s):  
Ajay K. Kushwaha ◽  
Ashok Kumar ◽  
Prakash Pareek
Keyword(s):  
Output Voltage ◽  
Current Mode ◽  
Monte Carlo Analysis ◽  
Bias Current ◽  
Current Conveyor ◽  
Output Current ◽  
Third Order ◽  
Transconductance Amplifier ◽  
Sinusoidal Oscillator ◽  
Circuit Configuration

Objective: In this paper, a novel third order sinusoidal oscillator based on current controlled differential difference current conveyor transconductance amplifier (CCDDCCTA) is proposed. Methods: The proposed circuit configuration consist of single CCDDCCTA, two grounded resistor and three capacitors. It can concurrently yield output voltage and current. The amplitude of output current can be easily tuned by the bias current. The non-ideality and Monte-Carlo analysis are discussed and presented. Results: The stated results agree well with the theoretical estimation. Conclusion: The performance ofa proposed oscillator are analyzed with ORCAD 16.6 simulator and the analog block has been depicted using 0.25 μm CMOS TSMC technology parameters.

Bulk Contributions Modulate the Sum-Frequency Generation Spectra of Interfacial Water on Model Sea-Spray Aerosols

2018 ◽  
Author(s):  
Sandeep K. Reddy ◽  
Raphael Thiraux ◽  
Bethany A. Wellen Rudd ◽  
Lu Lin ◽  
Tehseen Adel ◽  
...  
Keyword(s):  
Single Layer ◽  
Sum Frequency Generation ◽  
Second Order ◽  
Interfacial Structure ◽  
Sea Spray ◽  
Third Order ◽  
Systematic Analysis ◽  
Sum Frequency ◽  
Structure Of Water ◽  
Frequency Generation

Vibrational sum-frequency generation (vSFG) spectroscopy is used to determine the molecular structure of water at the interface of palmitic acid monolayers. Both measured and calculated spectra display speci c features due to third-order contributions to the vSFG response which are associated with nite interfacial electric potentials. We demonstrate that theoretical modeling enables to separate the third-order contributions, thus allowing for a systematic analysis of the strictly surface-sensitive, second-order component of the vSFG response. This study provides fundamental, molecular-level insights into the interfacial structure of water in a neutral surfactant system with relevance to single layer bio-membranes and environmentally relevant sea-spray aerosols. These results emphasize the key role that computer simulations can play in interpreting vSFG spectra and revealing microscopic details of water at complex interfaces, which can be difficult to extract from experiments due to the mixing of second-order, surface-sensitive and third-order, bulk-dependent contributions to the vSFG response.

Behavior Models of Voltage Differencing Inverting Buffered Amplifier and Applications in Circuit Analysis

2019 ◽  
Vol 12 (4) ◽  
pp. 298-303
Author(s):  
YongAn LI
Keyword(s):  
Large Scale ◽  
Vlsi Design ◽  
Circuit Analysis ◽  
Second Order ◽  
Very Large Scale Integration ◽  
Behavioral Models ◽  
Order Filter ◽  
Large Scale Integration ◽  
Scale Integration ◽  
Behavior Models

Background: The symbolic nodal analysis acts as a pivotal part of the very large scale integration (VLSI) design. Methods: In this work, based on the terminal relations for the pathological elements and the voltage differencing inverting buffered amplifier (VDIBA), twelve alternative pathological models for the VDIBA are presented. Moreover, the proposed models are applied to the VDIBA-based second-order filter and oscillator so as to simplify the circuit analysis. Results: The result shows that the behavioral models for the VDIBA are systematic, effective and powerful in the symbolic nodal circuit analysis.</P>

Evidence for general base catalysis by protic solvents in a kinetic study of alcoholyses and hydrolyses of 1-(phenoxycarbonyl)pyridinium ions under both solvolytic and non-solvolytic conditions

2009 ◽  
Vol 74 (1) ◽  
pp. 43-55 ◽  
Author(s):  
Dennis N. Kevill ◽  
Byoung-Chun Park ◽  
Jin Burm Kyong
Keyword(s):  
Second Order ◽  
Base Catalysis ◽  
Substitution Reactions ◽  
Third Order ◽  
Methoxy Derivative ◽  
First Order ◽  
General Base ◽  
Protic Solvents ◽  
Kinetics Of ◽  
Pyridinium Ions

The kinetics of nucleophilic substitution reactions of 1-(phenoxycarbonyl)pyridinium ions, prepared with the essentially non-nucleophilic/non-basic fluoroborate as the counterion, have been studied using up to 1.60 M methanol in acetonitrile as solvent and under solvolytic conditions in 2,2,2-trifluoroethan-1-ol (TFE) and its mixtures with water. Under the non- solvolytic conditions, the parent and three pyridine-ring-substituted derivatives were studied. Both second-order (first-order in methanol) and third-order (second-order in methanol) kinetic contributions were observed. In the solvolysis studies, since solvent ionizing power values were almost constant over the range of aqueous TFE studied, a Grunwald–Winstein equation treatment of the specific rates of solvolysis for the parent and the 4-methoxy derivative could be carried out in terms of variations in solvent nucleophilicity, and an appreciable sensitivity to changes in solvent nucleophilicity was found.

Second- and third-order harmonic distortion in DFB lasers

1995 ◽  
Vol 31 (11) ◽  
pp. 1974-1980 ◽  
Author(s):  
Liming Zhang ◽  
D.A. Ackerman
Keyword(s):  
Harmonic Distortion ◽  
Third Order

Panicle, spikelet, and floret development in orchardgrass (Dactylis glomerata)

1993 ◽  
Vol 71 (4) ◽  
pp. 523-532 ◽  
Author(s):  
Joanna Fraser ◽  
Eric G. Kokko
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Unique Feature ◽  
Dactylis Glomerata ◽  
Bilateral Symmetry ◽  
Second Order ◽  
Third Order ◽  
First Order ◽  
Lateral Branches ◽  
Scanning Electron

The initial stages of panicle, spikelet, and floret development in field-grown 'Kay' orchardgrass were examined using scanning electron microscopy. Spikelets arose from a complex multilevelled sequence of initiation from branch apices. Spikelets developed indirectly in a two-tiered progression: (i) an acropetal and basipetal sequence of first order, second-order, and third-order inflorescence apices, and (ii) an acropetal development within subclusters of higher-order lateral branch inflorescence apices. The panicle had the unique feature of dorsiventrality as well as bilateral symmetry. The basal apex from first-order, second-order, or third-order apices developed on the same side of the main axis as the first-order apex. The two glumes subtending each spikelet primordium developed alternately and acropetally. Development and initiation of florets within spikelets was basipetal within the panicle, basipetal within clusters and subclusters of spikelets on lateral branches, and acropetal within spikelets. Within florets, paleas developed later than lemmas. Key words: Dactylis glomerata, cocksfoot, scanning electron microscopy, development, panicle.

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